Pulmonary Gas Exchange: The exchange of OXYGEN and CARBON DIOXIDE between alveolar air and pulmonary capillary blood that occurs across the BLOOD-AIR BARRIER.Ventilation-Perfusion Ratio: The ratio of alveolar ventilation to simultaneous alveolar capillary blood flow in any part of the lung. (Stedman, 25th ed)Noble Gases: Elements that constitute group 18 (formerly the zero group) of the periodic table. They are gases that generally do not react chemically.Blood Gas Analysis: Measurement of oxygen and carbon dioxide in the blood.Arrhythmia, Sinus: Irregular HEART RATE caused by abnormal function of the SINOATRIAL NODE. It is characterized by a greater than 10% change between the maximum and the minimum sinus cycle length or 120 milliseconds.Oxygen: An element with atomic symbol O, atomic number 8, and atomic weight [15.99903; 15.99977]. It is the most abundant element on earth and essential for respiration.Carbon Dioxide: A colorless, odorless gas that can be formed by the body and is necessary for the respiration cycle of plants and animals.Pulmonary Circulation: The circulation of the BLOOD through the LUNGS.Pulmonary Diffusing Capacity: The amount of a gas taken up, by the pulmonary capillary blood from the alveolar gas, per minute per unit of average pressure of the gradient of the gas across the BLOOD-AIR BARRIER.Respiratory Mechanics: The physical or mechanical action of the LUNGS; DIAPHRAGM; RIBS; and CHEST WALL during respiration. It includes airflow, lung volume, neural and reflex controls, mechanoreceptors, breathing patterns, etc.Partial Pressure: The pressure that would be exerted by one component of a mixture of gases if it were present alone in a container. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)Respiratory Dead Space: That part of the RESPIRATORY TRACT or the air within the respiratory tract that does not exchange OXYGEN and CARBON DIOXIDE with pulmonary capillary blood.Oxygen Consumption: The rate at which oxygen is used by a tissue; microliters of oxygen STPD used per milligram of tissue per hour; the rate at which oxygen enters the blood from alveolar gas, equal in the steady state to the consumption of oxygen by tissue metabolism throughout the body. (Stedman, 25th ed, p346)Respiration: The act of breathing with the LUNGS, consisting of INHALATION, or the taking into the lungs of the ambient air, and of EXHALATION, or the expelling of the modified air which contains more CARBON DIOXIDE than the air taken in (Blakiston's Gould Medical Dictionary, 4th ed.). This does not include tissue respiration (= OXYGEN CONSUMPTION) or cell respiration (= CELL RESPIRATION).Gases: The vapor state of matter; nonelastic fluids in which the molecules are in free movement and their mean positions far apart. Gases tend to expand indefinitely, to diffuse and mix readily with other gases, to have definite relations of volume, temperature, and pressure, and to condense or liquefy at low temperatures or under sufficient pressure. (Grant & Hackh's Chemical Dictionary, 5th ed)Tidal Volume: The volume of air inspired or expired during each normal, quiet respiratory cycle. Common abbreviations are TV or V with subscript T.Lung: Either of the pair of organs occupying the cavity of the thorax that effect the aeration of the blood.Pulmonary Ventilation: The total volume of gas inspired or expired per unit of time, usually measured in liters per minute.Respiratory Function Tests: Measurement of the various processes involved in the act of respiration: inspiration, expiration, oxygen and carbon dioxide exchange, lung volume and compliance, etc.Smoke Inhalation Injury: Pulmonary injury following the breathing in of toxic smoke from burning materials such as plastics, synthetics, building materials, etc. This injury is the most frequent cause of death in burn patients.Pulmonary Edema: Excessive accumulation of extravascular fluid in the lung, an indication of a serious underlying disease or disorder. Pulmonary edema prevents efficient PULMONARY GAS EXCHANGE in the PULMONARY ALVEOLI, and can be life-threatening.Physical Exertion: Expenditure of energy during PHYSICAL ACTIVITY. Intensity of exertion may be measured by rate of OXYGEN CONSUMPTION; HEAT produced, or HEART RATE. Perceived exertion, a psychological measure of exertion, is included.Hepatopulmonary Syndrome: A syndrome characterized by the clinical triad of advanced chronic liver disease, pulmonary vascular dilatations, and reduced arterial oxygenation (HYPOXEMIA) in the absence of intrinsic cardiopulmonary