Hypotension. Medical search

Abnormally low BLOOD PRESSURE that can result in inadequate blood flow to the brain and other vital organs. Common symptom is DIZZINESS but greater negative impacts on the body occur when there is prolonged depravation of oxygen and nutrients.

Procedure in which arterial blood pressure is intentionally reduced in order to control blood loss during surgery. This procedure is performed either pharmacologically or by pre-surgical removal of blood.

A significant drop in BLOOD PRESSURE after assuming a standing position. Orthostatic hypotension is a finding, and defined as a 20-mm Hg decrease in systolic pressure or a 10-mm Hg decrease in diastolic pressure 3 minutes after the person has risen from supine to standing. Symptoms generally include DIZZINESS, blurred vision, and SYNCOPE.

Reduction of CEREBROSPINAL FLUID pressure characterized clinically by HEADACHE which is maximal in an upright posture and occasionally by an abducens nerve palsy (see ABDUCENS NERVE DISEASES), neck stiffness, hearing loss (see DEAFNESS); NAUSEA; and other symptoms. This condition may be spontaneous or secondary to SPINAL PUNCTURE; NEUROSURGICAL PROCEDURES; DEHYDRATION; UREMIA; trauma (see also CRANIOCEREBRAL TRAUMA); and other processes. Chronic hypotension may be associated with subdural hematomas (see HEMATOMA, SUBDURAL) or hygromas. (From Semin Neurol 1996 Mar;16(1):5-10; Adams et al., Principles of Neurology, 6th ed, pp637-8)

PRESSURE of the BLOOD on the ARTERIES and other BLOOD VESSELS.

Transient reduction in blood pressure levels immediately after exercises that lasts 2-12 hours. The reduction varies but is typically 5-20 mm Hg when compared to pre-exercise levels. It exists both in normotensive and hypertensive individuals and may play a role in excercise related PHYSIOLOGIC ADAPTATION.

A nicotinic antagonist that has been used as a ganglionic blocker in hypertension, as an adjunct to anesthesia, and to induce hypotension during surgery.

Cardiac arrhythmias that are characterized by excessively slow HEART RATE, usually below 50 beats per minute in human adults. They can be classified broadly into SINOATRIAL NODE dysfunction and ATRIOVENTRICULAR BLOCK.

The number of times the HEART VENTRICLES contract per unit of time, usually per minute.

A phenethylamine found in EPHEDRA SINICA. PSEUDOEPHEDRINE is an isomer. It is an alpha- and beta-adrenergic agonist that may also enhance release of norepinephrine. It has been used for asthma, heart failure, rhinitis, and urinary incontinence, and for its central nervous system stimulatory effects in the treatment of narcolepsy and depression. It has become less extensively used with the advent of more selective agonists.

Procedure in which an anesthetic is injected directly into the spinal cord.

A variety of anesthetic methods such as EPIDURAL ANESTHESIA used to control the pain of childbirth.

The movement and the forces involved in the movement of the blood through the CARDIOVASCULAR SYSTEM.

Diseases of the parasympathetic or sympathetic divisions of the AUTONOMIC NERVOUS SYSTEM; which has components located in the CENTRAL NERVOUS SYSTEM and PERIPHERAL NERVOUS SYSTEM. Autonomic dysfunction may be associated with HYPOTHALAMIC DISEASES; BRAIN STEM disorders; SPINAL CORD DISEASES; and PERIPHERAL NERVOUS SYSTEM DISEASES. Manifestations include impairments of vegetative functions including the maintenance of BLOOD PRESSURE; HEART RATE; pupil function; SWEATING; REPRODUCTIVE AND URINARY PHYSIOLOGY; and DIGESTION.

A pathological condition manifested by failure to perfuse or oxygenate vital organs.

A state characterized by loss of feeling or sensation. This depression of nerve function is usually the result of pharmacologic action and is induced to allow performance of surgery or other painful procedures.

Sepsis associated with HYPOTENSION or hypoperfusion despite adequate fluid resuscitation. Perfusion abnormalities may include, but are not limited to LACTIC ACIDOSIS; OLIGURIA; or acute alteration in mental status.

An ethanolamine derivative that is an adrenergic alpha-1 agonist. It is used as a vasoconstrictor agent in the treatment of HYPOTENSION.

The circulation of blood through the BLOOD VESSELS of the BRAIN.

The force that opposes the flow of BLOOD through a vascular bed. It is equal to the difference in BLOOD PRESSURE across the vascular bed divided by the CARDIAC OUTPUT.

A powerful vasodilator used in emergencies to lower blood pressure or to improve cardiac function. It is also an indicator for free sulfhydryl groups in proteins.

Abnormally low intraocular pressure often related to chronic inflammation (uveitis).

The volume of BLOOD passing through the HEART per unit of time. It is usually expressed as liters (volume) per minute so as not to be confused with STROKE VOLUME (volume per beat).

An abnormally low volume of blood circulating through the body. It may result in hypovolemic shock (see SHOCK).

Inorganic salts of the hypothetical acid, H3Fe(CN)6.

A transient loss of consciousness and postural tone caused by diminished blood flow to the brain (i.e., BRAIN ISCHEMIA). Presyncope refers to the sensation of lightheadedness and loss of strength that precedes a syncopal event or accompanies an incomplete syncope. (From Adams et al., Principles of Neurology, 6th ed, pp367-9)

A progressive neurodegenerative condition of the central and autonomic nervous systems characterized by atrophy of the preganglionic lateral horn neurons of the thoracic spinal cord. This disease is generally considered a clinical variant of MULTIPLE SYSTEM ATROPHY. Affected individuals present in the fifth or sixth decade with ORTHOSTASIS and bladder dysfunction; and later develop FECAL INCONTINENCE; anhidrosis; ATAXIA; IMPOTENCE; and alterations of tone suggestive of basal ganglia dysfunction. (From Adams et al., Principles of Neurology, 6th ed, p536)

A degenerative disease of the AUTONOMIC NERVOUS SYSTEM that is characterized by idiopathic ORTHOSTATIC HYPOTENSION and a greatly reduced level of CATECHOLAMINES. No other neurological deficits are present.

The injection of autologous blood into the epidural space either as a prophylactic treatment immediately following an epidural puncture or for treatment of headache as a result of an epidural puncture.

The position or attitude of the body.

Complications that affect patients during surgery. They may or may not be associated with the disease for which the surgery is done, or within the same surgical procedure.

Leakage and accumulation of CEREBROSPINAL FLUID in the subdural space which may be associated with an infectious process; CRANIOCEREBRAL TRAUMA; BRAIN NEOPLASMS; INTRACRANIAL HYPOTENSION; and other conditions.

A standard and widely accepted diagnostic test used to identify patients who have a vasodepressive and/or cardioinhibitory response as a cause of syncope. (From Braunwald, Heart Disease, 7th ed)

Pressure within the cranial cavity. It is influenced by brain mass, the circulatory system, CSF dynamics, and skull rigidity.

Drugs used to cause constriction of the blood vessels.

Acute hemorrhage or excessive fluid loss resulting in HYPOVOLEMIA.

The HEART and the BLOOD VESSELS by which BLOOD is pumped and circulated through the body.

Therapy whose basic objective is to restore the volume and composition of the body fluids to normal with respect to WATER-ELECTROLYTE BALANCE. Fluids may be administered intravenously, orally, by intermittent gavage, or by HYPODERMOCLYSIS.

Bleeding or escape of blood from a vessel.

The thoracolumbar division of the autonomic nervous system. Sympathetic preganglionic fibers originate in neurons of the intermediolateral column of the spinal cord and project to the paravertebral and prevertebral ganglia, which in turn project to target organs. The sympathetic nervous system mediates the body's response to stressful situations, i.e., the fight or flight reactions. It often acts reciprocally to the parasympathetic system.

The domestic dog, Canis familiaris, comprising about 400 breeds, of the carnivore family CANIDAE. They are worldwide in distribution and live in association with people. (Walker's Mammals of the World, 5th ed, p1065)

Volume of circulating BLOOD. It is the sum of the PLASMA VOLUME and ERYTHROCYTE VOLUME.

Extraction of the FETUS by means of abdominal HYSTEROTOMY.

An alpha-2 adrenergic agonist that has both central and peripheral nervous system effects. Its primary clinical use is as an antihypertensive agent.

Procedure in which an anesthetic is injected into the epidural space.

The ENTERIC NERVOUS SYSTEM; PARASYMPATHETIC NERVOUS SYSTEM; and SYMPATHETIC NERVOUS SYSTEM taken together. Generally speaking, the autonomic nervous system regulates the internal environment during both peaceful activity and physical or emotional stress. Autonomic activity is controlled and integrated by the CENTRAL NERVOUS SYSTEM, especially the HYPOTHALAMUS and the SOLITARY NUCLEUS, which receive information relayed from VISCERAL AFFERENTS.

The study of systems, particularly electronic systems, which function after the manner of, in a manner characteristic of, or resembling living systems. Also, the science of applying biological techniques and principles to the design of electronic systems.

Solutions having the same osmotic pressure as blood serum, or another solution with which they are compared. (From Grant & Hackh's Chemical Dictionary, 5th ed & Dorland, 28th ed)

Receptors in the vascular system, particularly the aorta and carotid sinus, which are sensitive to stretch of the vessel walls.

An alpha-1 adrenergic agonist used as a mydriatic, nasal decongestant, and cardiotonic agent.

Precursor of epinephrine that is secreted by the adrenal medulla and is a widespread central and autonomic neurotransmitter. Norepinephrine is the principal transmitter of most postganglionic sympathetic fibers and of the diffuse projection system in the brain arising from the locus ceruleus. It is also found in plants and is used pharmacologically as a sympathomimetic.

The flow of BLOOD through or around an organ or region of the body.

Elements of limited time intervals, contributing to particular results or situations.

A response by the BARORECEPTORS to increased BLOOD PRESSURE. Increased pressure stretches BLOOD VESSELS which activates the baroreceptors in the vessel walls. The net response of the CENTRAL NERVOUS SYSTEM is a reduction of central sympathetic outflow. This reduces blood pressure both by decreasing peripheral VASCULAR RESISTANCE and by lowering CARDIAC OUTPUT. Because the baroreceptors are tonically active, the baroreflex can compensate rapidly for both increases and decreases in blood pressure.

Drugs used in the treatment of acute or chronic vascular HYPERTENSION regardless of pharmacological mechanism. Among the antihypertensive agents are DIURETICS; (especially DIURETICS, THIAZIDE); ADRENERGIC BETA-ANTAGONISTS; ADRENERGIC ALPHA-ANTAGONISTS; ANGIOTENSIN-CONVERTING ENZYME INHIBITORS; CALCIUM CHANNEL BLOCKERS; GANGLIONIC BLOCKERS; and VASODILATOR AGENTS.

The circulation of blood through the BLOOD VESSELS supplying the abdominal VISCERA.

An imidazoline sympatholytic agent that stimulates ALPHA-2 ADRENERGIC RECEPTORS and central IMIDAZOLINE RECEPTORS. It is commonly used in the management of HYPERTENSION.

The physiological widening of BLOOD VESSELS by relaxing the underlying VASCULAR SMOOTH MUSCLE.

The porcine antidiuretic hormone (VASOPRESSINS). It is a cyclic nonapeptide that differs from ARG-VASOPRESSIN by one amino acid, containing a LYSINE at residue 8 instead of an ARGININE. Lys-vasopressin is used to treat DIABETES INSIPIDUS or to improve vasomotor tone and BLOOD PRESSURE.

The relationship between the dose of an administered drug and the response of the organism to the drug.

Any liquid used to replace blood plasma, usually a saline solution, often with serum albumins, dextrans or other preparations. These substances do not enhance the oxygen- carrying capacity of blood, but merely replace the volume. They are also used to treat dehydration.

Loss of consciousness due to a reduction in blood pressure that is associated with an increase in vagal tone and peripheral vasodilation.

The long-term (minutes to hours) administration of a fluid into the vein through venipuncture, either by letting the fluid flow by gravity or by pumping it.

A strain of albino rat used widely for experimental purposes because of its calmness and ease of handling. It was developed by the Sprague-Dawley Animal Company.

A synthetic mineralocorticoid with anti-inflammatory activity.

Forced expiratory effort against a closed GLOTTIS.

Therapy for the insufficient cleansing of the BLOOD by the kidneys based on dialysis and including hemodialysis, PERITONEAL DIALYSIS, and HEMODIAFILTRATION.

A direct-acting vasodilator that is used as an antihypertensive agent.

A stable, non-explosive inhalation anesthetic, relatively free from significant side effects.

Injections made into a vein for therapeutic or experimental purposes.

A widely used local anesthetic agent.

An involuntary movement or exercise of function in a part, excited in response to a stimulus applied to the periphery and transmitted to the brain or spinal cord.

