The veins that return the oxygenated blood from the lungs to the left atrium of the heart.
Removal of tissue with electrical current delivered via electrodes positioned at the distal end of a catheter. Energy sources are commonly direct current (DC-shock) or alternating current at radiofrequencies (usually 750 kHz). The technique is used most often to ablate the AV junction and/or accessory pathways in order to interrupt AV conduction and produce AV block in the treatment of various tachyarrhythmias.
Abnormal cardiac rhythm that is characterized by rapid, uncoordinated firing of electrical impulses in the upper chambers of the heart (HEART ATRIA). In such case, blood cannot be effectively pumped into the lower chambers of the heart (HEART VENTRICLES). It is caused by abnormal impulse generation.
Pathological process resulting in the fibrous obstruction of the small- and medium-sized PULMONARY VEINS and PULMONARY HYPERTENSION. Veno-occlusion can arise from fibrous proliferation of the VASCULAR INTIMA and VASCULAR MEDIA; THROMBOSIS; or a combination of both.
The vessels carrying blood away from the capillary beds.
The chambers of the heart, to which the BLOOD returns from the circulation.
Methods to induce and measure electrical activities at specific sites in the heart to diagnose and treat problems with the heart's electrical system.
The vein which drains the foot and leg.
The use of freezing as a special surgical technique to destroy or excise tissue.
A short thick vein formed by union of the superior mesenteric vein and the splenic vein.
Enlarged and tortuous VEINS.
An impulse-conducting system composed of modified cardiac muscle, having the power of spontaneous rhythmicity and conduction more highly developed than the rest of the heart.
Recording of regional electrophysiological information by analysis of surface potentials to give a complete picture of the effects of the currents from the heart on the body surface. It has been applied to the diagnosis of old inferior myocardial infarction, localization of the bypass pathway in Wolff-Parkinson-White syndrome, recognition of ventricular hypertrophy, estimation of the size of a myocardial infarct, and the effects of different interventions designed to reduce infarct size. The limiting factor at present is the complexity of the recording and analysis, which requires 100 or more electrodes, sophisticated instrumentation, and dedicated personnel. (Braunwald, Heart Disease, 4th ed)
Abnormally rapid heartbeats originating from one or more automatic foci (nonsinus pacemakers) in the HEART ATRIUM but away from the SINOATRIAL NODE. Unlike the reentry mechanism, automatic tachycardia speeds up and slows down gradually. The episode is characterized by a HEART RATE between 135 to less than 200 beats per minute and lasting 30 seconds or longer.
The vein accompanying the femoral artery in the same sheath; it is a continuation of the popliteal vein and becomes the external iliac vein.
Catheters inserted into various locations within the heart for diagnostic or therapeutic purposes.
Veins in the neck which drain the brain, face, and neck into the brachiocephalic or subclavian veins.
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.
The venous trunk which returns blood from the head, neck, upper extremities and chest.
The return of a sign, symptom, or disease after a remission.
Radiographic visualization or recording of a vein after the injection of contrast medium.
Abnormally rapid heartbeats with sudden onset and cessation.
Production of an image when x-rays strike a fluorescent screen.
Veins which return blood from the intestines; the inferior mesenteric vein empties into the splenic vein, the superior mesenteric vein joins the splenic vein to form the portal vein.
An anomalous pulmonary venous return in which the right PULMONARY VEIN is not connected to the LEFT ATRIUM but to the INFERIOR VENA CAVA. Scimitar syndrome is named for the crescent- or Turkish sword-like shadow in the chest radiography and is often associated with hypoplasia of the right lung and right pulmonary artery, and dextroposition of the heart.
Short thick veins which return blood from the kidneys to the vena cava.
The condition of an anatomical structure's being constricted beyond normal dimensions.
Venous vessels in the umbilical cord. They carry oxygenated, nutrient-rich blood from the mother to the FETUS via the PLACENTA. In humans, there is normally one umbilical vein.
A vein on either side of the body which is formed by the union of the external and internal iliac veins and passes upward to join with its fellow of the opposite side to form the inferior vena cava.
The thin membrane-like muscular structure separating the right and the left upper chambers (HEART ATRIA) of a heart.
Agents used for the treatment or prevention of cardiac arrhythmias. They may affect the polarization-repolarization phase of the action potential, its excitability or refractoriness, or impulse conduction or membrane responsiveness within cardiac fibers. Anti-arrhythmia agents are often classed into four main groups according to their mechanism of action: sodium channel blockade, beta-adrenergic blockade, repolarization prolongation, or calcium channel blockade.
Surgical procedures conducted with the aid of computers. This is most frequently used in orthopedic and laparoscopic surgery for implant placement and instrument guidance. Image-guided surgery interactively combines prior CT scans or MRI images with real-time video.
Recording of the moment-to-moment electromotive forces of the HEART as projected onto various sites on the body's surface, delineated as a scalar function of time. The recording is monitored by a tracing on slow moving chart paper or by observing it on a cardioscope, which is a CATHODE RAY TUBE DISPLAY.
The removal or interruption of some part of the autonomic nervous system for therapeutic or research purposes.
A type of cardiac arrhythmia with premature atrial contractions or beats caused by signals originating from ectopic atrial sites. The ectopic signals may or may not conduct to the HEART VENTRICLES. Atrial premature complexes are characterized by premature P waves on ECG which are different in configuration from the P waves generated by the normal pacemaker complex in the SINOATRIAL NODE.
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)
Veins which drain the liver.
Ear-shaped appendage of either atrium of the heart. (Dorland, 28th ed)
The process of generating three-dimensional images by electronic, photographic, or other methods. For example, three-dimensional images can be generated by assembling multiple tomographic images with the aid of a computer, while photographic 3-D images (HOLOGRAPHY) can be made by exposing film to the interference pattern created when two laser light sources shine on an object.
The vein formed by the union of the anterior and posterior tibial veins; it courses through the popliteal space and becomes the femoral vein.
The hemodynamic and electrophysiological action of the HEART ATRIA.
Studies in which individuals or populations are followed to assess the outcome of exposures, procedures, or effects of a characteristic, e.g., occurrence of disease.
An involuntary or voluntary pause in breathing, sometimes accompanied by loss of consciousness.
The hemodynamic and electrophysiological action of the LEFT ATRIUM.
Ultrasonic recording of the size, motion, and composition of the heart and surrounding tissues using a transducer placed in the esophagus.
Rapid, irregular atrial contractions caused by a block of electrical impulse conduction in the right atrium and a reentrant wave front traveling up the inter-atrial septum and down the right atrial free wall or vice versa. Unlike ATRIAL FIBRILLATION which is caused by abnormal impulse generation, typical atrial flutter is caused by abnormal impulse conduction. As in atrial fibrillation, patients with atrial flutter cannot effectively pump blood into the lower chambers of the heart (HEART VENTRICLES).
Method in which prolonged electrocardiographic recordings are made on a portable tape recorder (Holter-type system) or solid-state device ("real-time" system), while the patient undergoes normal daily activities. It is useful in the diagnosis and management of intermittent cardiac arrhythmias and transient myocardial ischemia.
Regulation of the rate of contraction of the heart muscles by an artificial pacemaker.
A vein which arises from the right ascending lumbar vein or the vena cava, enters the thorax through the aortic orifice in the diaphragm, and terminates in the superior vena cava.
The electrical properties, characteristics of living organisms, and the processes of organisms or their parts that are involved in generating and responding to electrical charges.
A group of cardiac arrhythmias in which the cardiac contractions are not initiated at the SINOATRIAL NODE. They include both atrial and ventricular premature beats, and are also known as extra or ectopic heartbeats. Their frequency is increased in heart diseases.
Use or insertion of a tubular device into a duct, blood vessel, hollow organ, or body cavity for injecting or withdrawing fluids for diagnostic or therapeutic purposes. It differs from INTUBATION in that the tube here is used to restore or maintain patency in obstructions.
The continuation of the axillary vein which follows the subclavian artery and then joins the internal jugular vein to form the brachiocephalic vein.
The short wide vessel arising from the conus arteriosus of the right ventricle and conveying unaerated blood to the lungs.
Radiography of blood vessels after injection of a contrast medium.
Vein formed by the union (at the hilus of the spleen) of several small veins from the stomach, pancreas, spleen and mesentery.
Tomography using x-ray transmission and a computer algorithm to reconstruct the image.
Veins draining the cerebrum.
The small mass of modified cardiac muscle fibers located at the junction of the superior vena cava (VENA CAVA, SUPERIOR) and right atrium. Contraction impulses probably start in this node, spread over the atrium (HEART ATRIUM) and are then transmitted by the atrioventricular bundle (BUNDLE OF HIS) to the ventricle (HEART VENTRICLE).
The circulation of the BLOOD through the LUNGS.
Elements of limited time intervals, contributing to particular results or situations.
A transient dilatation of the lymphatic vessels.
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.
Developmental abnormalities in any portion of the ATRIAL SEPTUM resulting in abnormal communications between the two upper chambers of the heart. Classification of atrial septal defects is based on location of the communication and types of incomplete fusion of atrial septa with the ENDOCARDIAL CUSHIONS in the fetal heart. They include ostium primum, ostium secundum, sinus venosus, and coronary sinus defects.
A short vein that collects about two thirds of the venous blood from the MYOCARDIUM and drains into the RIGHT ATRIUM. Coronary sinus, normally located between the LEFT ATRIUM and LEFT VENTRICLE on the posterior surface of the heart, can serve as an anatomical reference for cardiac procedures.
Methods of creating machines and devices.
Computed tomography where there is continuous X-ray exposure to the patient while being transported in a spiral or helical pattern through the beam of irradiation. This provides improved three-dimensional contrast and spatial resolution compared to conventional computed tomography, where data is obtained and computed from individual sequential exposures.
The period of time following the triggering of an ACTION POTENTIAL when the CELL MEMBRANE has changed to an unexcitable state and is gradually restored to the resting (excitable) state. During the absolute refractory period no other stimulus can trigger a response. This is followed by the relative refractory period during which the cell gradually becomes more excitable and the stronger impulse that is required to illicit a response gradually lessens to that required during the resting state.
Non-invasive method of vascular imaging and determination of internal anatomy without injection of contrast media or radiation exposure. The technique is used especially in CEREBRAL ANGIOGRAPHY as well as for studies of other vascular structures.
Central retinal vein and its tributaries. It runs a short course within the optic nerve and then leaves and empties into the superior ophthalmic vein or cavernous sinus.
A congenital heart defect characterized by the narrowing or complete absence of the opening between the RIGHT VENTRICLE and the PULMONARY ARTERY. Lacking a normal PULMONARY VALVE, unoxygenated blood in the right ventricle can not be effectively pumped into the lung for oxygenation. Clinical features include rapid breathing, CYANOSIS, right ventricle atrophy, and abnormal heart sounds (HEART MURMURS).
Large veins on either side of the root of the neck formed by the junction of the internal jugular and subclavian veins. They drain blood from the head, neck, and upper extremities, and unite to form the superior vena cava.
Timing the acquisition of imaging data to specific points in the breathing cycle to minimize image blurring and other motion artifacts. The images are used diagnostically and also interventionally to coordinate radiation treatment beam on/off cycles to protect healthy tissues when they move into the beam field during different times in the breathing cycle.
Clusters of neurons and their processes in the autonomic nervous system. In the autonomic ganglia, the preganglionic fibers from the central nervous system synapse onto the neurons whose axons are the postganglionic fibers innervating target organs. The ganglia also contain intrinsic neurons and supporting cells and preganglionic fibers passing through to other ganglia.
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.
The inferior and superior venae cavae.
Types of spiral computed tomography technology in which multiple slices of data are acquired simultaneously improving the resolution over single slice acquisition technology.
Studies to determine the advantages or disadvantages, practicability, or capability of accomplishing a projected plan, study, or project.
A conical fibro-serous sac surrounding the HEART and the roots of the great vessels (AORTA; VENAE CAVAE; PULMONARY ARTERY). Pericardium consists of two sacs: the outer fibrous pericardium and the inner serous pericardium. The latter consists of an outer parietal layer facing the fibrous pericardium, and an inner visceral layer (epicardium) resting next to the heart, and a pericardial cavity between these two layers.
The venous trunk of the upper limb; a continuation of the basilar and brachial veins running from the lower border of the teres major muscle to the outer border of the first rib where it becomes the subclavian vein.
A spectrum of congenital, inherited, or acquired abnormalities in BLOOD VESSELS that can adversely affect the normal blood flow in ARTERIES or VEINS. Most are congenital defects such as abnormal communications between blood vessels (fistula), shunting of arterial blood directly into veins bypassing the CAPILLARIES (arteriovenous malformations), formation of large dilated blood blood-filled vessels (cavernous angioma), and swollen capillaries (capillary telangiectases). In rare cases, vascular malformations can result from trauma or diseases.
Ultrasonic recording of the size, motion, and composition of the heart and surrounding tissues. The standard approach is transthoracic.