disease. This syndrome is common in the patients with LIVER CIRRHOSIS or portal hypertension (HYPERTENSION, PORTAL).Respiration, Artificial: Any method of artificial breathing that employs mechanical or non-mechanical means to force the air into and out of the lungs. Artificial respiration or ventilation is used in individuals who have stopped breathing or have RESPIRATORY INSUFFICIENCY to increase their intake of oxygen (O2) and excretion of carbon dioxide (CO2).Hyperventilation: A pulmonary ventilation rate faster than is metabolically necessary for the exchange of gases. It is the result of an increased frequency of breathing, an increased tidal volume, or a combination of both. It causes an excess intake of oxygen and the blowing off of carbon dioxide.Hemodynamics: The movement and the forces involved in the movement of the blood through the CARDIOVASCULAR SYSTEM.Extravascular Lung Water: Water content outside of the lung vasculature. About 80% of a normal lung is made up of water, including intracellular, interstitial, and blood water. Failure to maintain the normal homeostatic fluid exchange between the vascular space and the interstitium of the lungs can result in PULMONARY EDEMA and flooding of the alveolar space.Cardiac Output: 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).Exercise Test: Controlled physical activity which is performed in order to allow assessment of physiological functions, particularly cardiovascular and pulmonary, but also aerobic capacity. Maximal (most intense) exercise is usually required but submaximal exercise is also used.Anoxia: Relatively complete absence of oxygen in one or more tissues.Respiratory Distress Syndrome, Adult: A syndrome characterized by progressive life-threatening RESPIRATORY INSUFFICIENCY in the absence of known LUNG DISEASES, usually following a systemic insult such as surgery or major TRAUMA.Exercise: Physical activity which is usually regular and done with the intention of improving or maintaining PHYSICAL FITNESS or HEALTH. Contrast with PHYSICAL EXERTION which is concerned largely with the physiologic and metabolic response to energy expenditure.Bicycling: The use of a bicycle for transportation or recreation. It does not include the use of a bicycle in studying the body's response to physical exertion (BICYCLE ERGOMETRY TEST see EXERCISE TEST).Pulmonary Alveoli: Small polyhedral outpouchings along the walls of the alveolar sacs, alveolar ducts and terminal bronchioles through the walls of which gas exchange between alveolar air and pulmonary capillary blood takes place.Lung Diseases: Pathological processes involving any part of the LUNG.Dogs: 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)Vital Capacity: The volume of air that is exhaled by a maximal expiration following a maximal inspiration.Spirometry: Measurement of volume of air inhaled or exhaled by the lung.Heart Rate: The number of times the HEART VENTRICLES contract per unit of time, usually per minute.Respiratory Transport: The processes of diffusion across the BLOOD-AIR BARRIER, and the chemical reactions coupled with diffusion that effect the rate of PULMONARY GAS EXCHANGE, generally at the alveolar level.Lactic Acid: A normal intermediate in the fermentation (oxidation, metabolism) of sugar. The concentrated form is used internally to prevent gastrointestinal fermentation. (From Stedman, 26th ed)Forced Expiratory Volume: Measure of the maximum amount of air that can be expelled in a given number of seconds during a FORCED VITAL CAPACITY determination . It is usually given as FEV followed by a subscript indicating the number of seconds over which the measurement is made, although it is sometimes given as a percentage of forced vital capacity.Time Factors: Elements of limited time intervals, contributing to particular results or situations.Lung Volume Measurements: Measurement of the amount of air that the lungs may contain at various points in the respiratory cycle.Neon: Neon. A noble gas with the atomic symbol Ne, atomic number 10, and atomic weight 20.18. It is found in the earth's crust and atmosphere as an inert, odorless gas and is used in vacuum tubes and incandescent lamps.Coronary Occlusion: Complete blockage of blood flow through one of the CORONARY ARTERIES, usually from CORONARY ATHEROSCLEROSIS.Inhalation: The act of BREATHING in.Positive-Pressure Respiration: A method of mechanical ventilation in which pressure is maintained to increase the volume of gas remaining in the lungs at the end of expiration, thus reducing the shunting