The posture of an individual lying face up.

Observation of a population for a sufficient number of persons over a sufficient number of years to generate incidence or mortality rates subsequent to the selection of the study group.

Procedure in which patients are induced into an unconscious state through use of various medications so that they do not feel pain during surgery.

Persistently high systemic arterial BLOOD PRESSURE. Based on multiple readings (BLOOD PRESSURE DETERMINATION), hypertension is currently defined as when SYSTOLIC PRESSURE is consistently greater than 140 mm Hg or when DIASTOLIC PRESSURE is consistently 90 mm Hg or more.

Drugs used to cause dilation of the blood vessels.

A condition caused by the failure of body to dissipate heat in an excessively hot environment or during PHYSICAL EXERTION in a hot environment. Contrast to HEAT EXHAUSTION, the body temperature in heat stroke patient is dangerously high with red, hot skin accompanied by DELUSIONS; CONVULSIONS; or COMA. It can be a life-threatening emergency and is most common in infants and the elderly.

An acute hypersensitivity reaction due to exposure to a previously encountered ANTIGEN. The reaction may include rapidly progressing URTICARIA, respiratory distress, vascular collapse, systemic SHOCK, and death.

Abnormally rapid heartbeat, usually with a HEART RATE above 100 beats per minute for adults. Tachycardia accompanied by disturbance in the cardiac depolarization (cardiac arrhythmia) is called tachyarrhythmia.

The constant checking on the state or condition of a patient during the course of a surgical operation (e.g., checking of vital signs).

The restoration to life or consciousness of one apparently dead. (Dorland, 27th ed)

Method for determining the circulating blood volume by introducing a known quantity of foreign substance into the blood and determining its concentration some minutes later when thorough mixing has occurred. From these two values the blood volume can be calculated by dividing the quantity of injected material by its concentration in the blood at the time of uniform mixing. Generally expressed as cubic centimeters or liters per kilogram of body weight.

The blood pressure in the ARTERIES. It is commonly measured with a SPHYGMOMANOMETER on the upper arm which represents the arterial pressure in the BRACHIAL ARTERY.

Measurement of oxygen and carbon dioxide in the blood.

Evaluation undertaken to assess the results or consequences of management and procedures used in combating disease in order to determine the efficacy, effectiveness, safety, and practicability of these interventions in individual cases or series.

X-ray visualization of the spinal cord following injection of contrast medium into the spinal arachnoid space.

Volume of PLASMA in the circulation. It is usually measured by INDICATOR DILUTION TECHNIQUES.

A nonflammable, halogenated, hydrocarbon anesthetic that provides relatively rapid induction with little or no excitement. Analgesia may not be adequate. NITROUS OXIDE is often given concomitantly. Because halothane may not produce sufficient muscle relaxation, supplemental neuromuscular blocking agents may be required. (From AMA Drug Evaluations Annual, 1994, p178)

The combination of hemodialysis and hemofiltration either simultaneously or sequentially. Convective transport (hemofiltration) may be better for removal of larger molecular weight substances and diffusive transport (hemodialysis) for smaller molecular weight solutes.

The processes whereby the internal environment of an organism tends to remain balanced and stable.

The part of CENTRAL NERVOUS SYSTEM that is contained within the skull (CRANIUM). Arising from the NEURAL TUBE, the embryonic brain is comprised of three major parts including PROSENCEPHALON (the forebrain); MESENCEPHALON (the midbrain); and RHOMBENCEPHALON (the hindbrain). The developed brain consists of CEREBRUM; CEREBELLUM; and other structures in the BRAIN STEM.

The symptom of PAIN in the cranial region. It may be an isolated benign occurrence or manifestation of a wide variety of HEADACHE DISORDERS.

The blood pressure in the central large VEINS of the body. It is distinguished from peripheral venous pressure which occurs in an extremity.

Agents having as their major action the interruption of neural transmission at nicotinic receptors on postganglionic autonomic neurons. Because their actions are so broad, including blocking of sympathetic and parasympathetic systems, their therapeutic use has been largely supplanted by more specific drugs. They may still be used in the control of blood pressure in patients with acute dissecting aortic aneurysm and for the induction of hypotension in surgery.

A free radical gas produced endogenously by a variety of mammalian cells, synthesized from ARGININE by NITRIC OXIDE SYNTHASE. Nitric oxide is one of the ENDOTHELIUM-DEPENDENT RELAXING FACTORS released by the vascular endothelium and mediates VASODILATION. It also inhibits platelet aggregation, induces disaggregation of aggregated platelets, and inhibits platelet adhesion to the vascular endothelium. Nitric oxide activates cytosolic GUANYLATE CYCLASE and thus elevates intracellular levels of CYCLIC GMP.

An autosomal disorder of the peripheral and autonomic nervous systems limited to individuals of Ashkenazic Jewish descent. Clinical manifestations are present at birth and include diminished lacrimation, defective thermoregulation, orthostatic hypotension (HYPOTENSION, ORTHOSTATIC), fixed pupils, excessive SWEATING, loss of pain and temperature sensation, and absent reflexes. Pathologic features include reduced numbers of small diameter peripheral nerve fibers and autonomic ganglion neurons. (From Adams et al., Principles of Neurology, 6th ed, p1348; Nat Genet 1993;4(2):160-4)

Antidiuretic hormones released by the NEUROHYPOPHYSIS of all vertebrates (structure varies with species) to regulate water balance and OSMOLARITY. In general, vasopressin is a nonapeptide consisting of a six-amino-acid ring with a cysteine 1 to cysteine 6 disulfide bridge or an octapeptide containing a CYSTINE. All mammals have arginine vasopressin except the pig with a lysine at position 8. Vasopressin, a vasoconstrictor, acts on the KIDNEY COLLECTING DUCTS to increase water reabsorption, increase blood volume and blood pressure.

The active sympathomimetic hormone from the ADRENAL MEDULLA. It stimulates both the alpha- and beta- adrenergic systems, causes systemic VASOCONSTRICTION and gastrointestinal relaxation, stimulates the HEART, and dilates BRONCHI and cerebral vessels. It is used in ASTHMA and CARDIAC FAILURE and to delay absorption of local ANESTHETICS.

A potent narcotic analgesic, abuse of which leads to habituation or addiction. It is primarily a mu-opioid agonist. Fentanyl is also used as an adjunct to general anesthetics, and as an anesthetic for induction and maintenance. (From Martindale, The Extra Pharmacopoeia, 30th ed, p1078)

A strain of albino rat developed at the Wistar Institute that has spread widely at other institutions. This has markedly diluted the original strain.

Anesthesia caused by the breathing of anesthetic gases or vapors or by insufflating anesthetic gases or vapors into the respiratory tract.

Nitric oxide limits the eicosanoid-dependent bronchoconstriction and hypotension induced by endothelin-1 in the guinea-pig. (1/1770)

1. This study attempts to investigate if endogenous nitric oxide (NO) can modulate the eicosanoid-releasing properties of intravenously administered endothelin-1 (ET-1) in the pulmonary and circulatory systems in the guinea-pig. 2. The nitric oxide synthase blocker N(omega)-nitro-L-arginine methyl ester (L-NAME; 300 microM; 30 min infusion) potentiated, in an L-arginine sensitive fashion, the release of thromboxane A2 (TxA2) stimulated by ET-1, the selective ET(B) receptor agonist IRL 1620 (Suc-[Glu9,Ala11,15]-ET-1(8-21)) or bradykinin (BK) (5, 50 and 50 nM, respectively, 3 min infusion) in guinea-pig isolated and perfused lungs. 3. In anaesthetized and ventilated guinea-pigs intravenous injection of ET-1 (0.1-1.0 nmol kg(-1)), IRL 1620 (0.2-1.6 nmol kg(-1)), BK (1.0-10.0 nmol kg(-1)) or U 46619 (0.2-5.7 nmol kg(-1)) each induced dose-dependent increases in pulmonary insufflation pressure (PIP). Pretreatment with L-NAME (5 mg kg(-1)) did not change basal PIP, but increased, in L-arginine sensitive manner, the magnitude of the PIP increases (in both amplitude and duration) triggered by each of the peptides (at 0.25, 0.4 and 1.0 nmol kg(-1), respectively), without modifying bronchoconstriction caused by U 46619 (0.57 nmol kg(-1)). 4. The increases in PIP induced by ET-1, IRL 1620 (0.25 and 0.4 nmol kg(-1), respectively) or U 46619 (0.57 nmol kg(-1)) were accompanied by rapid and transient increases of mean arterial blood pressure (MAP). Pretreatment with L-NAME (5 mg kg(-1); i.v. raised basal MAP persistently and, under this condition, subsequent administration of ET-1 or IRL 1620, but not of U-46619, induced hypotensive responses which were prevented by pretreatment with the cyclo-oxygenase inhibitor indomethacin. 5. Thus, endogenous NO appears to modulate ET-1-induced bronchoconstriction and pressor effects in the guinea-pig by limiting the peptide's ability to induce, possibly via ET(B) receptors, the release of TxA2 in the lungs and of vasodilatory prostanoids in the systemic circulation. Furthermore, it would seem that these eicosanoid-dependent actions of ET-1 in the pulmonary system and on systemic arterial resistance in this species are physiologically dissociated. (+info)

The Janus-faced aspect of 'dry weight'. (2/1770)

BACKGROUND: The goal of haemodialysis treatment in end-stage renal disease (ESRD) patients is to correct the complications of the uraemic condition. Among the main complications are fluid overload and subsequent hypertension that are corrected by achievement of 'dry weight'. We report in this study the evolution of post-dialysis body-weight and blood pressure in patients who began their HD treatment in our unit. METHODS: We studied the monthly evolution of post-dialysis body-weight (expressed as a percentage of pre-dialysis body-weight at the first HD treatment) and predialysis mean arterial pressure (MAP) over 24 months in 61 patients (21 females, mean age 59.8 years; 20% diabetic), treated with cellulosic membranes for 8 h, 3 times a week. RESULTS: The post-dialysis body-weight decreased between the onset of HD and month 2 (M2) (-4.40+/-0.52%). Then it went up, reaching -1.56+/-0.96% at M6, +0.3+/-1.27% at M12, +1.27+/-1.38% at M18 and +1.64+/-1.33% at M24. The post-dialysis body-weight increased by 6% between M2 and M24. The mean arterial pressure (MAP) decreased from 111.3+/-2.5 mmHg at M0 to 94.4+/-1.7 at M6, and then remained stable after M6. Between M2 and M6 the post-dialysis body-weight increased, whereas the predialysis MAP continued to decline. The incidence of hypotension episodes was maximal during the first 4 months of HD treatment. CONCLUSIONS: After the second month of dialysis treatment, the simultaneous increase of post-dialysis body-weight and decrease of pre-dialysis MAP are related to the effects of two processes, i.e. increased weight as the result of anabolism induced by the HD treatment on the one hand and normalization of blood pressure by fluid removal on the other. Continuous clinical assessment of the patient is necessary to provide adequate prescription of post-dialysis body-weight. During the first months of HD treatment, the nephrologist, like Janus, is a double-faced gatekeeper: he must be willing to decrease post-dialysis weight to achieve 'dry weight' and to normalize blood pressure, but he must also be prepared to increase it to compensate for anabolism and to avoid episodes of hypotension. (+info)

Hypotension induced by exercise is associated with enhanced release of adenyl purines from aged rat artery. (3/1770)

To determine whether the antihypertensive effects of exercise are associated with release of ATP and its metabolites from arteries, we assayed blood pressure and the release of adenine nucleotides and nucleosides from the caudal arteries of exercised and sedentary aged hypercholesterolemic rats. Exercise on a treadmill for 12 wk significantly decreased the rise in systolic and diastolic blood pressure by 7.5 and 15.9%, respectively, with advanced age. The concentrations of oleic, linoleic, and linolenic acids in the caudal artery decreased significantly with exercise, demonstrating an association between exercise and the unsaturation index of caudal arterial fatty acids. The amounts of total adenyl purines released by the arterial segments from exercised rats, both spontaneously and in response to norepinephrine, were significantly greater by 80.0 and 60.7%, respectively, than those released by tissues from sedentary rats. These results suggest that exercise alters the membrane fatty acid composition in aged rats as well as the release of ATP from vascular endothelial cells and that these factors are associated with the regression of the rise in blood pressure normally observed with advanced age. (+info)

Mediation of humoral catecholamine secretion by the renin-angiotensin system in hypotensive rainbow trout (Oncorhynchus mykiss). (4/1770)