Transcatheter occlusion of a post-Fontan residual hepatic vein to pulmonary venous atrium communication using the Amplatzer septal occluder. (1/1323)

A residual hepatic vein to left atrial communication may result in progressive cyanosis after the Fontan procedure. This problem has usually been treated surgically by ligation or re-inclusion of the residual hepatic vein in the Fontan circulation. Previous attempts at transcatheter closure of such veins have been unsuccessful. An Amplatzer septal occluder was successfully used for transcatheter closure of a post-Fontan hepatic vein to pulmonary venous atrium fistula in an 8 year old boy.  (+info)

Effects of respiratory cycle on pulmonary venous flow and cardiac cycle on pulmonary venous diameter of dogs: a transesophageal echocardiography study. (2/1323)

We investigated 12 anesthetized normal dogs using transesophageal echocardiography to understand the effects of respiration on the pulmonary venous flow. Additionally, we observed whether the diameter of the pulmonary vein changes with the heart beat. The pulsed Doppler wave form of pulmonary venous flow predominantly demonstrated two backward flows, with one peak occurring during ventricular systole and another during ventricular diastole. Sometimes a small forward flow occurred during left atrial contraction. In comparison with expiration, the peak velocity and velocity-time integral of the flow wave under inspiration occurred during both systole and diastole were significantly smaller. The diameter of the pulmonary vein decreased during left atrial contraction and increased during left ventricular systole and diastole.  (+info)

Site of functional bronchopulmonary anastomoses in sheep. (3/1323)