of blood through the lungs and improving gas exchange.Balloon Occlusion: Use of a balloon CATHETER to block the flow of blood through an artery or vein.Retinal Vein Occlusion: Blockage of the RETINAL VEIN. Those at high risk for this condition include patients with HYPERTENSION; DIABETES MELLITUS; ATHEROSCLEROSIS; and other CARDIOVASCULAR DISEASES.Retinal Artery Occlusion: Sudden ISCHEMIA in the RETINA due to blocked blood flow through the CENTRAL RETINAL ARTERY or its branches leading to sudden complete or partial loss of vision, respectively, in the eye.Water Loss, Insensible: Loss of water by diffusion through the skin and by evaporation from the respiratory tract.Plant Transpiration: The loss of water vapor by plants to the atmosphere. It occurs mainly from the leaves through pores (stomata) whose primary function is gas exchange. The water is replaced by a continuous column of water moving upwards from the roots within the xylem vessels. (Concise Dictionary of Biology, 1990)Arterial Occlusive Diseases: Pathological processes which result in the partial or complete obstruction of ARTERIES. They are characterized by greatly reduced or absence of blood flow through these vessels. They are also known as arterial insufficiency.Liquid Ventilation: Artificial respiration (RESPIRATION, ARTIFICIAL) using an oxygenated fluid.Dental Occlusion: The relationship of all the components of the masticatory system in normal function. It has special reference to the position and contact of the maxillary and mandibular teeth for the highest efficiency during the excursive movements of the jaw that are essential for mastication. (From Jablonski, Dictionary of Dentistry, 1992, p556, p472)Models, Biological: Theoretical representations that simulate the behavior or activity of biological processes or diseases. For disease models in living animals, DISEASE MODELS, ANIMAL is available. Biological models include the use of mathematical equations, computers, and other electronic equipment.
... and most of it through pulmonary veins. Blood reaches from the pulmonary circulation into the lungs for gas exchange to ... An occlusion of the bronchial circulation does not cause infarction, but it can still occur in pulmonary embolism when the ... Bronchial arteries that carry oxygenated blood to the lungs Pulmonary capillaries, where there is exchange of water, oxygen, ... Because of the dual blood supply to the lungs from both the bronchial and the pulmonary circulation, this tissue is more ...
... and the pH of arterial blood are important in assessing pulmonary function. These data indicate the status of gas exchange ... A hand that remains white indicates either absence or occlusion of the ulnar artery, and radial artery puncture is ... Radial artery puncture is a medical procedure performed to obtain a sample of arterial blood for gas analysis. Also it is ... Most commonly, femoral and radial artery puncture is performed to obtain arterial blood sampling for gas analysis. The partial ...
The same study also found marked disturbances in gas exchange and acid-base equilibrium after injection with the toxin. Acute ... Das, Biswadeep; Sarkar, Chayna; Shankar, P. Ravi (2007-08-01). "Pretreatment with Sarafotoxin 6c Prior to Coronary Occlusion ... Left ventricular relaxation is impaired which may induce an elevation in pulmonary microvascular hydrostatic pressure which ... prior the coronary occlusion accident. That was achieved thanks to ability of SRTX-c to activate selected ETB receptors. In rat ...
In other species, the gills are too atrophied to allow for adequate gas exchange. When a lungfish is obtaining oxygen from its ... "Odontodes" on the palate and lower jaws develop in a series of rows to form a fan-shaped occlusion surface. These odontodes ... and the pulmonary arteries are closed. As the water passes through the gills, the lungfish uses a buccal pump. Flow through the ... These fins are thought to improve gas exchange around the fish's eggs in its nest. Through convergent evolution, lungfishes ...
gas exchange. *pulmonary gas pressures. *alveolar gas equation. *alveolar-arterial gradient. *hemoglobin ... during an occlusion at end-inspiration and positive end-expiratory pressure (PEEP) set by the ventilator".[22] ... The tracer gas is analyzed simultaneously with CO to determine the distribution of the test gas mixture. This test will pick up ... as in gas exchange calculation, the symbol TV or VT is used.). ... as in gas exchange calculation, the symbol TV or VT is used.). ...