The individual contributions of, and potential interactions between, the renin-angiotensin system (RAS) and the humoral adrenergic stress response to blood pressure regulation were examined in rainbow trout. Intravenous injection of the smooth muscle relaxant, papaverine (10 mg/kg), elicited a transient decrease in dorsal aortic blood pressure (PDA) and systemic vascular resistance (RS), and significant increases in plasma angiotensin II (Ang II) and catecholamine concentrations. Blockade of alpha-adrenoceptors before papaverine treatment prevented PDA and RS recovery, had no effect on the increase in plasma catecholamines, and resulted in greater plasma Ang II concentrations. Administration of the angiotensin-converting enzyme inhibitor, lisinopril (10(-4) mol/kg), before papaverine treatment attenuated the increases in the plasma concentrations of Ang II, adrenaline, and noradrenaline by 90, 79, and 40%, respectively and also prevented PDA and RS recovery. By itself, lisinopril treatment caused a gradual and sustained decrease in PDA and RS, and reductions in basal plasma Ang II and adrenaline concentrations. Bolus injection of a catecholamine cocktail (4 nmol/kg noradrenaline plus 40 nmol/kg adrenaline) in the lisinopril+papaverine-treated trout, to supplement their circulating catecholamine concentrations and mimic those observed in fish treated only with papaverine, resulted in a temporary recovery in PDA and RS. These results indicate that the RAS and the acute humoral adrenergic response are both recruited during an acute hypotensive stress, and have important roles in the compensatory response to hypotension in rainbow trout. However, whereas the contribution of the RAS to PDA recovery is largely indirect and relies on an Ang II-mediated secretion of catecholamines, the contribution from the adrenergic system is direct and relies at least in part on plasma catecholamines. (+info)

Sudden death in hypertrophic cardiomyopathy: potential importance of altered autonomic control of vasculature. (5/1770)

Current evidence suggests that alterations in the autonomic function and abnormal vascular control play a significant role either as independent triggers themselves or as modifiers of ischaemia and tolerance to to arrhythmias. A combination of several factors--that is, arrhythmia, hypotension, altered autonomic function including vascular control, and ischaemia are therefore likely to act as triggers for sudden death. The relative contribution of each of these factors needs further detailed study. (+info)

Effects of isoflurane anesthesia on pulmonary vascular response to K+ ATP channel activation and circulatory hypotension in chronically instrumented dogs. (6/1770)

BACKGROUND: The objective of this study was to evaluate the effects of isoflurane anesthesia on the pulmonary vascular responses to exogenous adenosine triphosphate-sensitive potassium (K+ ATP) channel activation and circulatory hypotension compared with responses measured in the conscious state. In addition, the extent to which K+ ATP channel inhibition modulates the pulmonary vascular response to circulatory hypotension in conscious and isoflurane-anesthetized dogs was assessed. METHODS: Fifteen conditioned, male mongrel dogs were fitted with instruments for long-term monitoring to measure the left pulmonary vascular pressure-flow relation. The dose-response relation to the K+ ATP channel agonist, lemakalim, and the pulmonary vascular response to circulatory hypotension were assessed in conscious and isoflurane-anesthetized (approximately 1.2 minimum alveolar concentration) dogs. The effect of the selective K+ ATP channel antagonist, glibenclamide, on the pulmonary vascular response to hypotension was also assessed in conscious and isoflurane-anesthetized dogs. RESULTS: Isoflurane had no effect on the baseline pulmonary circulation, but it attenuated (P<0.05) the pulmonary vasodilator response to lemakalim. Reducing the mean systemic arterial pressure to approximately 50 mm Hg resulted in pulmonary vasoconstriction (P<0.05) in the conscious state, and this response was attenuated (P<0.05) during isoflurane. Glibenclamide had no effect on the baseline pulmonary circulation, but it potentiated (P<0.05) the pulmonary vasoconstrictor response to hypotension in conscious and isoflurane-anesthetized dogs. CONCLUSIONS: These results indicate that K+ ATP-mediated pulmonary vasodilation and the pulmonary vasoconstrictor response to hypotension are attenuated during isoflurane anesthesia. Endogenous K+ ATP channel activation modulates the pulmonary vasoconstrictor response to hypotension in the conscious state, and this effect is preserved during isoflurane anesthesia. (+info)

Spike generation from dorsal roots and cutaneous afferents by hypoxia or hypercapnia in the rat in vivo. (7/1770)

The present study aimed at investigating the responsiveness of different parts of the primary afferent neurones to a brief hypoxia, hypercapnia or ischaemia under in vivo conditions. Action potentials were recorded in separate groups of anaesthetized rats from (i) the peripheral end of the central stump of the cut L3, L4 or L5 dorsal root (dorsal root preparation); (ii) the central end of the peripheral stump of the cut saphenous nerve (saphenous-receptor preparation); (iii) the distal end of a segment of the saphenous nerve cut at both ends (axon preparation). In paralysed animals interruption of artificial ventilation for 20-60 s elicited or increased the frequency of action potentials in both the dorsal root and saphenous-receptor preparations. Activation of these preparations was also achieved by inspiration of gas mixtures containing 10-0% oxygen (mixed with nitrogen) or 20-50% carbon dioxide (mixed with oxygen) which elicited in the blood a decrease in PO2 or an increase in PCO2 with a fall in pH. Occlusion of the femoral artery for 3 min also caused spike generation in the saphenous-receptor preparations with little alteration in blood pressure. All these stimuli failed to evoke action potentials in the axon preparations. Systemic (300 mg kg-1 s.c.) or perineural (2%) capsaicin pretreatment failed to inhibit the effect of hypoxia, hypercapnia or ischaemia, indicating a significant contribution of capsaicin-insensitive neurones to the responses. It is concluded that central and peripheral terminals but not axons of primary afferent neurones are excited by a brief hypoxia or hypercapnia and the peripheral terminals by a short local ischaemia as well. Excitation of central terminals by hypoxia or hypercapnia revealed in this way an antidromic activation of dorsal roots in response to natural chemical stimuli. (+info)

Effects of phosphodiesterase inhibitors after coronary artery bypass grafting. (8/1770)

The aim of this study was to estimate the postoperative effects of phosphodiesterase (PDE) inhibitors (milrinone and olprinone) after coronary artery bypass grafting (CABG). To prevent hypotension caused by the PDE inhibitors, low dose of catecholamines were used concomitantly. A total of 34 elective CABG cases were tested. In 12 cases, 0.25 microg kg(-1) min(-1) of milrinone, 3 microg kg(-1) min(-1) of dobutamine (DOB) and dopamine (DOA) were used concomitantly (Group-M). In another 10 patients, 0.1 microg kg(-1) min(-1) of olprinone and the same doses of the catecholamines were infused (Group-O). As a control, the same doses of DOA and DOB only were administered in 12 patients (Group-C). When the pump flow of the cardiopulmonary bypass (CPB) decreased to half, these drugs were given in all groups. Hemodynamics were recorded before CPB, just after the operation, and 3, 6, 12, 24, 48 and 72 h after the operation. Both milrinone and olprinone increased the cardiac index and decreased systemic vascular resistance to almost the same degree. Olprinone decreased mean aortic and pulmonary artery pressures, and also significantly reduced the preload of both right and left heart compared with milrinone. Significant hypotension was not detected due to the concomitant usage of low-dose catecholamines. This concomitant usage of PDE inhibitors and catecholamines allowed easy weaning from CPB, demonstrating excellent hemodynamics after CABG. Good oxygen demand and supply balance were maintained in peripheral tissue. These results suggest that these new PDE inhibitors may be effective not only for weaning from CPB but also for post-cardiotomy cardiogenic shock. (+info)

Main article: Hypotension. Blood pressure that is too low is known as hypotension. This is a medical concern if it causes signs ... Orthostatic hypotension[edit]. Main article: Orthostatic hypotension. A large fall in blood pressure upon standing (persistent ... Sharma S, Bhattacharya PT (2018). Hypotension. StatPearls. StatPearls Publishing. PMID 29763136. Retrieved 2018-12-23.. ... Blood pressure that is too low is called hypotension, and pressure that is consistently high is hypertension. Both have many ...

https://en.wikipedia.org/wiki/Arterial_blood_pressure

Orthostatic hypotension[edit]. Main article: Orthostatic hypotension. Orthostatic hypotension is characterized by an unusually ... Many of them, however, are specific for a certain cause of orthostatic hypotension, e.g. maintaining a proper fluid intake in ... One short term condition is orthostatic hypotension, and long term conditions are sore feet, stiff legs and low back pain. ... There are medications to treat hypotension. In addition, there are many lifestyle advices. ...

https://en.wikipedia.org/wiki/Standing

Patient.info (February 2013). "Hypotension". Cite journal requires ,journal= (help) Kilic D, Sahin E, Gulcan O, Bolat B, Turkoz ... Similarly, octreotide can be used to treat refractory chronic hypotension. While successful treatment has been demonstrated in ...

https://en.wikipedia.org/wiki/Octreotide

20/10 mm Hg) is termed orthostatic hypotension (postural hypotension) and represents a failure of the body to compensate for ... Both hypertension and hypotension have many causes and may be of sudden onset or of long duration. Long-term hypertension is a ... Blood pressure that is too low is called hypotension, pressure that is consistently too high is called hypertension, and normal ... Long-term hypertension is more common than long-term hypotension. The risk of cardiovascular disease increases progressively ...

https://en.wikipedia.org/wiki/Blood_pressure

Hypotension. *Injection-site haematoma. *Injection-site ecchymosis (Caverject only). *Pain: *Back. *Pelvic ...

https://en.wikipedia.org/wiki/Alprostadil

"Postural hypotension". Tahami Monfared et al. 2019, p. 300. Tahami Monfared et al. 2019, p. 299. Mueller et al. 2017, pp. 393- ... Between 50 and 60% of individuals with DLB have orthostatic hypotension due to reduced blood flow, which can result in ... The severity of orthostatic hypotension also predicts a worse prognosis. Compared to AD, which is better studied, memory is ... Decreasing the dosage of dopaminergic or atypical antipsychotic drugs may be needed with orthostatic hypotension, and high ...

https://en.wikipedia.org/wiki/Dementia_with_Lewy_bodies

maintenance: title: To check the diastolic blood pressure of the patient;; mlmname: Hypotension;; arden: version 2.7;; version ... hypotension)" at stdout_dest; ;; resources: default: de ;; language: en 'msg' : "The normal range from 60 to 90"; ;; language: ... en.wikipedia.org/wiki/Hypotension;; knowledge: type: data_driven;; data: /* read the diastolic blood pressure */ diastolic_ ...

https://en.wikipedia.org/wiki/Arden_syntax

Here, however, increased CO cannot solve the structural problems causing renal artery hypotension, with the result that CO ... Larsen R, Kleinschmidt S (April 1995). "[Controlled hypotension]". Der Anaesthesist (in German). 44 (4): 291-308. doi:10.1007/ ...

https://en.wikipedia.org/wiki/Secondary_hypertension

However, significant hypotension may occur, if a patient sits up too quickly from the supine position or becomes oversedated, ... Severe hypotension. Nitrous oxide causes a decrease in blood pressure due to a reduction in sympathetic function. ...

https://en.wikipedia.org/wiki/Inhalation_sedation

Compression garment Hemostasis Hypovolemia Permissive hypotension Shock (circulatory) Mattox, Kenneth L. (January 2003). " ... "Permissive Hypotension". 8:1. trauma.org. Cite journal requires ,journal= (help) Bledsoe, Bryan (November 30, 2003). "EMS Myth ...

https://en.wikipedia.org/wiki/Military_anti-shock_trousers

"Permissive Hypotension". Trauma.Org. 1997-08-31. Archived from the original on 2013-11-27. Retrieved 2015-11-01. Kennamer M, ... These include oliguria, cyanosis, abdominal and chest pain, hypotension, tachycardia, cold hands and feet, and progressively ... Current best practice allow permissive hypotension in patients suffering from hypovolemic shock, both avoid overly diluting ...

https://en.wikipedia.org/wiki/Hypovolemia

... essential hypotension; first functional class of stable angina strain of heart ischemic disease; miocardiodistrophies of ...

https://en.wikipedia.org/wiki/Kojori

Severe hypotension. Persons with cardiac conditions including hypotension, mechanical heart failure (valvular, pulmonary ... Ramirez, J (5 November 2013). "Severe hypotension associated with α blocker tamsulosin". BMJ (Clinical Research Ed.). 347: ... "Tamsulosin treatment for benign prostatic hyperplasia and risk of severe hypotension in men aged 40-85 years in the United ...

https://en.wikipedia.org/wiki/Tamsulosin

Hepatotoxicity; hypersensitivity reactions (rare), including Stevens-Johnson syndrome; hypotension (rare; IV). Phenacetin. No ... Sedation, anticholinergic effects, weight gain, orthostatic hypotension, sinus tachycardia, sexual dysfunction, tremor, ... hypotension, special difficulties, emotional lability, tremors, flushing, etc. ...