The location of bronchopulmonary anastomoses has long been a topic of discussion, and pre-, post-, and capillary sites have all been demonstrated in postmortem examinations. However, there have been few studies that have provided insight into the patency and function of these anastomoses in the intact lung. To identify these functional sites where the bronchial circulation anastomoses with the pulmonary circulation, we studied sheep lungs in situ serial sectioned with high-resolution computed tomography (CT). Differences in radiodensities of blood, air, and nonionic contrast medium were used to differentiate and localize airways and vessels and to identify the effluent from the bronchial circulation. After an initial series of scans to identify the pulmonary arteries and veins adjacent to airways 2-12 mm in diameter, contrast material was infused into the bronchial artery. In three sheep, the major accumulation of contrast medium was found in pulmonary veins. In one of the sheep, a comparable number of pulmonary arteries and veins contained contrast medium. Serial histologic sections were able to identify small bronchial venules lying within subepithelial bronchial folds that drain directly into pulmonary veins. These results using serial CT and histologic images suggest that drainage from the intraparenchymal bronchial vasculature is predominantly into postcapillary pulmonary vessels.  (+info)

Pulmonary venous flow in hypertrophic cardiomyopathy as assessed by the transoesophageal approach. The additive value of pulmonary venous flow and left atrial size variables in estimating the mitral inflow pattern in hypertrophic cardiomyopathy. (4/1323)

AIMS: This study was conducted to assess the characteristics of the pattern of pulmonary venous flow and to document the interaction of this flow and left atrial function with the pattern of mitral inflow in hypertrophic cardiomyopathy. METHODS AND RESULTS: Pulmonary venous and mitral flows were evaluated by the transoesophageal approach in 80 patients with hypertrophic cardiomyopathy. Left atrial size and function were measured by the transthoracic approach. Their values were compared with those obtained from 35 normal controls. Twelve patients showed significant (> 2+) mitral regurgitation. As a group, hypertrophic cardiomyopathy patients showed increased atrial reversal flow and longer deceleration time of the diastolic wave, but a wide variability of pulmonary venous flow patterns were observed. Thirty patients (37.5%) had pseudonormal mitral flow patterns. Stepwise multilinear regression analysis identified the ratio of systolic to diastolic pulmonary venous flow velocity, the ratio of velocity-time integrals of both flow waves at atrial contraction, the left atrial minimal volume and the systolic fraction as independent predictive variables of the mitral E/A wave velocity ratio (r = 0.82). By logistic regression, the former three variables were selected as independent predictive covariates of a pseudonormal mitral flow pattern (sensitivity: 83%, specificity: 90%). The ratio of velocity-time integrals of both atrial waves was the most important predictive variable in both analyses. CONCLUSIONS: The observed variability in the configuration of pulmonary venous flow velocity waveform is related to what occurs in transmitral flow in patients with hypertrophic cardiomyopathy. Significant mitral regurgitation is not an independent correlate of pseudonormal mitral inflow patterns in these patients. Our results further emphasize the complementary, additive value of the pulmonary venous flow velocity pattern and left atrial size in the interpretation of the mitral flow velocity pattern, and indirectly suggest the underlying increased left ventricular filling pressures of patients with hypertrophic cardiomyopathy and pseudonormal mitral flow patterns.  (+info)

The functional anatomy of the bronchial circulation of the domestic fowl. (5/1323)

The bronchial circulation was studied in 25 adult domestic fowls. The right and left bronchial arteries originated caudal to the syrinx from a bronchoesophageal artery which is a branch of the right common carotid artery. Each bronchial artery ramified on the wall of the extrapulmonary part of the corresponding primary bronchus and finally anastomosed directly with a branch of the pulmonary artery at the hilus of the lung. Thr bronchial artery did not accompany the intrapulmonary part of the primary bronchus. The branches of each bronchial artery formed an anastomosing network on the wall of the extrapulmonary part of the primary bronchus. The calibre of the bronchial artery at its anastomosis with the branch of the pulmonary artery was greater than at its origin from the bronchoesophageal artery. Intravenous injections of Lycopodium spores indicated that the blood flows from the pulmonary artery into the bronchial artery. Small bronchial veins drained the extrapulmonary part of the primary bronchus into the pulmonary vein and the oesophageal veins. The intrapulmonary part of the primary bronchus was supplied by branches of the pulmonary artery and drained by tributaries of the pulmonary vein. The blood supply to the primary bronchus could constitute a shunt capable of passing blood from the pulmonary artery into the pulmonary vein without going through the exchange tissue. The parabronchial (atrial) muscles received a blood supply directly from the exchange tissue via septal venules which formed a network underneath the muscle bundles, without actually penetrating between the muscle cells. These venules drained into atrial veins which were tributaries of the pulmonary vein. The atrial muscles probably also received oxygen by direct diffusion from the parabronchial lumen. The pleura was supplied by the oesophageal branches of the bronchoesophageal artery, and by small twigs from the internal thoracic and intercostal arteries.  (+info)

Defibrillation-guided radiofrequency ablation of atrial fibrillation secondary to an atrial focus. (6/1323)

OBJECTIVES: Our aim was to evaluate a potential focal source of atrial fibrillation (AF) by unmasking spontaneous early reinitiation of AF after transvenous atrial defibrillation (TADF), and to describe a method of using repeated TADF to map and ablate the focus. BACKGROUND: Atrial fibrillation may develop secondary to a rapidly discharging atrial focus that the atria cannot follow synchronously, with suppression of the focus once AF establishes. Focus mapping and radiofrequency (RF) ablation may be curative but is limited if the patient is in AF or if the focus is quiescent. Early reinitiation of AF has been observed following defibrillation, which might have a focal mechanism. METHODS: We performed TADF in patients with drug-refractory lone AF using electrodes in the right atrium (RA) and the coronary sinus. When reproducible early reinitiation of AF within 2 min after TADF was observed that exhibited a potential focal mechanism, both mapping and RF ablation were performed to suppress AF reinitiation. Clinical and ambulatory ECG monitoring was used to assess AF recurrence. RESULTS: A total of 44 lone AF patients (40 men, 4 women; 32 persistent, 12 paroxysmal AF) with a mean age of 58+/-13 years underwent TADF. Sixteen patients had early reinitiation of AF after TADF, nine (20%; 5 paroxysmal) exhibited a pattern of focal reinitiation. Earliest atrial activation was mapped to the right superior (n = 4) and the left superior (n = 3) pulmonary vein, just inside the orifice, in the seven patients who underwent further study. At the onset of AF reinitiation, the site of earliest activation was 86+/-38 ms ahead of the RA reference electrogram. The atrial activities from this site were fragmented and exhibited progressive cycle-length shortening with decremental conduction to the rest of the atrium until AF reinitiated. Radiofrequency ablation at the earliest activation site resulted in suppression of AF reinitiation despite pace-inducibility. Improved clinical outcome was observed over 8+/-4 months' follow-up. CONCLUSIONS: Transvenous atrial defibrillation can help to unmask, map, and ablate a potential atrial focus in patients with paroxysmal and persistent AF. A consistent atrial focus is the cause of early reinitiation of AF in 20% of patients with lone AF, and these patients may benefit from this technique.  (+info)

Prostanoid receptors involved in the relaxation of human pulmonary vessels. (7/1323)