Pulmonary vascular resistance-PVR > 240 dynes s cm−5 . Pulmonary artery occlusion pressure- PAOP < 15mmHg or transpulmonary ... increases cardiac output and improves gas exchange while lowering PAP and PVR. A subset of patients does not respond to any ... Finally, the pulmonary pathology of PPH is very similar to that of primary pulmonary hypertension. The muscular pulmonary ... Inhaled nitric oxide vasodilates, decreasing pulmonary arterial pressure (PAP) and pulmonary vascular resistance (PVR) without ...
... as in gas exchange calculation, the symbol TV or VT is used.). ... "Chapter 14.1 Pulmonary Function Testing". ACP Medicine. Decker ... during an occlusion at end-inspiration and positive end-expiratory pressure (PEEP) set by the ventilator".[22] ... The tracer gas is analyzed simultaneously with CO to determine the distribution of the test gas mixture. This test will pick up ... as in gas exchange calculation, the symbol TV or VT is used.). ... Alveolar gas volume. VL. Actual volume of the lung including ...
Much work since the 1960s focused on overcoming the gas exchange handicap of the membrane barrier, leading to the development ... Pulmonary thromboendarterectomy Pulmonary thrombectomy An Austrian-German physiologist Maximilian von Frey constructed an early ... therefore less likely to rupture the system if a sudden occlusion occurs on the high-pressure line system. The oxygenator is ... Pearson, D.T.; Holden M; Poslad S; Murray A; Waterhouse P. (1984). "A clinical comparison of the gas transfer characteristics ...
Secondary varicose veins are those developing as collateral pathways, typically after stenosis or occlusion of the deep veins, ... STS (branded Fibrovein in Australia) liquids can be mixed at varying concentrations of sclerosant and varying sclerosant/gas ... The complications include deep vein thrombosis (5.3%), pulmonary embolism (0.06%), and wound complications including infection ... nutritional exchange, and improve the microcirculation in legs affected by varicose veins. They also often provide relief from ...
In contrast, occlusion of the blood vessel by atherosclerotic plaque, by an embolised blood clot or a foreign body leads to ... In all arteries apart from the pulmonary artery, hemoglobin is highly saturated (95-100%) with oxygen. In all veins apart from ... and dissolved gases. Depending on the health of an individual, the blood viscosity can vary (i.e. anemia causing relatively ... which enable the actual exchange of water and chemicals between the blood and the tissues; and the veins, which carry blood ...
ABG testing is mainly used in pulmonology and critical-care medicine to determine gas exchange across the alveolar-capillary ... Whenever there is poor pulmonary ventilation, the carbon dioxide levels in the blood are expected to rise. This leads to a rise ... and has less risk for occlusion. The selection of which radial artery to draw from is based on the outcome of an Allen's test. ... An arterial-blood gas (ABG) test measures the amounts of arterial gases, such as oxygen and carbon dioxide). An ABG test ...
Rest in a cold environment will reduce inert gas exchange from skin, fat and muscle, whereas exercise will increase gas ... If the diver has a patent foramen ovale (or a shunt in the pulmonary circulation), bubbles may pass through it and bypass the ... after which there is a risk of occlusion of capillaries in whichever part of the body they end up in. Bubbles which are carried ... Inert gas continues to be taken up until the gas dissolved in the tissues is in a state of equilibrium with the gas in the ...
... placement of the tube to avoid right bronchial occlusion. David S. Sheridan was one of the manufacturers of the American ... or to administer other gases such as helium, nitric oxide, nitrous oxide, xenon, or certain volatile anesthetic agents such as ... for ventilating each lung independently-this is useful during pulmonary and other thoracic operations. Several types of ... into the trachea for the primary purpose of establishing and maintaining a patent airway and to ensure the adequate exchange of ...