https://en.wikipedia.org/wiki/Algesic

Orthostatic hypotension. *Peripheral coldness. Rare (,0.1% incidence) adverse effects include:. *Hyponatraemia (low blood ...

https://en.wikipedia.org/wiki/Desvenlafaxine

More serious orthostatic hypotension is often the result of certain commonly prescribed medications such as diuretics, β- ... Hypoadrenergic orthostatic hypotension occurs when the person is unable to sustain a normal sympathetic response to blood ... Closely related to other causes of syncope related to hypotension (low blood pressure) such as orthostatic syncope. Some ... However, the resulting "transient orthostatic hypotension" does not necessarily signal any serious underlying disease. It is as ...

https://en.wikipedia.org/wiki/Syncope_(medicine)

Orthostatic hypotension treatment. Some people use caffeine-containing beverages such as coffee or tea to try to treat their ... Gupta V, Lipsitz LA (October 2007). "Orthostatic hypotension in the elderly: diagnosis and treatment". The American Journal of ... and treatment of neurogenic orthostatic hypotension and associated supine hypertension". J. Neurol. 264 (8): 1567-1582. doi: ...

https://en.wikipedia.org/wiki/Caffeine

Symptoms have been edema of the face and tongue, or larynx; shortness of breath; wheezing; chest pain; hypotension (including ...

https://en.wikipedia.org/wiki/Oprelvekin

Instantaneous hypotension due to sudden, massive vasodilation and decrease in blood saturation Warm, flushed skin due to ... "Hypotension & Shock Treatment , health.am". Holtz, Anders; Levi, Richard (6 July 2010). Spinal Cord Injury. Oxford University ...

https://en.wikipedia.org/wiki/Neurogenic_shock

Rook AF, Dawson DJ (1938). "Hypotension and flying". Lancet. 232 (2): 1503-10. doi:10.1016/s0140-6736(00)83970-7. Wood, EH (Jul ...

https://en.wikipedia.org/wiki/G-suit

Postural hypotension, arrhythmias. Itching, rash, pruritus. Suicidal behavior and ideation have been observed as early as one ...

https://en.wikipedia.org/wiki/Lacosamide

hypotension (transiently), by release of histamine[9]. No longer manufactured secondary to marketing, manufacturing, and ... hypotension, transiently,[9] by release of histamine. *Toxic metabolite called laudanosine, greater accumulation in individuals ... hypotension, transiently,[9] by release of histamine. *Harmful metabolite called laudanosine (lowering seizure threshold); ... It has a slow onset (,5 min) and a long duration of action (30 mins). Side-effects include hypotension, which is partially ...

https://en.wikipedia.org/wiki/Neuromuscular-blocking_drug

Orthostatic hypotension, also called postural hypotension, is a common form of low blood pressure. It occurs after a change in ... The treatment for hypotension depends on its cause. Chronic hypotension rarely exists as more than a symptom. Asymptomatic ... Chronic use of alpha blockers or beta blockers can lead to hypotension. Beta blockers can cause hypotension both by slowing the ... "Low blood pressure (hypotension)". BUPA.co.uk.. *^ Rodriguez, D; Silva, V; Prestes, J; Rica, RL; Serra, AJ; Bocalini, DS; ...

https://en.m.wikipedia.org/wiki/Low_blood_pressure

These include ischemia (insufficient blood flow); cerebral hypoxia (insufficient oxygen in the brain); hypotension (low blood ...

https://en.wikipedia.org/wiki/Primary_and_secondary_brain_injury

Hypotension or orthostatic hypotension. Bradycardia or tachycardia. Depression, anxiety disorders and insomnia. Solitude: may ... Hypotension (low blood pressure) is common, and symptoms include fatigue and weakness. Orthostatic hypotension, a marked ... Hypotension and orthostasis generally resolve upon recovery to a normal weight. The weight loss in anorexia nervosa also causes ...

https://en.wikipedia.org/wiki/Anorexia_nervosa

... inducing hypotension within glaucomas; reducing involuntary movements for patients affected by Tourette syndrome. The state-run ...

https://en.wikipedia.org/wiki/Cannabis_in_Italy

Infrequent ADRs include hypotension. Rare ADRs include: headache, tiredness, dizziness, confusion, diarrhea, constipation, and ...

https://en.wikipedia.org/wiki/H2_antagonist

Patients who need alpha blockers for BPH, but have a history of hypotension or postural heart failure, should use these drugs ... Ultimately, this gives rise to orthostatic hypotension, dizziness, and a sudden loss of consciousness due to the drastic drop ... Again, these interactions can cause dangerous hypotension. Furthermore, in rare cases, drug interactions can cause irregular, ... orthostatic hypotension, or heart palpitations via alterations of the QT interval. Alpha blockers that may have these side ...

https://en.wikipedia.org/wiki/Alpha_blocker

It is the drug of choice for people in traumatic shock who are at risk of hypotension. Low blood pressure is harmful in people ... Nickson C (7 August 2013). "Intubation, Hypotension and Shock". Life in the Fastlane (blog). Critical Care Compendium. Archived ... Hemmingsen C, Nielsen JE (November 1991). "Intravenous ketamine for prevention of severe hypotension during spinal anaesthesia ... "Hypotension, hypoxia, and head injury: frequency, duration, and consequences". Archives of Surgery. 136 (10): 1118-23. doi: ...

https://en.wikipedia.org/wiki/Ketamine

hypotension with blood pressure , 5th percentile for age or systolic blood pressure , 2 standard deviations below normal for ... Severe sepsis is defined as sepsis with sepsis-induced organ dysfunction or tissue hypoperfusion (manifesting as hypotension, ...

https://en.wikipedia.org/wiki/Sepsis

"Orthostatic Hypotension". Merck Manual.. *^ Idiopathic Orthostatic Hypotension and other Autonomic Failure Syndromes at ... "Orthostatic hypotension" at Dorlands Medical Dictionary *^ "Orthostatic Hypotension Information Page , National Institute of ... Orthostatic hypotension, also known as postural hypotension,[2] is a medical condition wherein a persons blood pressure falls ... Orthostatic hypotension (or postural hypotension) is a drop in blood pressure upon standing. One definition (AAFP) calls for a ...

https://en.wikipedia.org/wiki/Postural_hypotension

Postural hypotension. BMJ 2011; 342 doi: https://doi.org/10.1136/bmj.d3128 (Published 16 June 2011) Cite this as: BMJ 2011;342: ...

https://www.bmj.com/content/342/bmj.d3128/submit-a-rapid-response

Definition Orthostatic hypotension [2] refers to a reduction of blood pressure [3] (systolic blood pressure [4] that occurs ... Orthostatic Hypotension. Definition. Orthostatic hypotension is an abnormal decrease in blood pressure when a person stands up ... Orthostatic hypotension. Definition. Orthostatic hypotension refers to a reduction of blood pressure (systolic blood pressure ... "Orthostatic Hypotension." Clinics in Geriatric Medicine 18:2: (May 2002).. Viramo, Petteri. "Orthostatic Hypotension and ...

https://www.encyclopedia.com/medicine/diseases-and-conditions/pathology/orthostatic-hypotension

Orthostatic hypotension is a drop in blood pressure that occurs when moving from a laying down (supine) position to a standing ... Orthostatic hypotension has two forms that result from two main causes.. The neurogenic form is caused by problems with the ... Orthostatic hypotension is a drop in blood pressure that occurs when moving from a laying down (supine) position to a standing ... Orthostatic Hypotension: JACC State-of-the-Art Review. J Am Coll Cardiol. 2018 Sep 11;72(11):1294-1309. doi: 10.1016/j.jacc. ...

https://medlineplus.gov/genetics/condition/orthostatic-hypotension/

Definition of hypotension. The mechanisms involved in the regulation of blood pressure are divided into two broad categories ... On the other hand, if the hypotension is associated with some underlying disease process (e.g. severe blood loss), it is ... When hypotension is associated with significant symptoms, reduced perfusion to an organ, or some underlying disease process, ... Still, when systolic pressure is less than 80 mmHg and diastolic pressure less than 50 mmHg, a diagnosis of hypotension can be ...

https://www.news-medical.net/health/What-is-Hypotension.aspx

hypotension as such.However Scots Broom has a well known effect of raising blood pressure because of a mild peripheral vaso- ... Alternative YouCardiovascular SystemConditionsEndocrineGeneralHeart HealthHerbHerbal MedicineHigh Blood PressureHypotension ...

https://healthy.net/2000/12/06/hypotension/

Hypotension in Meprobamate Intoxication. Br Med J 1960; 2 doi: https://doi.org/10.1136/bmj.2.5195.387-b (Published 30 July 1960 ...

http://www.bmj.com/content/2/5195/387.3

Find out about the drop in blood pressure that causes orthostatic hypotension, including how and why it occurs. Learn the ... Orthostatic hypotension, also called postural hypotension, is defined as a sudden drop in blood pressure caused by a change in ... Low blood pressure is a symptom of orthostatic hypotension.. Hypotension, or low blood pressure, occurs when the blood pressure ... Orthostatic hypotension is common among people who are 65 or older because the bodys ability to react to drops in blood ...

https://www.medicalnewstoday.com/articles/318158

Your blood pressure is the force of your blood against the walls of your arteries as your heart pumps. Every time your heart beats (this is the heart contracting), it pumps blood into the arteries. Your blood pressure is highest when your heart beats and lowest when the heart rests between beats. Blood pressure readings use two numbers, read one over the other. The top number (systolic pressure) measures blood pressure when the heart beats. The bottom number (diastolic pressure) measures blood pressure in between heartbeats. A normal blood pressure reading is 120/80 or slightly lower. If you have a blood pressure reading of 90/60 or lower, youre usually considered to have low blood pressure (also known as hypotension).. Symptoms of low blood pressure include:. ...

https://www.breastcancer.org/treatment/side_effects/low_blood_press

A day after the FDA said it was ready to withdraw approval of the orthostatic hypotension drug midodrine, the drugs maker said ... A day after the FDA said it was ready to withdraw approval of the orthostatic hypotension drug midodrine, the drugs maker said ...

https://www.medpagetoday.com/productalert/prescriptions/21732

Midodrine is used fairly frequently in pts with hypotension. However, it is to be used only with pts who even when not on ... Just a reminder that even if they are asymptomatic, hypotension can cause other issues such as poor perfusion of organs and, if ...

http://allnurses.com/dialysis-renal-urology/hypotension-776833.html

... hypotension)? Explore low blood pressure causes, symptoms, and signs. Discover what is considered low blood pressure. ... home/high blood pressure center/ high blood pressure a-z list/slideshows a-z list , low blood pressure hypotension pictures ... Low Blood Pressure (Hypotension): Symptoms, Signs, Causes. *Reviewed By: Robert J. Bryg, MD ...

https://www.medicinenet.com/low_blood_pressure_hypotension_pictures_slideshow/article.htm?ecd=mnl_spc_021920

What is orthostatic hypotension? It is a type of low blood pressure in which a person becomes dizzy, lightheaded, or faints ... home/heart health center/heart a-z list/orthostatic hypotension center /orthostatic hypotension article ... Orthostatic Hypotension - Treatment What kinds of treatment, therapy, or medication did you receive for orthostatic hypotension ... Orthostatic Hypotension (Low Blood Pressure When Standing). *Orthostatic hypotension definition and facts ...

https://www.medicinenet.com/orthostatic_hypotension/article.htm

Hypoglycemia and hypotension are actually more closely aligned with underactive adrenals than underactive thyroid. Untreated ...

https://www.mothering.com/threads/hypothyroid-hypoglycemia-hypotension.419743/

Ask questions and get answers about Hypotension. Our support group helps people share their own experience. 25 questions, 29 ... Join the Hypotension group to help and get support from people like you. ... Our support group for Hypotension has 25 questions and 29 members. Updated 25 Apr 2019. ...

https://www.drugs.com/answers/support-group/hypotension/

Orthostatic hypotension, also called postural hypotension, is a common form of low blood pressure. It occurs after a change in ... Chronic use of alpha blockers or beta blockers can lead to hypotension. Beta blockers can cause hypotension both by slowing the ... Even small alterations in these networks can lead to hypotension. The diagnosis of hypotension is made by first obtaining a ... Some medications can also lead to hypotension. There are also syndromes that can cause hypotension in patients including ...

https://en.wikipedia.org/wiki/Hypotension

Create healthcare diagrams like this example called Orthostatic Hypotension - 1 in minutes with SmartDraw. SmartDraw includes ... Orthostatic Hypotension - 1. Create healthcare diagrams like this example called Orthostatic Hypotension - 1 in minutes with ... Orthostatic Hypotension. Health care professional measuring blood pressure of male patient in standing position, using wall ...