1. To characterize the prostanoid receptors on human pulmonary smooth muscle involved in vasodilatations, isolated arteries and veins were contracted with norepinephrine (10 microM) and vessels were subsequently challenged with different prostanoid-receptor agonists in the absence or presence of selective antagonists. 2. Prostaglandin D2 (PGD2) and the selective DP-receptor agonist, BW245C, induced relaxations in the contracted human pulmonary venous preparations. The pD2 values were: 6.88+/-0.11 (n=17) and 7.31+/-0.12 (n=5), respectively. The relaxant responses induced by PGD2 were reduced by the selective DP-receptor antagonist, BWA868C, and the estimated pA2 value was 7.84+/-0.16 (n=4). PGD2 and BW245C did not relax contracted human pulmonary arteries. 3. The selective IP-receptor agonists, iloprost and cicaprost, both induced relaxations in the contracted human vascular preparations. The pD2 values for iloprost were: 7.84+/-0.08 (n=6) and 8.25+/-0.06 (n=4) and for cicaprost: 8.06+/-0.12 (n=5) and 8.11+/-0.09 (n=5) in arteries and veins respectively. 4. Prostaglandin E2 (PGE2) and the EP2/EP3-receptor agonist, misoprostol, partially relaxed the contracted venous preparations and the pD2 values were: 8.10+/-0.15 (n=15) and 6.24+/-0.33 (n=3), respectively. These relaxations suggest the presence of an EP receptor in the human pulmonary veins. The contracted human pulmonary arteries did not relax when challenged with PGE2. 5. In human pulmonary venous preparations, the PGE2-induced relaxations were neither modified by treatment with TP/EP4-receptor antagonist, AH23848B (10 and 30 microM, n=6), nor by the DP/EP1/EP2-receptor antagonist, AH6809 (3 microM, n=6). 6. These data suggest that the relaxation induced by prostanoids involved DP-, IP-receptors and to a lesser extent an EP-receptor on human pulmonary venous smooth muscle. In contrast, only the IP-receptor is involved in the prostanoid induced relaxations on human pulmonary arterial smooth muscle.  (+info)

Fetal pulmonary venous flow into the left atrium relative to diastolic and systolic cardiac time intervals. (8/1323)

OBJECTIVE: To establish the nature and gestational age dependency of the pulmonary venous flow velocity pattern into the left atrium relative to systolic and diastolic phases of the cardiac cycle. DESIGN: This was a cross-sectional study of Doppler measurements of fetal pulmonary venous inflow velocities, which were correlated with simultaneous recordings of transmitral and aortic flow velocity waveforms based on an equal cardiac cycle length (+/- 5%). RESULTS: Successful recordings were obtained in 28 out of 60 (47%) normal singleton pregnancies at 20-36 weeks of gestation. Reproducibility of waveform analysis of the various phases of the cardiac cycle was satisfactory, within-patient variance ranging between 1.7% and 6.5%. A statistically significant increase (p < 0.05) in pulmonary venous time average velocity and velocity integral with advancing gestational age was established. A statistically significant increase (p < 0.05) of the pulmonary flow velocity integral was also found when related to each of the systolic and diastolic segments of the cardiac cycle, with the exception of isovolemic relaxation time. The duration of each of the diastolic and systolic segments of the cardiac cycle, as well as the pulmonary venous velocity integral expressed as a percentage of the cardiac cycle, remained constant with advancing gestational age. CONCLUSIONS: The second half of pregnancy is characterized by pulmonary venous inflow into the left atrium throughout the cardiac cycle. Pulmonary venous inflow into the left atrium occurs predominantly during the filling and ejection phases of the cardiac cycle. Absolute cardiac diastolic and systolic time intervals as well as the percentage distribution of pulmonary venous flow velocity integrals between these cardiac time intervals remain unchanged with advancing gestational age.  (+info)

There are several risk factors for developing AF, including:

1. Age: The risk of developing AF increases with age, with the majority of cases occurring in people over the age of 65.
2. Hypertension (high blood pressure): High blood pressure can damage the heart and increase the risk of developing AF.
3. Heart disease: People with heart disease, such as coronary artery disease or heart failure, are at higher risk of developing AF.
4. Diabetes mellitus: Diabetes can increase the risk of developing AF.
5. Sleep apnea: Sleep apnea can increase the risk of developing AF.
6. Certain medications: Certain medications, such as thyroid medications and asthma medications, can increase the risk of developing AF.
7. Alcohol consumption: Excessive alcohol consumption has been linked to an increased risk of developing AF.
8. Smoking: Smoking is a risk factor for many cardiovascular conditions, including AF.
9. Obesity: Obesity is a risk factor for many cardiovascular conditions, including AF.

Symptoms of AF can include:

1. Palpitations (rapid or irregular heartbeat)
2. Shortness of breath
3. Fatigue
4. Dizziness or lightheadedness
5. Chest pain or discomfort

AF can be diagnosed with the help of several tests, including:

1. Electrocardiogram (ECG): This is a non-invasive test that measures the electrical activity of the heart.
2. Holter monitor: This is a portable device that records the heart's rhythm over a 24-hour period.
3. Event monitor: This is a portable device that records the heart's rhythm over a longer period of time, usually 1-2 weeks.
4. Echocardiogram: This is an imaging test that uses sound waves to create pictures of the heart.
5. Cardiac MRI: This is an imaging test that uses magnetic fields and radio waves to create detailed pictures of the heart.

Treatment for AF depends on the underlying cause and may include medications, such as:

1. Beta blockers: These medications slow the heart rate and reduce the force of the heart's contractions.
2. Antiarrhythmics: These medications help regulate the heart's rhythm.
3. Blood thinners: These medications prevent blood clots from forming and can help reduce the risk of stroke.
4. Calcium channel blockers: These medications slow the entry of calcium into the heart muscle cells, which can help slow the heart rate and reduce the force of the heart's contractions.

In some cases, catheter ablation may be recommended to destroy the abnormal electrical pathway causing AF. This is a minimally invasive procedure that involves inserting a catheter through a vein in the leg and guiding it to the heart using x-ray imaging. Once the catheter is in place, energy is applied to the abnormal electrical pathway to destroy it and restore a normal heart rhythm.

It's important to note that AF can increase the risk of stroke, so anticoagulation therapy may be recommended to reduce this risk. This can include medications such as warfarin or aspirin, or in some cases, implantable devices such as a left atrial appendage closure device.

In conclusion, atrial fibrillation is a common heart rhythm disorder that can increase the risk of stroke and heart failure. Treatment options depend on the underlying cause and may include medications, cardioversion, catheter ablation, or anticoagulation therapy. It's important to work closely with a healthcare provider to determine the best course of treatment for AF.

The exact cause of PVOD is unknown, but it is believed to be related to inflammation and scarring in the lungs. The disease can be associated with other conditions such as systemic sclerosis (SSc), rheumatoid arthritis (RA), and graft-versus-host disease (GVHD).

Symptoms of PVOD include shortness of breath, fatigue, chest pain, and coughing up blood. The disease can be diagnosed through a combination of physical examination, imaging tests such as CT or MRI scans, and lung biopsy.

Treatment options for PVOD are limited, and the primary goal of therapy is to manage symptoms and slow the progression of the disease. Medications such as calcium channel blockers, anticoagulants, and diuretics may be used to manage high blood pressure in the lungs and reduce fluid buildup in the body. Lung transplantation may be considered for patients with advanced stages of the disease.

Prognosis for PVOD is poor, with a five-year survival rate of approximately 50%. The disease can progress rapidly, and early diagnosis and aggressive treatment are essential to improve outcomes.

In summary, Pulmonary Veno-Occlusive Disease (PVOD) is a rare and severe lung disorder characterized by the obstruction of veins in the lungs, which can lead to high blood pressure, heart failure, and death. While treatment options are limited, early diagnosis and aggressive management can improve outcomes for patients with this condition.

In TEA, the abnormal electrical focus in the atria can be caused by various factors, including damage to the heart tissue due to coronary artery disease, high blood pressure, or other underlying conditions. The condition can be diagnosed using electrocardiography (ECG) and can be treated with medications such as beta blockers or antiarrhythmics, or in some cases, catheter ablation may be necessary to destroy the abnormal electrical focus in the atria.