In all veins apart from the pulmonary vein, the saturation of hemoglobin is about 75%.[citation needed] (The values are ... In contrast, occlusion of the blood vessel by atherosclerotic plaque, by an embolised blood clot or a foreign body leads to ... and dissolved gases. Depending on the health of an individual, the blood viscosity can vary (i.e. anemia causing relatively ... which enable the actual exchange of water and chemicals between the blood and the tissues; and the veins, which carry blood ...
gas exchange. *pulmonary gas pressures. *alveolar gas equation. *alveolar-arterial gradient. *hemoglobin ... and has less risk for occlusion. The selection of which radial artery to draw from is based on the outcome of an Allen's test. ... ABG testing is mainly used in pulmonology and critical-care medicine to determine gas exchange across the alveolar-capillary ... An arterial-blood gas (ABG) test measures the amounts of arterial gases, such as oxygen and carbon dioxide. An ABG test ...
Rest in a cold environment will reduce inert gas exchange from skin, fat and muscle, whereas exercise will increase gas ... If the diver has a patent foramen ovale or a shunt in the pulmonary circulation, bubbles may pass through it and bypass the ... after which there is a risk of occlusion of capillaries in whichever part of the body they end up in. Bubbles are also known to ... Inert gas continues to be taken up until the gas dissolved in the tissues is in a state of equilibrium with the gas in the ...
... of saline infusion for the maintenance of blood volume on pulmonary gas exchange during temporary abdominal aortic occlusion. ... Pulmonary gas exchange was impaired in the IRG-SS group as demonstrated by the increase of the alveolar-arterial oxygen ... of saline infusion for the maintenance of blood volume on pulmonary gas exchange during temporary abdominal aortic occlusion. ... We analyzed the effects of saline infusion for the maintenance of blood volume on pulmonary gas exchange in ischemia- ...
PAVMs provide anatomic right-to-left shunts, allowing systemic venous blood to bypass gas exchange and pulmonary capillary bed ... PAVM occlusion by embolization is the standard of care to reduce these risks. However, recent data demonstrate that currently ... Pulmonary arteriovenous malformations (PAVMs) are abnormal communications between the pulmonary arteries and veins, which ... Gill SS, Roddie ME, Shovlin CL, Jackson JEet al., 2015, Pulmonary arteriovenous malformations and their mimics., Clin Radiol, ...
Pulmonary gas exchange during induction of pulmonary edema in anesthetized dogs. J. appl. Physiol.19, 403 (1964).Google Scholar ... Rushmer, R. F., N. Watson, D. Harding, andD. Baker: Effects of acute coronary occlusion on performance of right and left ... Robin, E. D., C. E. Forkner, P. A. Bromberg, J. R. Croteau, andD. M. Travis: Aveolar gas exchange in clinical pulmonary ... Said, S. I., M. E. Avery, R. K. Davis, C. M. Banerjee, andM. El-Gohary: Pulmonary surface activity in induced pulmonary edema. ...
Importantly, this vasoconstriction had no role in ventilation-perfusion matching and optimization of gas exchange. Rho kinase ... 17 Capillary pressure was assessed by the double occlusion technique.17 ... Measurement of Vascular Pressures and Gas Exchange In Vivo. Rats were anesthetized, tracheostomised, paralyzed, and ... BMPR-II heterozygous mice have mild pulmonary hypertension and an impaired pulmonary vascular remodeling response to prolonged ...
Pulmonary Gas Exchange / physiology*. Swine. Tomography, Emission-Computed / methods. Xenon Radioisotopes / diagnostic use*. ... and 19.7 s in the left pulmonary artery occlusion group. Accordingly, computer simulations indicated a statistically ... We have studied the influence of impaired pulmonary gas exchange on the end-tidal and arterial xenon concentration curves in ... The results indicated that impairment of the pulmonary gas exchange caused a significant further delay in the arterial xenon ...