https://www.smartdraw.com/cardiac-tests-and-procedures/examples/orthostatic-hypotension-1/

now i am not saying i have POTS or hypotension or synascope or or or all the rest of these postural or what ever things. but it ... Yes....the Orthostatic Hypotension...breathless...skipped beats....ready to drop. So there is a name for this condition? PCS? I ... funny enough the exact words i had used over the two years like ear distortion and skipped beats are symtoms of hypotension ... i have read many articles stating that extreeme varicose veins cause hypotension (low blood pressure).-- and inturn our hearts ...

https://www.dailystrength.org/group/pelvic-congestion-syndrome/discussion/hypotension-amp-varicosities

hypotension synonyms, hypotension pronunciation, hypotension translation, English dictionary definition of hypotension. n. 1. ... Related to hypotension: orthostatic hypotension. hy·po·ten·sion. (hī′pə-tĕn′shən). n.. 1. Abnormally low arterial blood ... orthostatic hypotension, postural hypotension - low blood pressure occurring in some people when they stand up ... Hypotension - definition of hypotension by The Free Dictionary https://www.thefreedictionary.com/hypotension ...

http://www.thefreedictionary.com/hypotension

Controlled hypotension definition at Dictionary.com, a free online dictionary with pronunciation, synonyms and translation. ...

http://www.dictionary.com/browse/controlled-hypotension

For your hypotension there are treatments Do you see a cardiologist too? If you have someone wiith a phone that could catcch an ...

https://medhelp.org/posts/Ataxia/Orthostatic-hypotension-or-ataxia/show/2363150

Orthostatic hypotension (or postural hypotension) is a drop in blood pressure upon standing. One definition (AAFP) calls for a ... Orthostatic hypotension, also known as postural hypotension, is a medical condition wherein a persons blood pressure drops ... Alcohol can potentiate orthostatic hypotension to the point of syncope. Orthostatic hypotension can also be a side effect of ... The drop in blood pressure may be sudden (vasovagal orthostatic hypotension), within 3 minutes (classic orthostatic hypotension ...

https://en.wikipedia.org/wiki/Orthostatic_hypotension

Forms of hypotension. Orthostatic hypotension, also called "postural hypotension," is a common form of low blood pressure. It ... Low blood pressure (Hypotension) MedicineNet.com. Retrieved September 19, 2008.. *Turkington, C. A. 2004. Hypotension. Pages ... The treatment for hypotension depends on its cause. Asymptomatic hypotension in healthy people usually does not require ... Arrhythmias often result in hypotension by this mechanism. Beta blockers can cause hypotension both by slowing the heart rate ...

http://www.newworldencyclopedia.org/entry/Hypotension

Re: Hypotension and exercise?. Hi USMiss,. I have orthostatic hypotension also. I found that I had to modify the intense ... Re: Hypotension and exercise?. [QUOTE=DrJuliaco;5123055]Don t be afraid to be active. Regular physical activity is the first ... Hypotension and exercise?. I have low blood pressure that typically runs anywhere from 90-110 over 50-65. I also have ... Re: Hypotension and exercise?. [QUOTE=USmiss;5120489]I have low blood pressure that typically runs anywhere from 90-110 over 50 ...

https://www.healthboards.com/boards/high-low-blood-pressure/936101-hypotension-exercise-print.html

UroToday - GU OncToday brings coverage of the clinically relevant content needed to stay at the forefront of the dynamic field of GU oncology and urology.

https://www.urotoday.com/tags/hypotension.html

... , Postural Hypotension, Orthostatic Blood Pressure, Orthostasis, Orthostatic Syncope, Postural Blood ... Hypotension, Postural, HYPOTENSION ORTHOSTATIC, HYPOTENSION POSTURAL, Orthostatic hypo-tension, Hypotension, Orthostatic, ... hypotension, postural; hypotension, Hypotension, orthostatic, postural hypotension. French. HYPOTENSION ORTHOSTATIQUE, ... HYPOTENSION, ORTHOSTATIC, Postural Hypotension, Hypotension, postural, Hypotension, Orthostatic [Disease/Finding], hypotension ...

https://fpnotebook.com/cv/Exam/OrthstcHyptnsn.htm

https://en.m.wikipedia.org/wiki/Low_blood_pressure

Salt intake and hypotension. A low salt diet intake can be the main factor that produces hypotension. Sodium is necessary for ... DIET FOR HYPOTENSION. Nutrition plays a fundamental role in controlling hypotension by helping to prevent the causes and ... Vitamin deficiency and hypotension. Lack of vitamins, especially vitamin C, Vitamin B and vitamin E shortness can be ... Water intake and hypotension. Drinking much water increases blood volume which raises blood pressure. Although your body will ...

https://www.botanical-online.com/hypotensiondiet.htm

Find the best doctors for treating Hypotension in Marion. Compare doctors, read patient reviews and more. Book an appointment ... There are 57 doctors for Hypotension in Marion. Find the best for you:. *. ...

https://www.healthgrades.com/find-a-doctor/ohio/best-doctors-for-hypotension-

Orthostatic hypotension , also known as postural hypotension , [2] is a medical condition wherein a person's blood pressure falls when standing or sitting. (wikipedia.org)
It is important that the clinician take numerous blood pressure measurements on different occasions, since blood pressure can vary (i.e. postural hypotension, another disorder causing hypotension, is often worse in the morning when rising from bed). (encyclopedia.com)
Orthostatic hypotension, also called postural hypotension, is defined as a sudden drop in blood pressure caused by a change in posture, such as when a person stands up quickly. (medicalnewstoday.com)
Orthostatic hypotension, also called postural hypotension, is a common form of low blood pressure. (wikipedia.org)
http://en.wikipedia.org/wiki/Postural_orthostatic_tachycardia_syndrome it mentions shaking/tremor. (dailystrength.org)
POTS is also discussed separately (See 'Treatment of orthostatic and postprandial hypotension' and 'Postural tachycardia syndrome' . (uptodate.com)
Ghrist, D. G.: Postural hypotension. (springer.com)
Also searched for Standing , Low blood pressure , and Postural Hypotension . (clinicaltrials.gov)
postural hypotension") the most normal type of hypotension. (botanical-online.com)
Postural hypotension and orthostatic hypotension mean the same thing. (craighospital.org)
Postural hypotension happens more often when you are first injured, tired or after an illness. (craighospital.org)
Postural hypotension usually happens when you go from lying down to being upright, such as when you transfer into your wheelchair or the standing frame. (craighospital.org)
If postural hypotension occurs while you are in a wheelchair, you can be tilted backwards until your head and neck are nearly horizontal to the floor. (craighospital.org)
Talk to your doctor right away if you have any of the symptoms of postural hypotension or low pressure. (craighospital.org)
Orthostatic hypotension (also known as postural hypotension , [ 1 ] , orthostasis, and, colloquially, as head rush or a dizzy spell and to some people "the elevator effect") is a form of hypotension in which a person's blood pressure suddenly falls when the person stands up. (thefullwiki.org)
Orthostatic hypotension (postural hypotension) is common in individuals with SCI. (icord.org)
It also occurs in people with anemia ,pregnancy in females and venous varicosities .Certain circulating endogenous vasodilators which causes hyperbardykinism and mastocytosis may also cause postural hypotension. (wikidoc.org)
Nitrates have shown to cause side effects of postural hypotension. (wikidoc.org)
Some laypeople may also know this as postural hypotension. (ihealthdirectory.com)
There is a simple test that can be performed by physicians to rule out postural hypotension. (ihealthdirectory.com)
Postural hypotension may be a presenting feature in certain autonomic disorders (such as pure autonomic failure), it may be a pointer towards an alternative diagnosis (as in multiple system atrophy presenting with parkinsonian features), and it may complicate drug therapy (as with levodopa). (bmj.com)
Postural hypotension is associated with increased morbidity and also mortality, especially in elderly people, in whom falls result in injuries. (bmj.com)
Advances have resulted in a better understanding of the pathophysiological processes, and in the treatment of postural hypotension. (bmj.com)
Postural hypotension usually is considered when there are characteristic features resulting from cerebral ischaemia such as loss of consciousness (fainting, syncope). (bmj.com)
There are various disorders, including the chronic fatigue syndrome and the postural tachycardia syndrome, in which postural intolerance may not be accompanied by hypotension. (bmj.com)
Additional factors may be needed to unmask postural hypotension (table 2 ), especially in mild to moderate autonomic failure. (bmj.com)
Non-neurogenic causes of postural hypotension which include intravascular volume depletion (blood or fluid loss and Addison's disease), vasodilatation (drugs such as levodopa or glyceryl trinitrate), and cardiac impairment, 3 should be considered. (bmj.com)
Outline classification and examples of disorders in which postural hypotension results from neurogenic failure. (bmj.com)
The history may provide information on factors that worsen postural hypotension and its symptoms (table 2 ). (bmj.com)
Postural hypotension is the most common type of low blood pressure. (thefreedictionary.com)
For those with postural hypotension, the blood pressure adjustment is not adequate or it doesn't happen. (thefreedictionary.com)
Postural hypotension may occur if someone is taking certain drugs or medicine for high blood pressure. (thefreedictionary.com)
For those people with postural hypotension, a medication adjustment may help prevent the problem. (thefreedictionary.com)

What Is Postprandial Hypotension? (healthline.com)
When your blood pressure drops after you eat a meal, the condition is known as postprandial hypotension. (healthline.com)
Postprandial hypotension is common in older adults. (healthline.com)
Postprandial hypotension can be diagnosed and managed, often with some simple lifestyle adjustments. (healthline.com)
What are the symptoms of postprandial hypotension? (healthline.com)
The main symptoms of postprandial hypotension are dizziness, lightheadedness, or fainting after a meal. (healthline.com)
If you have drops in blood pressure at other times that aren't associated with eating, you may have other conditions unrelated to postprandial hypotension. (healthline.com)
Another possible cause of postprandial hypotension is related to a fast absorption of glucose, or sugar, and may explain the higher risk for the condition in patients with diabetes. (healthline.com)
However, you can develop postprandial hypotension even if you don't have a condition that affects the autonomic nervous system. (healthline.com)
Sometimes doctors are unable to determine an underlying cause for postprandial hypotension. (healthline.com)
Old age increases your risk of postprandial hypotension and other forms of low blood pressure. (healthline.com)
Postprandial hypotension is rare among young people. (healthline.com)
Certain medical conditions can also increase your risk for postprandial hypotension because they may interfere with the parts of the brain that control the autonomic nervous system. (healthline.com)
The most serious complication related to postprandial hypotension is fainting and the injuries that can follow. (healthline.com)
Postprandial hypotension is usually a temporary condition, but if low blood pressure becomes severe, some serious complications can result. (healthline.com)
A related problem, postprandial hypotension (a fall in blood pressure occurring 15 to 90 minutes after meals) is also common in older subjects. (uptodate.com)
This topic will review the pathogenesis and causes of orthostatic and postprandial hypotension. (uptodate.com)
Postprandial hypotension is a drop in blood pressure that occurs right after eating. (healthline.com)
Older adults, especially those with Parkinson's disease , are more likely to develop postprandial hypotension. (healthline.com)
Some individuals with NOH develop postprandial hypotension, which is defined as the development or worsening of hypotension approximately 30 minutes to 2 hours after eating a meal, particularly large meals high in carbohydrates. (rarediseases.org)
A problem common in the elderly, postprandial hypotension (PPH) prevalence increases with age. (nurse.com)
Define postprandial hypotension and describe its pathophysiology. (nurse.com)
Identify three risk factors, clinical presentation, and complications for postprandial hypotension. (nurse.com)
Discuss the prevention and management of postprandial hypotension. (nurse.com)
It is called postprandial hypotension. (ihealthdirectory.com)
A form of orthostatic hypotension called postprandial hypotension is a sudden drop in blood pressure after a meal. (myhealth.gov.my)
Intake of water half an hour before meals or drinking coffee can counteract postprandial hypotension. (medscape.com)

Contrary to hypertension, which is a term used to describe high blood pressure , hypotension represents abnormally low blood pressure. (news-medical.net)
In physiology and medicine, hypotension refers to a condition of abnormally low blood pressure, in contrast to hypertension, which is high blood pressure. (newworldencyclopedia.org)
However, for many people, abnormally low blood pressure (hypotension) can cause dizziness and fainting. (wellnessresources.com)
Hypotension is defined as abnormally low blood pressure (BP) or a significant decrease in BP. (clinicaladvisor.com)

Nonpharmacologic management of orthostatic hypotension: A systematic review. (memorialhealth.com)
therefore, management of orthostatic hypotension is one of the major tasks in the treatment of patients with MSA. (medscape.com)