The term "ectopic" refers to the fact that the abnormal electrical activity originates from an unusual location within the heart, specifically in the atria near the cavo-tricuspid isthmus. The term "tachycardia" refers to the rapid and irregular heartbeat.

In summary, Tachycardia, Ectopic Atrial (TEA) is a type of arrhythmia that originates from an abnormal electrical focus in the atria near the cavo-tricuspid isthmus, leading to rapid and irregular atrial contractions and potentially causing symptoms such as palpitations and shortness of breath.

Recurrence can also refer to the re-emergence of symptoms in a previously treated condition, such as a chronic pain condition that returns after a period of remission.

In medical research, recurrence is often studied to understand the underlying causes of disease progression and to develop new treatments and interventions to prevent or delay its return.

The symptoms of PAT can vary in severity and may include:

* Rapid heartbeats (tachycardia)
* Palpitations or pounding sensation in the chest
* Shortness of breath (dyspnea)
* Dizziness or lightheadedness
* Chest pain or discomfort

During an episode of PAT, the heart rate may exceed 100 beats per minute and can reach as high as 200-300 beats per minute. The episodes can last from a few seconds to several hours and may occur randomly throughout the day.

PAT is often diagnosed through a physical examination, electrocardiogram (ECG), or holter monitor. Treatment options for PAT may include medications to control heart rate and rhythm, lifestyle changes such as avoiding triggers, and in severe cases, implantable devices such as pacemakers or cardioverter-defibrillators.

In summary, paroxysmal tachycardia is a type of arrhythmia that is characterized by rapid heartbeats that come and go in episodes, and it can be triggered by various factors. It can cause symptoms such as palpitations, shortness of breath, and chest pain, and may require treatment with medications or implantable devices.

Scimitar syndrome can be diagnosed through a combination of clinical evaluation, ultrasound imaging, and genetic testing. Treatment for the condition typically involves monitoring the child's growth and development, as well as managing any associated health problems such as portal hypertension or liver failure. In some cases, a liver transplant may be necessary.

The prognosis for Scimitar syndrome varies depending on the severity of the condition and the presence of any other underlying health issues. With appropriate medical management, many individuals with Scimitar syndrome can lead active and productive lives into adulthood. However, the condition can be life-threatening if left untreated or if complications arise.

Some examples of pathologic constrictions include:

1. Stenosis: A narrowing or constriction of a blood vessel or other tubular structure, often caused by the buildup of plaque or scar tissue.
2. Asthma: A condition characterized by inflammation and constriction of the airways, which can make breathing difficult.
3. Esophageal stricture: A narrowing of the esophagus that can cause difficulty swallowing.
4. Gastric ring constriction: A narrowing of the stomach caused by a band of tissue that forms in the upper part of the stomach.
5. Anal fissure: A tear in the lining of the anus that can cause pain and difficulty passing stools.

Pathologic constrictions can be caused by a variety of factors, including inflammation, infection, injury, or genetic disorders. They can be diagnosed through imaging tests such as X-rays, CT scans, or endoscopies, and may require surgical treatment to relieve symptoms and improve function.

APCs can be diagnosed with an electrocardiogram (ECG), which records the electrical activity of the heart. The ECG will show a premature beat in the atria, followed by a normal heartbeat. APCs can also be detected using other tests such as Holter monitor or event monitor, which record the heart's rhythm over a longer period of time.

Treatment for APCs depends on the underlying cause and can range from medications to control the heart rate, cardioversion to restore a normal heart rhythm, or catheter ablation to destroy the abnormal electrical pathway causing the premature beats. In some cases, no treatment may be necessary if the APCs are benign and not causing any symptoms.

Symptoms of atrial flutter may include palpitations, shortness of breath, fatigue, and dizziness. In some cases, atrial flutter can lead to more serious complications such as stroke or heart failure if left untreated. Diagnosis is typically made through a combination of physical examination, electrocardiography (ECG), and other tests such as echocardiography or stress testing.

Treatment for atrial flutter depends on the underlying cause and may include medications to control the heart rate or restore a normal heart rhythm, cardioversion (a procedure that uses electrical shock to restore a normal heart rhythm), or in some cases, catheter ablation (a minimally invasive procedure that destroys the abnormal electrical pathway in the heart).

There are several types of premature complexes, including:

1. Premature atrial complex (PAC): An extra heartbeat that originates in the atria, usually due to a rapid or irregular heart rate.
2. Premature ventricular complex (PVC): An extra heartbeat that originates in the ventricles, which can be more serious than PACs and may require further evaluation.
3. Premature nodal rhythm: A condition where the AV node (the electrical pathway between the atria and ventricles) fires prematurely, causing a rapid heart rate.

PCCs can be diagnosed using electrocardiography (ECG), which records the electrical activity of the heart. Treatment options for PCCs depend on the underlying cause and may include medications to regulate the heart rhythm, cardioversion (a procedure that restores a normal heart rhythm using electrical shock), or catheter ablation (a minimally invasive procedure that destroys the abnormal electrical pathway).

There are several causes of lymphangiectasis, including:

1. Genetic mutations
2. Infections such as filariasis or tularemia
3. Inflammatory conditions such as rheumatoid arthritis or sarcoidosis
4. Trauma to the lymph vessels
5. Tumors that block the flow of lymph fluid
6. Radiation therapy or chemotherapy
7. Infectious diseases such as HIV/AIDS
8. Vitamin deficiencies such as vitamin C or B12 deficiency

The diagnosis of lymphangiectasis is based on a combination of physical examination, medical history, and diagnostic tests such as imaging studies (e.g., CT or MRI scans), lymphoscintigraphy, and biopsy.

Treatment for lymphangiectasis depends on the underlying cause and may include:

1. Antibiotics to treat infections
2. Pain management medications
3. Anti-inflammatory drugs to reduce swelling
4. Compression garments or bandaging to reduce swelling
5. Elevation of the affected limb to reduce swelling
6. Surgery to remove blockages or repair damaged lymph vessels
7. Physical therapy to improve lymphatic drainage
8. Medications to treat underlying conditions such as rheumatoid arthritis or HIV/AIDS

Prognosis for patients with lymphangiectasis varies depending on the underlying cause and severity of the condition. In general, early diagnosis and treatment can improve outcomes and reduce the risk of complications such as infection, fibrosis, and lymphedema.

There are several types of tachycardia, including:

1. Sinus tachycardia: This is the most common type and is caused by an increase in the rate of the normal sinus node. It is often seen in response to physical activity or stress.
2. Atrial fibrillation: This is a type of arrhythmia where the heart's upper chambers (atria) contract irregularly and rapidly, leading to a rapid heart rate.
3. Ventricular tachycardia: This is a type of arrhythmia where the heart's lower chambers (ventricles) contract rapidly, often with a rate above 100 bpm.
4. Premature ventricular contractions (PVCs): These are early or extra beats that originate in the ventricles, causing a rapid heart rate.

Tachycardia can cause a range of symptoms, including palpitations, shortness of breath, chest pain, and dizziness. In severe cases, it can lead to cardiac arrhythmias, heart failure, and even death.

Diagnosis of tachycardia typically involves a physical examination, electrocardiogram (ECG), and other tests such as stress tests or echocardiography. Treatment options vary depending on the underlying cause, but may include medications to regulate the heart rate, cardioversion to restore a normal heart rhythm, or in severe cases, implantation of a pacemaker or defibrillator.