THEOPHYLLINE IMPROVES GAS-EXCHANGE DURING REST, EXERCISE, AND SLEEP IN SEVERE CHRONIC OBSTRUCTIVE PULMONARY-DISEASE. American ... ROLE OF CORTICAL AROUSAL IN THE VENTILATORY RESPONSE TO AIRWAY OCCLUSION DURING SLEEP. American Review of Respiratory Disease ... Mulloy, E; McNicholas, WT; ; (1996) Ventilation and gas exchange during sleep and exercise in severe COPD. Chest, 109 (2):387 ... Effects of supplemental oxygen on gas exchange during sleep in patients with severe obstructive lung disease. New England ...
... and gas exchange. Sixteen critically ill patients post-septic shock, with acute lung injury, were studied. Heart rate, arterial ... Pulmonary artery occlusion pressure, cardiac output, arterial blood gases, and dynamic compliance (Cdyn) were recorded pre-and ... In critically ill patients, MHI resulted in an improvement in lung mechanics and an improvement in gas exchange in patients ... Effect of Manual Hyperinflation on Hemodynamics, Gas Exchange, and Respiratory Mechanics in Ventilated Patients ...
... is a collection of gases outside of the normal air passages and inside the connective tissue of the peribronchovascular sheaths ... Its treatment of PIE is mainly preventive by using the minimum pressures or volume compatible with an acceptable gas exchange ... The principal therapies are lateral decubitus positioning, selective intubation, and occlusion of the contralateral bronchus, ... Pulmonary interstitial emphysema (PIE) is a collection of gases outside of the normal air passages and inside the connective ...
Enlargement of air spaces distal to the TERMINAL BRONCHIOLES where gas-exchange normally takes place. This is usually due to ... Pulmonary emphysema can be classified by the location and distribution of the lesions. ... 11/01/1993 - "These findings suggest that theophylline is effective in improving ventilatory and occlusion pressure responses ... impaired gas exchange are improved. ". 01/01/1999 - "Pulmonary ventilation and exercise ability in patients with pulmonary ...
After endoscopic removal of a mucous plug and secretions, the childs pulmonary gas exchange and respiratory rate improved, so ... Soon after the aspiration of fluids and the removal of the mucous plug, the childs pulmonary gas exchange and respiratory rate ... After endoscopic removal of a mucous plug and secretions, the childs pulmonary gas exchange and respiratory rate improved, so ... A 4-year-old child presenting morning onset of spontaneous tracheal rupture due to bronchial mucous plug occlusion during the ...
Respiratory mechanics and gas exchange in postobstructive pulmonary vasculopathy. Eur. Respir. J. 8, 202-208 (1995).. ... Bronchial arteries in the pig before and after permanent pulmonary artery occlusion. Invest. Radiol. 32, 218-224 (1997).. ... Because BEL was supplied with oxygenated rather than deoxygenated blood, we were unable to assess gas exchange due to a lack of ... 1B). The pulmonary artery, pulmonary vein, and trachea of the scaffold were cannulated as described (Fig. 1, B to D) (7). ...
An accumulation of liquid in the periphery of the lungs can induce airway occlusion and collapse, inhibiting gas exchange [1]. ... Pulmonary surfactant reduces the surface tension of the air-liquid interface, enabling the inspiration of gas to overcome ... inhibiting gas exchange. This paper proposes a mathematical multiscale model for the mechanical ventilation of a network of ... where air is forced into the lung to recruit airways and promote gas exchange [7,8]. However, this process can exert ...
Pulmonary and system factors of gas exchanges -- 14 ??Mechanical ventilation and lung perfusion -- 15 ??Monitoring respiratory ... Viscoelastic model and airway occlusion -- 8 ??Breathing pattern in acute ventilatory failure -- 9 ??Respiratory mechanics in ... Pulmonary mechanics beyond peripheral airways -- 21 ??Oscillatory mechanics -- 22 ??Experimental and clinical research to ... Face mask ventilation in acute exacerbations of chronic obstructive pulmonary disease -- 19 ??Proportional assist ventilation ( ...
... and most of it through pulmonary veins. Blood reaches from the pulmonary circulation into the lungs for gas exchange to ... An occlusion of the bronchial circulation does not cause infarction, but it can still occur in pulmonary embolism when the ... Bronchial arteries that carry oxygenated blood to the lungs Pulmonary capillaries, where there is exchange of water, oxygen, ... Because of the dual blood supply to the lungs from both the bronchial and the pulmonary circulation, this tissue is more ...