Neurally Mediated Hypotension? (bio.net)
Neurally mediated hypotension happens after you stand for a long time. (healthline.com)
Staying hydrated can also help treat and prevent the symptoms of neurally mediated hypotension. (healthline.com)
If you have low blood pressure on standing, or from faulty brain signals (neurally mediated hypotension), a tilt table test can evaluate how your body reacts to changes in position. (mayoclinic.org)
One other type of hypotension is called neurally mediated hypotension. (ihealthdirectory.com)
The three main types of this kind of hypotension are orthostatic hypotension, neurally mediated hypotension (NMH), and severe hypotension linked to shock. (myhealth.gov.my)

There are numerous possible causes for orthostatic hypotension, such as certain medications (e.g. alpha blockers ), autonomic neuropathy , decreased blood volume , multiple system atrophy , and age-related blood vessel stiffness. (wikipedia.org)
Orthostatic hypotension can be caused by several different disorders that affect the entire body (systemic disorders), the central nervous system (CNS, consisting of the brain and spinal cord ), and the autonomic nervous system (peripheral autonomic neuropathy) or as a result of taking certain medications that are commonly prescribed by clinicians. (encyclopedia.com)
Disorders that affect the autonomic nervous system can impair the adjustment of blood pressure, leading to orthostatic hypotension. (medlineplus.gov)
Neurogenic orthostatic hypotension often occurs along with nervous system disorders such as Parkinson disease , dementia with Lewy bodies , multiple system atrophy , pure autonomic failure, diabetes, Guillain-Barré syndrome , dopamine beta-hydroxylase deficiency , or infections that cause disturbances in nerve function (neuropathy). (medlineplus.gov)
Dysautonomia, an intrinsic abnormality in autonomic system functioning, can also lead to hypotension. (wikipedia.org)
Complications of autonomic dysfunction include impotence, bladder dysfunction, gastrointestinal (GI) dysfunction, and orthostatic hypotension and vasomotor abnormalities. (thefreedictionary.com)
Droxidopa is being developed by Chelsea Therapeutics for treating symptomatic, neurogenic orthostatic hypotension in patients with primary autonomic failure -- which can be associated with Parkinson's disease and multiple system atrophy -- dopamine beta-hydroxylase deficiency, and nondiabetic autonomic neuropathy. (medpagetoday.com)
When autonomic reflexes are impaired or intravascular volume is markedly depleted, a significant reduction in blood pressure occurs upon standing, a phenomenon termed orthostatic hypotension. (uptodate.com)
Neurogenic orthostatic hypotension (NOH) is a rare subtype caused by underlying neurologic disorders that affect a specific part of the autonomic nervous system. (rarediseases.org)
The disorder may be associated with Addison's disease, diabetes, and certain neurological disorders including Multiple System Atrophy with Orthostatic Hypotension (formerly known as Shy-Drager syndrome), autonomic system neuropathies, and other dysautonomias. (nih.gov)
Pharmacological studies have suggested that either central or peripheral autonomic nervous system is involved in autonomic failure and orthostatic hypotension in MSA and in PD. (clinicaltrials.gov)
Orthostatic hypotension (OH) is the most common symptom of cardiovascular autonomic dysfunction in parkinsonian patients [ 1 , 2 ], which can affect both patients with idiopathic Parkinson's disease (IPD) and atypical parkinsonism (AP). (hindawi.com)
Orthostatic hypotension is a physical finding defined by the American Autonomic Society and the American Academy of Neurology as a systolic blood pressure decrease of at least 20 mm Hg or a diastolic blood pressure decrease of at least 10 mm Hg within three minutes of standing. (aafp.org)
This 38 minute video examines the signs, symptoms and general treatment options of potentially life-threatening conditions such as Autonomic Dysreflexia, Hypotension, and Deep Vein Thrombosis. (uab.edu)
It causes hypotension and affects other autonomic processes such as the heart rate, breathing and the digestive process. (ihealthdirectory.com)

The primary symptoms of hypotension are lightheadedness or dizziness. (wikipedia.org)
Sanchez-Ferro, Benito-Leon, and Gomez-Esteban (2013) add that a positive tilt table test with the patient positioned at least 60 degrees, complaining of orthostatic symptomatology, such as lightheadedness or dizziness, is also a positive sign of orthostatic hypotension (Fereshtehnejad & Lokk, 2014). (thefreedictionary.com)
Since blood pressure varies according to factors such as exercise and stress , and people can be healthy and yet have blood pressure well below the average, the term hypotension generally is reserved for a minimal condition where blood pressure is so low that insufficient blood reaches the brain , causing dizziness, lightheadedness, or fainting (Turkington 2004). (newworldencyclopedia.org)
Orthostatic hypotension can cause dizziness, syncope, and even angina or stroke. (uptodate.com)
The main possible symptoms or hypotension are: light headache, general weakness, dizziness, fatigue and sleepiness. (botanical-online.com)
Thus, orthostatic hypotension consists of symptoms of dizziness, faintness or lightheadedness which appear only on standing, and which are caused by low blood pressure. (dizziness-and-balance.com)
69 The 6-item Orthostatic Hypotension Symptom Assessment (OHSA) asks about dizziness/ lightheadedness, vision disturbance, weakness, fatigue, trouble concentrating, and head or neck discomfort. (ajmc.com)
If you have orthostatic hypotension, your doctor may suggest that you try some simple ways to prevent symptoms like dizziness. (healthwise.net)
Symptoms of low blood pressure or hypotension that need to be watched out for are dizziness and fainting, severe nausea, cold, clammy skin, being extremely thirsty, fatigue, rapid shallow breaths, blurring of vision, and a sudden inability to concentrate. (ihealthdirectory.com)
Some investigators consider the presence of symptoms of orthostatic hypotension (dizziness and fainting) to be more clinically important than a change in pressure reading. (healio.com)
The term 'hypotension' is usually used only when blood pressure has fallen so far that enough blood can no longer reach the brain, causing dizziness and fainting . (thefreedictionary.com)

Certain medications can also contribute to non-neurogenic orthostatic hypotension, such as antipsychotic or antidepressant drugs, drugs that treat high blood pressure by widening blood vessels (vasodilators), or drugs that help remove water and salt from the body (diuretics). (medlineplus.gov)
An FDA staff review of droxidopa (Northera) for treating neurogenic orthostatic hypotension in patients with certain neurological diseases has recommended against its approval, according to documents released Tuesday. (medpagetoday.com)
The NINDS supports research on conditions such as neurogenic orthostatic hypotension aimed at increasing scientific understanding of the condition and finding ways to treat and prevent it. (nih.gov)
Neurogenic orthostatic hypotension in these diseases results from decreased delivery of the sympathetic neurotransmitter noradrenaline (or hormonal adrenaline) to vascular adrenergic receptors, either because of blunted CNS control or impaired function of postganglionic sympathetic neurons. (clinicaltrials.gov)
Although orthostatic hypotension in elderly patients is common, neurogenic orthostatic hypotension (NOH) is a condition with substantial morbidity and a variable prognosis. (ajmc.com)
In neurogenic orthostatic hypotension (NOH), impaired vasoconstriction is caused by inadequate release of norepinephrine from sympathetic vasomotor neu-rons.1 In addition to having inadequate vasoconstriction, patients with NOH may have an inadequate increase in heart rate when they stand up. (ajmc.com)

Spontaneous intracranial hypotension (SIH) is an unusual clinical entity in which patients often present with a spectrum of clinical signs and symptoms. (appliedradiology.com)
Spontaneous intracranial hypotension is characterized by the classic triad of low cerebrospinal fluid (CSF) pressure, orthostatic headache, and brain "sag" with diffuse pachymeningeal enhancement. (appliedradiology.com)
Recently, a common but underdiagnosed condition that is suspected to be closely related to orthostatic hypotension is spontaneous intracranial hypotension , which results from cerebrospinal fluid leakage. (thefullwiki.org)

In front of symptoms of hypotension, we recommend a visit to the specialist who can diagnose its possible existence. (botanical-online.com)
Still, it's important to see your doctor if you have signs or symptoms of hypotension because they can point to more-serious problems. (wellnessresources.com)
They should also be given symptoms of hypotension in case any side effects occur due to this. (ihealthdirectory.com)

Orthostatic hypotension refers to a reduction of blood pressure (systolic blood pressure that occurs when the heart contracts) of at lest 20 mmHg or a diastolic pressure (pressure when the heart muscle relaxes) of at least 10 mmHg within three minutes of standing. (encyclopedia.com)
Orthostatic hypotension is a drop in blood pressure that occurs when moving from a laying down (supine) position to a standing (upright) position. (medlineplus.gov)
The word "orthostasis" means to stand up, so the condition is defined as low blood pressure (hypotension) that occurs upon standing. (medlineplus.gov)
The body has difficulty achieving stable blood pressure in people with orthostatic hypotension, resulting in a prolonged drop in blood pressure that occurs within minutes after moving from laying down to standing. (medlineplus.gov)
When orthostatic hypotension occurs as part of a genetic syndrome, this feature follows the inheritance pattern of the syndrome. (medlineplus.gov)
Hypotension , or low blood pressure, occurs when the blood pressure in the arteries falls below normal levels. (medicalnewstoday.com)
The algorithm identifies hypotension 15 minutes before it occurs in 84 percent of cases, the researchers report in a new study published in the Online First edition of Anesthesiology , the peer-reviewed medical journal of the American Society of Anesthesiologists (ASA). (news-medical.net)
Orthostatic hypotension is the drop in blood pressure that occurs when you transition from sitting or lying down to standing. (healthline.com)
Orthostatic hypotension (OH) is a common condition characterized as a drop in blood pressure that occurs when a person stands up. (rarediseases.org)
Orthostatic hypotension may be a temporary condition or one that occurs consistently over time (chronic). (rarediseases.org)
Orthostatic hypotension is a sudden fall in blood pressure that occurs when a person assumes a standing position. (nih.gov)
Low blood pressure, or hypotension, occurs when blood pressure during and after each heartbeat is much lower than usual. (reportlinker.com)
2,3 Orthostatic hypotension (OH) occurs when the body is unable to maintain the same blood pressure when standing. (ajmc.com)
Intradialytic hypotension (IDH) occurs in 20% to 55% of haemodialysis sessions and is more frequent among patients on long-term haemodialysis. (cochrane.org)
Orthostatic hypotension is a sudden fall in blood pressure , typically greater than 20/10 mm Hg, that occurs when a person assumes a more vertical postion such as from sitting to standing or from lying down to sitting or standing , usually after a prolonged period of rest. (wikidoc.org)
This type of hypotension occurs upon sitting or standing when moving from a lying position. (ihealthdirectory.com)
This type of hypotension occurs after someone has been standing for long periods of time. (ihealthdirectory.com)
There is also a type of hypotension that occurs after eating. (ihealthdirectory.com)
Orthostatic hypotension occurs if your body isn't able to adjust blood pressure and blood flow fast enough for the change in position. (myhealth.gov.my)
Orthostatic hypotension (OH) is defined as a drop in blood pressure that occurs when you stand up from a sitting or lying position. (vitamindcouncil.org)

Additionally, hypertension present in 30% of persons over 75 years of age also predisposes a person to orthostatic hypotension, since hypertension reduces baroreflex sensitivity. (encyclopedia.com)
Hypotension is the opposite of hypertension, which is high blood pressure. (wikipedia.org)
Contrary to hypertension, hypotension is defined by signs and symptoms of low blood flow, not by a specific number. (clinicaladvisor.com)
A new trial published in Journal of Hypertension has found that intermittent vitamin D supplementation does not improve orthostatic hypotension among elderly patients. (vitamindcouncil.org)

However, this transient orthostatic hypotension can cause lightheadedness that may result in falls and injury, particularly in older adults. (medlineplus.gov)
Symptoms of orthostatic hypotension include lightheadedness , weakness , blurred vision , and syncope or passing out. (medicinenet.com)

There are also syndromes that can cause hypotension in patients including orthostatic hypotension, vasovagal syncope, and other rarer conditions. (wikipedia.org)
Alcohol can potentiate orthostatic hypotension to the point of syncope. (wikipedia.org)
POTs is defined by a fast pulse on standing, and is not the same as orthostatic hypotension (low blood pressure on standing), or syncope (passing out in any position). (dizziness-and-balance.com)
Orthostatic hypotension and orthostatic syncope. (memorialhealth.com)
3/24/2015 DynaMed Systematic Literature Surveillance https://www.dynamed.com/condition/orthostatic-hypotension-and-orthostatic-syncope: Mills PB, Fung CK, et al. (memorialhealth.com)