Symptoms of pulmonary atresia may include:

* Blue tint to the skin (cyanosis)
* Rapid breathing
* Shortness of breath
* Fatigue
* Difficulty feeding in infants

Diagnosis is typically made through echocardiography, electrocardiography, or cardiac catheterization. Treatment involves a series of surgeries to repair or replace the valve and may include:

* Balloon atrial septostomy to create a hole in the wall between the atria to allow blood to flow from the right atrium to the left atrium and lungs
* Intracardiac repair, where a surgical patch is used to close the atrial septal defect and repair or replace the pulmonary valve
* Heart transplantation in severe cases

Prognosis for pulmonary atresia depends on the severity of the condition and the presence of other cardiac defects. With appropriate treatment, many individuals with pulmonary atresia can lead active and productive lives.

There are several types of vascular malformations, including:

1. Arteriovenous malformations (AVMs): These are abnormal connections between arteries and veins that can cause bleeding, seizures, and other neurological symptoms.
2. Capillary malformations (CMs): These are abnormalities in the tiny blood vessels that can cause redness, swelling, and other skin changes.
3. Venous malformations (VMs): These are abnormalities in the veins that can cause swelling, pain, and other symptoms.
4. Lymphatic malformations: These are abnormalities in the lymphatic system that can cause swelling, pain, and other symptoms.

Vascular malformations can be diagnosed using a variety of imaging tests, such as ultrasound, CT scans, and MRI scans. Treatment options vary depending on the type and location of the malformation, and may include surgery, embolization, or sclerotherapy.

In summary, vascular malformations are abnormalities in the blood vessels that can cause a range of symptoms and can be diagnosed using imaging tests. Treatment options vary depending on the type and location of the malformation.