Measurements of hemodynamic, gas exchange, and pulmonary blood flow distribution data was performed 1 h (T1h) and 2 h (T2h) ... mean pulmonary arterial pressure, and pulmonary artery occlusion pressure of all animals were transduced (PVP, Kirschseeon/ ... Analyses of hemodynamic, gas exchange, and pulmonary blood flow data at TBaselineand TALIrevealed no differences between the ... Gas exchange, hemodynamic, and pulmonary blood flow data were assessed in supine position in all animals before (TBaseline) and ...
or=to0.6 persisting for >or=to24 hrs, and a pulmonary artery occlusion pressure of ... Hemodynamic, blood gas, and gas exchange measurements were performed at the following time points: a) baseline supine; b) after ... Response was accompanied by the same beneficial effects on gas exchange and Qva/Qt and absence of effect on hemodynamics as in ... There was no worsening of gas exchange or hemodynamics in nonresponders. After the initial trial, a total of 28 additional ...
The baseline demographic, clinical, laboratory, pulmonary function, and imaging data were compared between the 86 cases with ... worse pulmonary function (forced expiratory volume in one second/forced vital capacity [FEV1/FVC; p < 0.001], FEV1%pred [p < ... pulmonary function, and imaging features. FEV1 < 1 L and EI > 20% were independently associated with carbon dioxide retention ... with carbon dioxide retention is associated with a worsening clinical condition and the beginning of pulmonary ventilation ...
... to conduct standardised assessment of pulmonary gas exchange capability and respiratory mechanics. The preparation for mouse ... At the end of ventilation, blood gases were measured and respiratory mechanics determined using the end-inspiratory occlusion ... animals were sacrificed and exsanguinated to drain pulmonary vessels and minimise any potential impact of pulmonary vascular ... pulmonary oedema. Acute lung injury (ALI), or its more severe form acute respiratory distress syndrome (ARDS), continues to ...
The treatment was associated with improved neonatal gas exchange but had a detrimental effect on lung and fetal growth. ... Tracheal occlusion. Our team has spent nearly 20 years studying the effects of tracheal occlusion in CDH. We are currently ... We found that prenatal DM or sildenafil treatment increased pulmonary compliance and decreased pulmonary vascular resistance ... the effects of CDH occur early in gestation and can result in pulmonary hypoplasia and pulmonary hypertension, both of which ...
... optimizing the exchange of respiratory gases to maintain delivery of oxygen and the elimination of carbon dioxide ... Gaultier C, Perret L, Boule M, Buvry A, Girard F. Occlusion pressure and breathing pattern in healthy children. Respir Physiol ... Intra‐pulmonary shunt and pulmonary gas exchange during exercise in humans. J Physiol 561: 321‐329, 2004. ... Effect of acute increases in pulmonary vascular pressures on exercise pulmonary gas exchange. J Appl Physiol 100: 1910‐1917, ...
8442584 - Collateral ventilation and gas exchange during airway occlusion in the normal human lung.. ... Increasing reservoir height was associated with an increase in pulmonary arterial, pulmonary capillary, and pulmonary venous ... Pulmonary Circulation / drug effects. Rats. Rats, Sprague-Dawley. Spermine / analogs & derivatives, pharmacology. ... 12412924 - Effect of hydrostatic pulmonary edema on the interparabronchial septum of the chicken l.... 18699474 - Control of ...
... bronchoalveolar fluid and pulmonary tissue myeloperoxidase content and pulmonary gas exchange are assessed (2). Using this ... Moreover, if the knot is not tied down strong enough, inadvertent reperfusion due to imperfect occlusion of the coronary may ... which leads to non-cardiac pulmonary edema and subsequent impairment of pulmonary gas exchange (36). We have developed a murine ... Increased pulmonary artery pressures are associated with increased pressure in the lung vascular bed and pulmonary hypertension ...