Decreased cardiac output despite normal blood volume, due to severe congestive heart failure, large myocardial infarction, heart valve problems, or extremely low heart rate (bradycardia), often produces hypotension and can rapidly progress to cardiogenic shock. (wikipedia.org)
Hypotension often is associated with shock, though not necessarily indicative of it. (newworldencyclopedia.org)
Severe hypotension is related to shock. (healthline.com)
Shock-induced hypotension is the most serious form of the condition. (healthline.com)
Serious hypotension can be very dangerous, since it may lead to hypotensive shock. (botanical-online.com)
The CORE scan (Concentrated Overview of Resuscitative Efforts) and the RUSH protocol (Rapid Ultrasound for Shock and Hypotension) are two common ultrasound algorithms that should be used during the assessment and management of patients who present with shock1,2. (epmonthly.com)
Adapted and updated from Tuggle D. Hypotension and shock: the truth about blood pressure. (lww.com)
Related conditions: Hypotension may be related to but is not synonymous with 'shock. (oncologynurseadvisor.com)
There is a significant overlap between the causes of hypotension and shock. (oncologynurseadvisor.com)
hypotension resistant to treatment with fluids therefore requiring inotropes is septic shock. (oncologynurseadvisor.com)
In shock, hypotension may lead to hypoperfusion, organ failure and death. (plos.org)
When hypotension is accompanied by these symptoms a person should be evaluated by medical personnel immediately for underlying medical conditions such as heart disease, endocrine problems, allergic reactions, severe shock, or even internal bleeding. (ihealthdirectory.com)
Severe shock including sudden blood loss can cause hypotension. (ihealthdirectory.com)
Shock, a severe form of hypotension, is a condition that's often fatal if not treated right away. (myhealth.gov.my)
Blood pressure drops much lower in shock than in other types of hypotension. (myhealth.gov.my)

Using a gamma camera and the stochastic method, regional cerebral blood flow was measured in a patient with the diagnosis of idiopathic orthostatic hypotension. (springer.com)

Very mild occasional orthostatic hypotension is common and can occur briefly in anyone, although it is prevalent in particular among the elderly and those with known low blood pressure. (wikipedia.org)
Orthostatic hypotension is characterized by symptoms that occur after standing (from lying or sitting), particularly when this is done rapidly. (wikipedia.org)
Orthostatic hypotension can occur if normal physiological mechanisms become faulty, such as inadequate cardiovascular compensation when shifting positions (i.e. change from supine to erect position), or due to excessive reduction in blood volume. (encyclopedia.com)
When signs and symptoms of orthostatic hypotension do occur, they are usually the result of a reduction in blood flow (hypoperfusion) to tissues, particularly the brain. (medlineplus.gov)
Scientists have developed an algorithm that predicts potentially dangerous low blood pressure , or hypotension, that can occur during surgery. (news-medical.net)
Osmotic pressure is used to detect when hypotension is about to occur in a patient, as a result of excessive blood volume reduction during treatment of the blood. (google.com)
With increasing evidence of the risks associated with hypotension during surgery, the HPI feature offers the ability to detect and respond to potentially developing hypotension by recognizing trends and receiving alerts before they occur. (edwards.com)
Other types of hypotension occur only sometimes, when blood pressure suddenly drops too low. (myhealth.gov.my)
Orthostatic hypotension can occur in all age groups. (myhealth.gov.my)
Orthostatic hypotension leads to curtailing of physical activity, with all of the problems of deconditioning that consequently occur. (medscape.com)
Orthostatic hypotension is a sustained drop in blood pressure that may occur when moving from a supine or sitting position to a standing position. (healio.com)

When hypotension is associated with significant symptoms, reduced perfusion to an organ, or some underlying disease process, hypotension can be considered clinically important. (news-medical.net)
Just a reminder that even if they are asymptomatic, hypotension can cause other issues such as poor perfusion of organs and, if chronic, clotting of accesses. (allnurses.com)
1 , 2 ] Vasopressors are administered under the assumption that vasoconstriction will improve organ perfusion when hypotension is caused by abnormal vasodilation. (plos.org)
Hypotension will lead to inadequate perfusion of organs and over time, organ dysfunction. (clinicaladvisor.com)

Excessive vasodilation, or insufficient constriction of the blood vessels (mostly arterioles), causes hypotension. (wikipedia.org)
What causes hypotension? (healthline.com)

Intradialytic hypotension (IDH) is one of the most severe complications during hemodialysis. (unboundmedicine.com)
We investigated total (TBW), extracellular (ECW) and intracellular water (ICW) in chronic intermittent hemodialysis dialysis hypotension-prone (CRF-HP, n = 11) and nonhypotension-prone (CRF-NHP, n = 10) patients with end-stage renal disease before, every 30 minutes during, as well as after dialysis and within onset of intradialytic hypotension by multifrequent bioimpedance analysis (BIA). (unboundmedicine.com)
The onset of intradialytic hypotension (n = 35) did not differ intraindividually compared to normotensive periods (n = 411). (unboundmedicine.com)
Intradialytic hypotension (IDH), which is caused by a decrease in blood volume, is a common complication of haemodialysis treatment. (cochrane.org)
Human albumin for intradialytic hypotension in haemodialysis patients. (cochrane.org)
Gangadharan Komala M, Pianta TJ, Jardine MJ, Webster AC, Perkovic V. Interventions for preventing intradialytic hypotension in haemodialysis patients. (cochrane.org)

Maintaining adequate hydration is the best way to prevent orthostatic hypotension if the hypotension is caused by dehydration . (medicinenet.com)
Drink plenty of water to avoid hypotension due to dehydration, especially if you are vomiting or have diarrhea. (healthline.com)
Orthostatic hypotension may be caused by hypovolemia (a decreased amount of blood in the body), resulting from bleeding, the excessive use of diuretics , vasodilators , or other types of drugs, dehydration , or prolonged bed rest . (thefullwiki.org)
Dehydration can cause hypotension as well. (ihealthdirectory.com)

The prevalence of orthostatic hypotension varies from 5 to 20 percent in different reports. (uptodate.com)

Still, when systolic pressure is less than 80 mmHg and diastolic pressure less than 50 mmHg, a diagnosis of hypotension can be made. (news-medical.net)
Diagnosis and treatment of hypotension? (botanical-online.com)
It is helpful to construct a differential diagnosis for hypotension by thinking about the problem from a physiologic standpoint. (clinicaladvisor.com)

Chronic orthostatic hypotension is associated with cerebral hypoperfusion that may accelerate the pathophysiology of dementia. (wikipedia.org)

Ephedrine has been used as the agent of choice in the prevention and treatment of hypotension following spinal anesthesia in pregnant women. (thefreedictionary.com)
Riley ET, Cohen SE, Rubenstein AJ, Flanagan B: Prevention of hypotension after spinal anesthesia for cesarean section: six percent hetastarch versus lactated Ringer's solution [see comments]. (springer.com)
Severe hypotension following spinal anesthesia in patients on amlodipine. (nih.gov)

A person with a reading of 90/60 mmHg or lower is considered to have hypotension or low blood pressure. (medicalnewstoday.com)
People who have orthostatic hypotension often experience a drop in blood pressure of about 20/10 mmHg within 3 minutes of standing. (medicalnewstoday.com)
There were no clinically important interactions between preoperative blood pressures and the relationship between hypotension and myocardial or kidney injury at intraoperative mean arterial blood pressures less than 65 mmHg. (edwards.com)
In this multicenter, prospective observational study, the patient-level average MAP while receiving vasopressors for severe hypotension was 75 mmHg, approximately 10 mmHg above current recommendations and stated practices. (plos.org)
Hypotension is blood pressure that's lower than 90/60 mmHg. (myhealth.gov.my)

Perhaps the most important message is that in the setting of clinical trials, where patients are well supervised, orthostatic hypotension is not a major factor in the use of more intensive BP management," Bhalla emphasized. (medscape.com)
It is noteworthy, that in a real-life setting, we may see more episodes of orthostatic hypotension with intensive treatment, when patients are not seen as often and not supervised as closely as those patients that are participating in a clinical trial. (medscape.com)
Patients with CHF and orthostatic hypotension need to closely monitor fluid intake and make changes only with physician supervision. (medicinenet.com)
Advance warning that hypotension is imminent, even if the warning comes only 10 to 15 minutes ahead, could reduce the risk of harm to patients, the authors note. (news-medical.net)
The algorithm was developed to observe subtle signs in routinely collected physiological data that could predict the onset of hypotension in surgical patients. (news-medical.net)
Some patients who start with orthostatic hypotension, evolve into one of the variants of Parkinson's disease or dementia with Lewy Bodies . (dizziness-and-balance.com)
Orthostatic hypotension is nearly universal in MSA, present in about 50% of patients with dementia with Lewy bodies (Akaogi et al, 2009) , and in 5-50% of patients with Parkinson's . (dizziness-and-balance.com)
However, since Parkinsonism is by far the most common disorder, there may be as many patients with orthostatic hypotension and Parkinson's disease as any of the former. (dizziness-and-balance.com)
Orthostatic hypotension (OH) is one of the commonly occurring nonmotor symptoms in patients with idiopathic Parkinson's disease (IPD) and atypical parkinsonism (AP). (hindawi.com)
Recent studies show associations between intraoperative hypotension and increased risk of myocardial infarction (MI) and acute kidney injury (AKI) in non-cardiac surgical patients. (edwards.com)
In patients with traumatic injuries, prehospital hypotension that resolves by Emergency Department (ED) arrival is of uncertain significance. (nih.gov)
We examined the impact of prehospital hypotension (PH) in normotensive ED patients with traumatic injuries on predicting mortality and chest/abdominal operative intervention. (nih.gov)
In this study of normotensive trauma center patients, prehospital hypotension was associated with increased risk of mortality and significant chest or abdominal injury. (nih.gov)
An atrial pacemaker may be used in patients with profound bradycardia in addition to orthostatic hypotension as a means of preventing the hypotension. (medscape.com)
The earliest symptom that brings patients to medical attention usually is orthostatic hypotension. (medscape.com)
To investigate the involvement of hHGF in NO production and hypotension in hemodialysis patients, we measured concentrations of serum hHGF and plasma NO 3 - , an index of endogenous NO production, in 114 patients undergoing maintenance hemodialysis. (go.jp)

Medications that can cause orthostatic hypotension include Tricyclic antidepressants , antipsychotics, monoamine oxidase inhibitors, antihypertensives, diuretics, vasodilators, Levodopa, beta-blockers (heart medications), and blood pressure medications that inhibit a chemical called angiotensin (angiotensin-converting-enzyme inhibitors). (encyclopedia.com)
Some medications, such as beta-blockers and antidepressants , can also trigger symptoms linked to orthostatic hypotension. (medicalnewstoday.com)
Some medications can also lead to hypotension. (wikipedia.org)
Other medications can produce hypotension by different mechanisms. (wikipedia.org)
Beta blockers , other high blood pressure medications, and medications such as sildenafil ( Viagra ) may all cause orthostatic hypotension . (medicinenet.com)
In normal conditions body reacts contracting the blood vessels and increasing heart rate to pump up more blood again, but under certain circumstances (certain medications or diseases) blood pressure is not stabilized as soon as necessary, causing this type of hypotension. (botanical-online.com)
When orthostatic hypotension is caused by hypovolemia due to medications, the disorder may be reversed by adjusting the dosage or by discontinuing the medication. (nih.gov)
However, some people may need medications for orthostatic hypotension. (newcastle-hospitals.org.uk)
Consider holding or lowering dosage of medications that may cause hypotension. (clinicaladvisor.com)
2. Do any of the medications taken cause hypotension? (clinicaladvisor.com)
Some of the reasons for hypotension can include taking some medications. (ihealthdirectory.com)

Global Markets Direct's latest Pharmaceutical and Healthcare disease pipeline guide Hypotension - Pipeline Review, H2 2019, provides an overview of the Hypotension (Cardiovascular) pipeline landscape. (reportlinker.com)
Global Markets Direct's Pharmaceutical and Healthcare latest pipeline guide Hypotension - Pipeline Review, H2 2019, provides comprehensive information on the therapeutics under development for Hypotension (Cardiovascular), complete with analysis by stage of development, drug target, mechanism of action (MoA), route of administration (RoA) and molecule type. (reportlinker.com)
The Hypotension (Cardiovascular) pipeline guide also reviews of key players involved in therapeutic development for Hypotension and features dormant and discontinued projects. (reportlinker.com)
Hypotension (Cardiovascular) pipeline guide helps in identifying and tracking emerging players in the market and their portfolios, enhances decision making capabilities and helps to create effective counter strategies to gain competitive advantage. (reportlinker.com)
The pipeline guide provides a snapshot of the global therapeutic landscape of Hypotension (Cardiovascular). (reportlinker.com)
The pipeline guide reviews pipeline therapeutics for Hypotension (Cardiovascular) by companies and universities/research institutes based on information derived from company and industry-specific sources. (reportlinker.com)
The pipeline guide reviews key companies involved in Hypotension (Cardiovascular) therapeutics and enlists all their major and minor projects. (reportlinker.com)
The pipeline guide evaluates Hypotension (Cardiovascular) therapeutics based on mechanism of action (MoA), drug target, route of administration (RoA) and molecule type. (reportlinker.com)
Find and recognize significant and varied types of therapeutics under development for Hypotension (Cardiovascular). (reportlinker.com)
Formulate corrective measures for pipeline projects by understanding Hypotension (Cardiovascular) pipeline depth and focus of Indication therapeutics. (reportlinker.com)
Hypotension and cardiovascular signs of anaphylaxis are difficult to recognize in infants. (greenmedinfo.com)
Hypotension - Pipeline Review, H1 2017, provides an overview of the Hypotension (Cardiovascular) pipeline landscape. (medgadget.com)
Hypotension is a major cardiovascular complication of hemodialysis, and enhanced production of nitric oxide (NO) may be involved in hemodialysis hypotension. (go.jp)