The pulmonary veins are the veins that transfer oxygenated blood from the lungs to the heart. The largest pulmonary veins are ... The pulmonary veins are part of the pulmonary circulation. There are four main pulmonary veins, two from each lung - an ... The two left lobar veins may be united as a single pulmonary vein in about 25% of people; the two right veins may be united in ... The main pulmonary veins receive blood from three or four feeding veins in each lung, and drain into the left atrium. The ...
In some people, pulmonary vein stenosis occurs after pulmonary vein ablation for the treatment of atrial fibrillation. Some ... Pulmonary vein stenosis is a rare cardiovascular disorder. It is recognized as being the stenosis of one or more of the four ... Chen, Ming (April 1, 2014). "Clinical and Genetic Features of Pulmonary Vein Stenosis". Journal of the American College of ... Laar, Ingrid (July 4, 2009). "First locus for primary pulmonary vein stenosis maps to chromosome 2q". European Heart Journal. ...
"Pulmonary vein isolation". Mayo Clinic. Retrieved 22 August 2022. (All articles with unsourced statements, Articles with ... usually either in the femoral vein, internal jugular vein, or subclavian vein. The catheters are then advanced towards the ... Keane, D; Ruskin, J (Fall 2002). "Pulmonary vein isolation for atrial fibrillation". Rev Cardiovasc Med. 3 (4): 167-175. PMID ... Pulmonary vein isolation has been found to be more effective than optimized antiarrhythmic drug therapy for improving quality ...
intrapulmonary sequestration drains via pulmonary veins, extra pulmonary sequestration drains to the IVC) Walker, Christopher M ... Venous drainage is usually to the left atrium via pulmonary veins establishing a left to left shunt. Abnormal connections to ... Venous drainage is usually via the pulmonary veins. Foregut communication is very rare, and associated anomalies are uncommon. ... It is widely believed that extralobar pulmonary sequestrations are a result of prenatal pulmonary malformation while intralobar ...
... pulmonary veins, and lymphatics. The parietal pleura (from Latin: paries, lit. 'wall') lines the inside of the thoracic cavity ... It joins the visceral pleura at the pericardial base of the pulmonary hilum and pulmonary ligament as a smooth but acutely ... The pulmonary pleurae (sing. pleura) are the two opposing layers of serous membrane overlying the lungs and the inside of the ... The visceral pleura is supplied by the capillaries that supply the lung surface (from both the pulmonary circulation and the ...
The collapse of the pulmonary veins. J.L. Duomarco; R. Rimini; C.E. Giambruno; Acta Physiologica Latino Americana, 1957, VII, p ... The notion that veins do not behave as rigid tubes but as eminently collapsible tubes suffering from the process of collapse in ... Energy and hydraulic gradients along systemic veins J.l. Duomarco R. Rimini The American Journal of Physiology Vol 178. No. 2 ... as are the cava veins..." "La Regulación del Retorno Venoso". Conferencia por José L. Duomarco en la Mesa Redonda sobre " ...
These anticoagulants are used to treat patients with deep-vein thrombosis (DVT), pulmonary embolism (PE) and to prevent emboli ... Di Nisio, Marcello; van Es, Nick; Büller, Harry R (December 2016). "Deep vein thrombosis and pulmonary embolism". The Lancet. ... can lead to pulmonary embolism Ischemic stroke Hypercoagulable states (e.g., Factor V Leiden) - can lead to deep vein ... "A meta-analysis of bed rest versus early ambulation in the management of pulmonary embolism, deep vein thrombosis, or both". ...
van Beek, Edwin J. R.; Büller, Harry R.; Oudkerk, Matthijs (2009). Deep Vein Thrombosis and Pulmonary Embolism. John Wiley and ... Peabody's sign is a clinical sign which may be found in patients with deep vein thrombosis (DVT). The sign is positive when ...
Constrictive Pericarditis with Obstruction of Pulmonary Veins, in 1948. He had surgical training residencies at Johns Hopkins ... Constrictive pericarditis with obstruction of pulmonary veins (Thesis). OCLC 83934259. Bear, Harry D. (2005). "Walter Lawrence ...
The remaining blood is returned to the heart via the pulmonary veins. Bronchial arteries Pulmonary arteries Pulmonary veins ... while the left side drains into the left superior intercostal vein or the accessory hemiazygos vein. Bronchial veins are ... The bronchial veins are small vessels that return blood from the larger bronchi and structures at the roots of the lungs. The ... The bronchial veins are counterparts to the bronchial arteries. However, they only carry ~13% of the blood flow of the ...
The blood vessels of the pulmonary circulation are the pulmonary arteries and the pulmonary veins. A separate circulatory ... Blood is then pumped from the right ventricle through the pulmonary valve and into the pulmonary artery. The pulmonary arteries ... The pulmonary veins return oxygenated blood to the left atrium of the heart. The oxygenated blood then leaves the lungs through ... Pulmonary hypertension describes an increase in resistance in the pulmonary arteries. Pulmonary embolism is occlusion or ...
ATP1A2 Alveolar capillary dysplasia with misalignment of pulmonary veins; 265380; FOXF1 Alveolar soft part sarcoma; 606243; ... ZFHX4 Pulmonary alveolar microlithiasis; 265100; SLC34A2 Pulmonary alveolar proteinosis; 300770; CSF2RA Pulmonary fibrosis, ... MADH9 Pulmonary hypertension, primary, fenfluramine-associated; 178600; BMPR2 Pulmonary veno occlusive disease; 265450; BMPR2 ... pulmonary, 1; 265120; SFTPB Surfactant metabolism dysfunction, pulmonary, 2; 610913; SFTPC Surfactant metabolism dysfunction, ...
A pulmonary embolism (PE) occurs when a blood clot from a deep vein (a DVT) detaches from a vein (embolizes), travels through ... DVT most frequently affects veins in the leg or pelvis including the popliteal vein (behind the knee), femoral vein (of the ... cause vein fibrosis, and result in non-compliant veins. Organization of a thrombus into the vein can occur at the third stage ... splanchnic vein thrombosis), liver (Budd-Chiari syndrome), kidneys (renal vein thrombosis), and ovaries (ovarian vein ...
"Total Anomalous Pulmonary Venous Drainage Into the Portal Vein." American Heart Journal. vol. 53, no. 4, 1957, pp. 616-623. ... "Pulmonary Interstitial Emphysema in the Newborn Infant Precursors and Sequelae: A Clinical and Pathologic Study." Disease of ...
A prospective, randomized comparison of modified pulmonary vein isolation versus conventional pulmonary vein isolation in ... They are typically numerous at the pulmonary veins antrum. Several evidences have shown that the AFNs represent the true ... Arruda M, Natale A. Ablation of permanent AF: adjunctive strategies to pulmonary veins isolation: targeting AF NEST in sinus ...
... nonpyogenic mesenteric pulmonary The risk of developing deep vein thrombosis, or pulmonary embolism is different than the total ... "Deep Vein Thrombosis & Pulmonary Embolism, Chapter 2, Travelers' Health". CDC. Retrieved 2016-12-25. This article incorporates ... Risk assessment and intervention for those with one or more episodes of deep vein thrombosis or blood clots in the veins ... Estimates of the incidence of pulmonary embolism in the US is 0.1% persons/year. Hospital admissions in the US for pulmonary ...
Issuing from each lung is a pair of pulmonary veins; each pair unites to form a single vessel, and these in turn join in a ... so that in the adult all four veins open separately into the left atrium. This article incorporates text in the public domain ...
... risk of deep vein thrombosis but not of pulmonary embolism. Multidetector-row computed tomography in suspected pulmonary ... Perrier, A.; Bounameaux, H. (2001). "Cost-effective diagnosis of deep vein thrombosis and pulmonary embolism". Thrombosis and ... Diagnosis of pulmonary embolism by a noninvasive decision analysis-based strategy including clinical probability, D-Dime levels ... His main contribution to the field relates to the non-invasive work-up of suspected pulmonary embolism, particularly the use of ...
A multiple anomaly of the human heart and pulmonary veins. Anat. Record 78(3): 383-388, 1940. 1944 US 2348074 "Breathing ... Clark JM, Lambertsen CJ (May 1971). "Rate of development of pulmonary O2 toxicity in man during O2 breathing at 2.0 Ata". J ... Fisher AB, Hyde RW, Puy RJ, Clark JM, Lambertsen CJ (April 1968). "Effect of oxygen at 2 atmospheres on the pulmonary mechanics ... Puy RJ, Hyde RW, Fisher AB, Clark JM, Dickson J, Lambertsen CJ (April 1968). "Alterations in the pulmonary capillary bed during ...
Ding, Xueqin; Murray, Paul A. (November 2005). "Cellular mechanisms of thromboxane A2-mediated contraction in pulmonary veins ...
Bronchial veins Pulmonary thromboendarterectomy Marini TJ, He K, Hobbs SK, Kaproth-Joslin K (December 2018). "Pictorial review ... Note that much of the oxygenated blood supplied by the bronchial arteries is returned via the pulmonary veins rather than the ... of the pulmonary vasculature: from arteries to veins". Insights into Imaging. 9 (6): 971-987. doi:10.1007/s13244-018-0659-5. ... They anastomose with the branches of the pulmonary arteries, and together, they supply the visceral pleura of the lung in the ...
Manscill, D.C. (2018). "Intermittent Pneumatic Compression and Preventing Deep Vein Thrombosis & Pulmonary Embolism". Top Sport ... in your veins] are competent, will be displaced proximally." When the inflatable sleeves deflate, the veins will replenish with ... The primary functional aim of the device "is to squeeze blood from the underlying deep veins, which, assuming that the valves [ ... pulmonary embolism (PE), or the combination of DVT and PE which is venous thrombeombolism (VTE). In use, an inflatable jacket ( ...
"Electrophysiologic and Antiarrhythmic Effects of AZD1305 in Canine Pulmonary Vein Sleeves". Journal of Pharmacology and ...
They are located in large systemic veins and in the walls of the atria of the heart, and pulmonary vasculature. Low pressure ... In the left atrium, the junction is at the pulmonary veins. Low pressure baroreceptors are involved in regulation of the blood ...
"Pathological Effects of Pulmonary Vein beta-Radiation in a Swine Model". Journal of Cardiovascular Electrophysiology. 17 (6): ... there is continued interest in vascular brachytherapy for persistent restenosis in failed stents and vein grafts. The therapy ...
Sources of these disturbances are either automatic foci, often localized at one of the pulmonary veins, or a small number of ... A group of cardiologists led by Dr Haïssaguerre from Bordeaux University Hospital noted in 1998 that the pulmonary veins are an ... Most commonly, CA electrically isolates the left atrium from the pulmonary veins, where most of the abnormal electrical ... favoring re-entries from the pulmonary veins. The rate of AF in smokers is 1.4 times higher than in non-smokers. However, snus ...