... of saline infusion for the maintenance of blood volume on pulmonary gas exchange during temporary abdominal aortic occlusion ... Pulmonary gas exchange was impaired in the IRG-SS group as demonstrated by the increase of the alveolar-arterial oxygen ... Animals , Male , Dogs , Blood Volume , Blood Volume/drug effects , Pulmonary Gas Exchange/drug effects , Reperfusion Injury/ ... We analyzed the effects of saline infusion for the maintenance of blood volume on pulmonary gas exchange in ischemia- ...
... pulmonary embolism has become less common during recent years. ... gas exchange but also may be the cause of chronic pulmonary ... After this procedure, the inflow occlusion is stopped and the pulmonary incision is closed with the aid of a side-biting clamp ... Laboratory tests for pulmonary embolism concentrate mainly on blood gas analysis and D-dimers as typical markers of venous ... The autopsy revealed complete occlusion of practically all of the peripheral pulmonary vessels, which has the same haemodynamic ...
Tracheal occlusion represents an extreme mismatch of venous to arterial shunting of blood, namely perfusion with no ventilation ... 1. Gas exchange Gasses are exchanged between the atmosphere and the alveolar air, and gasses diffuse between the alveolar air ... Pulmonary gas exchange and disorders. Blood gas transport and disorders. Control of respiration. High altitude. Acid-base ... Diffusion-limitation of gas exchange is a condition where equilibration does not occur between the gas tension in the pulmonary ...
  • Several considerations underscore the importance of measurement of recovery of gas exchange variables in patients with COPD. (xhbv.com)
  • because patients with COPD have not shown significant cardiovascular or skeletal muscle adaptations to exercise training, and improved kinet-ics of recovery of gas exchange variables have been described in response to training, the period after exercise warrants further attention in this group of patients. (xhbv.com)
  • All gas exchange variables and HR recovered more slowly in the group with COPD (Table 2). (xhbv.com)
  • Finally, when we subjected Adora2b-deficient mice to endotoxin-induced pulmonary inflammation, we found that these mice experienced more severe inflammation, characterized by increased cell recruitment and increased fluid leakage into the airways. (jove.com)
  • Snoey ER: Severe metabolic alkalosis on pulmonary function tests are an impending surgical emergency to promptly manage apnea in infants, fitzgibbons LJ. (goswap.org)
  • However, in the case of illness, severe disordered breathing, disturbed gas exchange and interrupted sleep may occur. (egms.de)
  • Our team has spent nearly 20 years studying the effects of tracheal occlusion in CDH. (chop.edu)
  • Our team recently began studying the benefits of cyclical tracheal occlusion - in which the trachea is occluded in lambs for 48 hours with 1-hour release for a period of two weeks - as opposed to prolonged tracheal occlusion - in which the trachea is occluded for a period of weeks. (chop.edu)
  • Whereas the pulmonary artery catheter (PAC) is still widely used in guiding assessment and treatment of heart failure, controversy surrounding its safety and efficacy has prompted development of newer, less invasive techniques. (biomedcentral.com)
  • When doing a pulmonary artery catheter, what 5 things can you measure? (brainscape.com)
  • 4 In contrast, the assessment of home oxygen requirements for infants involves a combination of clinical assessment, oximetry and intermittent blood gas analyses 5 , 6 (levels of evidence, E3, E4 1 ). (mja.com.au)
  • Csf shows a clear understanding of the trigeminal nerve and muscle relax-ant effects, airway obstruction in rabbits causes diges-tive zymogen and lysosomal swelling, and induration around the time required for sustained attention and believes that the criteria for major organ system function despite low vc and tlc, but frc decreased about as a complication of pulmonary dysfunction. (raseproject.org)
  • DiGiovanni BF, Nawoczenski DA, Lintal ME, et al: Catheter related thrombosis in the brain parenchyma, or occluded (if the occlusion cannot be used as a Thyroid Blocking Agent in Radiation Emergencies. (goswap.org)
  • Nevertheless, there are only minor changes in blood gases in healthy subjects. (egms.de)
  • needs only specific FIO2 to maintain its normal blood gases. (slideshare.net)