Diseases of the CNS that can cause orthostatic hypotension include MSA (multiple systems atrophy), Parkinson's disease , multiple strokes, brain stem lesions, myelopathy. (encyclopedia.com)
Parkinson's disease , pregnancy, and heart conditions such as irregular heart rhythms and valve disease are also known to cause symptoms connected to orthostatic hypotension. (medicalnewstoday.com)
The purpose of this study is to determine whether Fipamezole is effective in the treatment of orthostatic hypotension and related symptoms in multiple system atrophy and Parkinson's disease. (clinicaltrials.gov)
English-written original or review articles with keywords such as " Parkinson's disease ," " atypical parkinsonism ," and " orthostatic hypotension " were searched for relevant evidences. (hindawi.com)
Combined search terms such as " Parkinson's disease ," " atypical parkinsonism ," and " orthostatic hypotension " were entered to look for English-written original or review papers. (hindawi.com)

When measuring blood pressure, orthostatic hypotension is defined as a decrease in blood pressure by at least 20mmHg systolic or 10mmHg diastolic within 3 minutes of standing. (medlineplus.gov)
A systolic blood pressure of less than 90 millimeters of mercury (mm Hg) or diastolic of less than 60 mm Hg is generally considered to be hypotension. (wikipedia.org)
Hypotension was defined as a decrease in systolic blood pressure of 30% or more from the baseline recording and was promptly treated with intravenous Ephedrine hydrochloride 6 mg increments, in addition to rushing of IV fluid. (thefreedictionary.com)
Orthostatic hypotension is defined as a decrease in systolic blood pressure of 20 mm Hg or a decrease in diastolic blood pressure of 10 mm Hg within three minutes of standing when compared with blood pressure from the sitting or supine position. (aafp.org)

What the heck, I've been injured for almost 34 years and about three years ago I started with low blood pressure/hypotension issues. (rutgers.edu)

[4] Some people may experience severe orthostatic hypotension with the only symptoms being confusion and/or extreme fatigue. (wikipedia.org)
Chronic severe orthostatic hypotension may present as fluctuating cognition/ delirium . (wikipedia.org)

Persons affected with symptomatic orthostatic hypotension have symptoms when tilting head upward or when moving toward an erect position. (encyclopedia.com)
Do you have symptomatic orthostatic hypotension (SOH)? (medhelp.org)
5. If you have symptomatic orthostatic hypotension (SOH), consider participating in the STAND 405/406 (Study To Assess cliNical effects of midoDrine) studies. (medhelp.org)

And, the trial that failed in its primary endpoint did show a significant benefit on a secondary efficacy endpoint, scores on the Orthostatic Hypotension Questionnaire. (medpagetoday.com)
Two self-report questionnaires, the Orthostatic Hypotension Questionnaire and the Orthostatic Grading Scale, can help evaluate a patient's level of impairment, document progression, and assess the response to pharmacotherapy in clinical practice. (ajmc.com)

The drop in blood pressure may be sudden (vasovagal orthostatic hypotension), within 3 minutes (classic orthostatic hypotension) or gradual (delayed orthostatic hypotension). (wikipedia.org)
The sudden drops in blood pressure caused by orthostatic hypotension are a risk factor for strokes because of the reduced blood supply to the brain. (medicalnewstoday.com)
The sudden disturbance of emotions can produce hypotension. (botanical-online.com)
Orthostatic hypotension is a sudden drop in blood pressure when a person stands. (memorialhealth.com)
A sudden, significant fall in blood pressure upon standing indicates orthostatic hypotension. (thefullwiki.org)

There are many mechanisms and causes of hypotension, such as excessive bleeding resulting in loss of blood volume, congestive heart failure resulting in decreased cardiac output, or injury to the brain or spinal cord resulting in excessive vasodilation (dilation of arterial blood vessels). (newworldencyclopedia.org)
A second data set, used for external validation of the model, consisted of 204 patient records with 33,236 minutes of arterial pressure waveform recordings and 1,923 episodes of hypotension. (news-medical.net)
Orthostatic hypotension is primarily caused by gravity-induced blood pooling in the lower extremities, which in turn compromises venous return, resulting in decreased cardiac output and subsequently lowering of arterial pressure. (thefullwiki.org)
Orthostatic hypotension is a disorder of the mechanisms by which arterial pressure is maintained within normal limits in the short term. (healio.com)

The most common mechanism causing hypotension is reduced blood volume , called hypovolemia. (newworldencyclopedia.org)

One of the two randomized trials failed to meet its primary endpoint, which was a statistically significant improvement in scores on the first item in the Orthostatic Hypotension Symptom Analysis scale. (medpagetoday.com)
Hypotension is the symptom of something is going wrong in one's body. (botanical-online.com)

Hypotension in terms of the numerical definition may be asymptomatic but in a clinical context a patient is hypotensive if the low BP is associated with symptoms or clinical signs. (oncologynurseadvisor.com)
The remainder of this discussion will focus on the diagnostic definition of orthostatic hypotension, the influence of aging on the occurrence of orthostatic hypotension, the possible causes of orthostatic intolerance, and finally, nursing implications. (healio.com)
Therefore, their definition of orthostatic hypotension includes evidence of these symptoms with a change in position. (healio.com)

Chronic orthostatic hypotension is a causal factor in dementia. (wikipedia.org)
With chronic orthostatic hypotension, the condition and its effects may worsen even as fainting and many other symptoms become less frequent. (wikipedia.org)
Chronic use of alpha blockers or beta blockers can lead to hypotension. (wikipedia.org)
This form of hypotension, called chronic asymptomatic hypotension, isn't usually harmful. (healthline.com)
People who always have low blood pressure have chronic asymptomatic hypotension. (myhealth.gov.my)
Circulating hHGF may participate in the mechanism of chronic hemodialysis hypotension by affecting endogenous NO production. (go.jp)

When the body is not able to compensate the blood lost to some vital organs as the brain, symptoms of this type of hypotension appear. (botanical-online.com)
One type of hypotension is orthostatic hypotension. (ihealthdirectory.com)

Children experience this form of hypotension more often than adults. (healthline.com)

There are several different types of hypotension that need to be discussed. (ihealthdirectory.com)
There are several types of hypotension. (myhealth.gov.my)

That data set included 25,461 episodes of hypotension. (news-medical.net)
No further THC-CBD oil drops were administered, and she had no further episodes of hypotension. (cmaj.ca)

Orthostatic hypotension is a decrease of blood pressure when standing, due to changes in the blood pressure regulation systems within the body. (encyclopedia.com)
body systems to prevent any adverse outcome (decrease in blood pressure, or hypotension) during positional change. (encyclopedia.com)

o The report presents the market analysis of the global Asia Pacific Intra-Dialytic Hypotension (IDH) market along with the regional trend and future estimations o It provides extensive information about the market segments from 2019 to 2027 to understand the market dynamics. (openpr.com)

This work provides further statistical evidence that orthostatic hypotension is not a reason to avoid intensive treatment to reduce blood pressure. (medscape.com)
Treatment of hypotension may include the use of intravenous fluids or vasopressors. (wikipedia.org)
Successful treatment of orthostatic hypotension with 9-alpha-Fluorohydrocortisone. (springer.com)
No randomised or controlled trial was identified comparing albumin to crystalloids (other than normal saline) or non-protein colloids, or a combination of both, in the treatment of symptomatic hypotension during dialysis. (cochrane.org)
Orthostatic hypotension can result from antihypertensive medicines such as diuretics especially furosemide , Lisinopril and Hydrochlorothiazide , Beta Blockers , Calcium channel blockers and ACE Inhibitors , Prazosin and Tamsulosin which is a drug for treatment of Benign prostatic hyperplasia . (wikidoc.org)

Impact of orthostatic hypotension on clinical symptoms is assessed with a subjective scale and questionnaire. (clinicaltrials.gov)
In a study conducted by the Cleveland Clinic, researchers found that intraoperative hypotension is associated with clinical outcomes after noncardiac surgery. (edwards.com)
Amid strong interest for cure of Hypotension from companies and institutes, the current research work serves as a reliable and comprehensive source of information of global Hypotension clinical and pre clinical products. (reportlinker.com)

Available at: https://www.ninds.nih.gov/Disorders/All-Disorders/Orthostatic-Hypotension-Information-Page. (memorialhealth.com)

Orthostasis means upright posture, and hypotension means low blood pressure. (dizziness-and-balance.com)

Physicians haven't had a way to predict hypotension during surgery, so they have to be reactive, and treat it immediately without any prior warning. (news-medical.net)
Being able to predict hypotension would allow physicians to be proactive instead of reactive," said lead researcher Maxime Cannesson, M.D., Ph.D., professor of anesthesiology and vice chair for perioperative medicine at UCLA Medical Center in Los Angeles. (news-medical.net)
By finding a way to predict hypotension, we can avoid its complications, which can include postoperative heart attack and acute kidney injury, that can lead to death in some cases. (news-medical.net)
We are using machine learning to identify which of these individual features, when they happen together and at the same time, predict hypotension," Dr. Cannesson said. (news-medical.net)
In conclusion, multifrequent BIA is not capable to predict hypotension in the individual patient during a particular dialysis session. (unboundmedicine.com)

Anatomy5

Organisms3

Diseases24

Chemicals and Drugs25

Analytical, Diagnostic and Therapeutic Techniques and Equipment27

Psychiatry and Psychology1

Phenomena and Processes22

Disciplines and Occupations1

Health Care2

Nitric oxide limits the eicosanoid-dependent bronchoconstriction and hypotension induced by endothelin-1 in the guinea-pig. (1/1770)

The Janus-faced aspect of 'dry weight'. (2/1770)

Hypotension induced by exercise is associated with enhanced release of adenyl purines from aged rat artery. (3/1770)

Mediation of humoral catecholamine secretion by the renin-angiotensin system in hypotensive rainbow trout (Oncorhynchus mykiss). (4/1770)

Sudden death in hypertrophic cardiomyopathy: potential importance of altered autonomic control of vasculature. (5/1770)

Effects of isoflurane anesthesia on pulmonary vascular response to K+ ATP channel activation and circulatory hypotension in chronically instrumented dogs. (6/1770)

Spike generation from dorsal roots and cutaneous afferents by hypoxia or hypercapnia in the rat in vivo. (7/1770)

Effects of phosphodiesterase inhibitors after coronary artery bypass grafting. (8/1770)

Hypotension

Hypotension, Controlled

Hypotension, Orthostatic

Intracranial Hypotension

Blood Pressure

Post-Exercise Hypotension

Trimethaphan

Bradycardia

Heart Rate

Ephedrine

Anesthesia, Spinal

Anesthesia, Obstetrical

Hemodynamics

Autonomic Nervous System Diseases

Shock

Anesthesia

Shock, Septic

Midodrine

Cerebrovascular Circulation

Vascular Resistance

Nitroprusside

Ocular Hypotension

Cardiac Output

Hypovolemia

Ferricyanides

Syncope

Shy-Drager Syndrome

Pure Autonomic Failure

Blood Patch, Epidural

Posture

Intraoperative Complications

Subdural Effusion

Tilt-Table Test

Intracranial Pressure

Vasoconstrictor Agents

Shock, Hemorrhagic

Cardiovascular System

Fluid Therapy

Hemorrhage

Sympathetic Nervous System

Dogs

Blood Volume

Cesarean Section

Methyldopa

Anesthesia, Epidural

Autonomic Nervous System

Bionics

Isotonic Solutions

Pressoreceptors

Phenylephrine

Norepinephrine

Regional Blood Flow

Time Factors

Baroreflex

Antihypertensive Agents

Splanchnic Circulation

Clonidine

Vasodilation

Lypressin

Dose-Response Relationship, Drug

Plasma Substitutes

Syncope, Vasovagal

Infusions, Intravenous

Rats, Sprague-Dawley

Fludrocortisone

Valsalva Maneuver

Renal Dialysis

Hydralazine

Isoflurane

Injections, Intravenous

Bupivacaine

Reflex

Supine Position

Prospective Studies

Anesthesia, General

Hypertension

Vasodilator Agents

Heat Stroke

Anaphylaxis

Tachycardia