Venous thromboembolism (VTE) consists of deep vein thrombosis (DVT) and pulmonary embolism (PE). DVT is a blood clot in a deep ... "Deep Vein Thrombosis". NHLBI, NIH. Retrieved 28 December 2019. Sitruk-Ware R, Nath A (February 2013). "Characteristics and ... vein, most commonly in the legs, while PE occurs when a clot breaks free and blocks an artery in the lungs. VTE is a rare but ...
Over a three-year period, his pulmonary vein was converted into an aorta. Head first gained popularity by playing Bo Miller, a ...
Communicating veins are veins that directly connect superficial veins to deep veins. Pulmonary veins are a set of veins that ... the great cardiac vein, the middle cardiac vein, the small cardiac vein, the posterior vein of the left ventricle, and the vein ... the middle cardiac vein, the small cardiac vein, the smallest cardiac veins, and the anterior cardiac veins. Cardiac veins ... Heart veins that go directly to the right atrium: the anterior cardiac veins, and the smallest cardiac veins (Thebesian veins ...
He pioneered the use of catheter ablation to treat atrial fibrillation using the technique of pulmonary vein isolation to ... "Spontaneous Initiation of Atrial Fibrillation by Ectopic Beats Originating in the Pulmonary Veins". New England Journal of ... atrial fibrillation is triggered by abnormal electrical impulses originating from the pulmonary veins, structures hitherto ...
site 454 Varicose veins of lower extremities 454.0 Varicose veins w/ ulcer 454.1 Varicose veins w/ inflammation 454.2 Varicose ... 415 Acute pulmonary heart disease 415.0 Acute cor pulmonale 415.1 Pulmonary embolism and infarction 415.11 Iatrogenic pulmonary ... 452 Portal vein thrombosis 453 Other venous embolism and thrombosis 453.4 Deep vein thrombosis, unspec. 453.41 Deep vein ... pulmonary embolism 415.19 Other pulmonary embolism and infarction 416 Chronic pulmonary heart disease 416.0 Primary pulmonary ...
2005). "Systemic regulation of vascular NAD(P)H oxidase activity and nox isoform expression in human arteries and veins". ... 2005). "Human urotensin II is a novel activator of NADPH oxidase in human pulmonary artery smooth muscle cells". Arterioscler. ...
RAMP:p. 31 Recent MI Aortic stenosis MI in the last 7 days Pulmonary hypertension FROM JANE: Fever Roth's spots Osler's nodes ... SICVD:p. 34 Symmetry of leg musculature Integrity of skin Color of toenails Varicose veins Distribution of hair PATCH MED:p. 34 ... Tricuspid valve Pulmonary semilunar valve Mitral (bicuspid) valve Aortic semilunar valve HILT:p. 29 Heaving Impalpable ... Pirates:p. 3 Pulmonary: PE, COPD Iatrogenic Rheumatic heart: mitral regurgitation Atherosclerotic: MI, CAD Thyroid: ...
... as seen in nephrotic syndrome when a renal vein thrombosis embolizes to the lungs. Cardiogenic shock can mimic a pulmonary ... Pulmonary-renal syndrome (PRS) is a rare medical syndrome in which respiratory failure involving bleeding in the lungs and ... Pulmonary-renal syndromes are most commonly caused by an underlying autoimmune disease. PRS is most commonly due to ANCA- ... Microscopic polyangiitis is the most common cause of pulmonary-renal syndrome.[citation needed] Other causes include systemic ...
These arteries branch from the pulmonary and bronchial arteries, and run together through the center of the segment. Veins and ... "Naming the bronchopulmonary segments and the development of pulmonary surgery". Ann Thorac Surg. 55 (1): 184-8. doi:10.1016/ ...
Fine spines are present along the veins and leaf edges. The undersides have whitish veins. They emit latex when cut. The flower ... It can cause pulmonary emphysema in cattle feeding exclusively on the plant. Lactuca serriola can be eaten as a salad, although ...
Barrier formed by the continuous blood capillaries in the thymic cortex Pulmonary vein - Veins that transfer oxygenated blood ... This can be a result of several possible causes, including blast injury, swimming-induced pulmonary edema, and breathing gas ... Failure of the barrier may occur in a pulmonary barotrauma. ...
The heart is typically reached by passing through the femoral vein, jugular vein, or subclavian vein. A balloon dilation test ... Percutaneous pulmonary valve implantation (PPVI), also known as transcatheter pulmonary valve replacement (TPVR), is the ... October 2000). "Percutaneous replacement of pulmonary valve in a right-ventricle to pulmonary-artery prosthetic conduit with ... replacement of the pulmonary valve via catheterization through a vein. It is a significantly less invasive procedure in ...
... thrombosis of right external iliac vein and common femoral vein or cerebral gas embolism. The type of embolic events caused by ... The study authors suggest physician evaluation via contrast enhanced CT scans for the presence of pulmonary emboli when caring ... warned that H1N1 flu can cause pulmonary embolism, surmised as a leading cause of death in this pandemic. ... 2 response to H1N1 influenza which may be responsible for the systemic inflammatory response syndrome that causes pulmonary ...
Contrast is injected into the pulmonary trunk, left or right pulmonary artery, or segment of the pulmonary artery.[citation ... Commonly, this includes the radial artery, internal jugular vein, and femoral artery/vein. Each blood vessel has its advantages ... This device is implanted into the pulmonary artery to permit real-time measurement of the pulmonary artery pressure over time.[ ... Values are commonly obtained for the right atrium, right ventricle, pulmonary artery, and pulmonary capillary "wedge" pressures ...
... inflamed veins, acute respiratory distress syndrome, pulmonary edema, inflamed lips, swollen face, stomach upset, constipation ... It can be taken by mouth or used by injection into a vein. Common side effects include vision problems, nausea, abdominal pain ...
Such hemolysis is more likely to occur when a patient's veins are difficult to find or when they collapse when blood is removed ... Pulmonary hypertension has been gaining recognition as a complication of chronic hereditary and acquired hemolysis. Free ... Splenectomy of those with hemolytic disorders appears to increase risk of developing pulmonary thrombosis. Complications may ... Machado, Roberto F.; Gladwin, Mark T. (2010). "Pulmonary Hypertension in Hemolytic Disorders". Chest. Elsevier BV. 137 (6): 30S ...
It may identify a deep vein thrombosis in up to 50% of people with pulmonary embolism. Knee or hip replacement are, by ... Ultrasonography in suspected deep vein thrombosis focuses primarily on the femoral vein and the popliteal vein, because thrombi ... perpendicular to the vein axis), displaying cross-sections of the veins. All collateral veins are better detected this way, ... in these veins are associated with the greatest risk of harmful pulmonary embolism.[citation needed] The risk of deep vein ...
... including acute pulmonary oedema and cardiac arrest (occurring in ≈1 in 1000 patients).[citation needed] Rieber, J. (2005). " ... is administered via an antecubital fossa vein on the contralateral arm to the adenosine.[citation needed] Typically, 3 short ...
Dexamethasone and Betamethasone in premature labor, to enhance pulmonary maturation of the fetus. Doxepin has been used to ... as well as macular edema from diseases such as diabetic retinopathy and central retinal vein occlusion. Buprenorphine has been ...
He returned to comedy for Monte Carlo or Bust! (1969), an all-star car race film in the vein of The Great Race. He made some ... On July 8, 2010, Curtis, who suffered from chronic obstructive pulmonary disease (COPD), was hospitalized in Las Vegas after ...
Was stabbed with needles for more than two-and-a-half hours as the execution team tried to locate a suitable vein. The ... His autopsy showed that the execution drugs caused him to suffer "flash pulmonary edema." Joe Nathan James Jr. (2022) - Lethal ... Executioners were unable to find a suitable vein. A second attempt was scheduled for 2019, but he died in prison from natural ... A post-mortem examination revealed that Díaz's IVs were improperly inserted past his veins to his subcutaneous soft tissue. ...
CT pulmonary angiogram (CTPA) is used to examine the pulmonary arteries in the lungs, most commonly to rule out pulmonary ... is a computed tomography technique used for angiography-the visualization of arteries and veins-throughout the human body. ... A D-dimer assay might be a preferred alternative to test for pulmonary embolism, and that test and a low clinical prediction ... CT angiography should not be used to evaluate for pulmonary embolism when other tests indicate that there is a low probability ...
It is given by injection into a vein. Side effects may include low blood potassium, high blood sodium, and swelling. It is not ... including pulmonary edema. Also, it can cause metabolic alkalosis (with signs including muscular twitchings, irritability and ...
It is therefore used to indicate deep-vein thrombosis, pulmonary embolism, DIC and efficacy of treatment in acute myocardial ... and in the event of pulmonary embolism. Thrombolysis refers to the dissolution of the thrombus due to various agents while ...
... performed the first totally thoracoscopic bilateral pulmonary vein isolation procedure David L. Reich, academic ... Among the innovations at Mount Sinai were performing the first blood transplant into the vein of a fetus in 1986, and the ...
Deep vein thrombosis and pulmonary embolism are other complications that may occur in any type of injury to the acetabulum. A ...
The heart organ played a role in mediating the exchange of the blood which was in the vein and the air in the arteries. The ... Later on, Galen moved to Rome where he carried out vivisections on pigs and monkeys to observe their pulmonary circulation. He ... Galen states the "liver is the archai" or the source of the veins and blood of the body and is therefore important in regards ... and it was observed that when these nerves were cut in animals they would lose their voice and when veins were cut they would ...
... or a large pulmonary embolism. A chest x-ray is useful to confirm or rule out a pneumothorax, pulmonary edema, or pneumonia. ... Risk factors include deep vein thrombosis, recent surgery, cancer, and previous thromboembolism. It must always be considered ... pulmonary embolism, or pneumothorax. Patients with COPD and idiopathic pulmonary fibrosis (IPF) have a mild onset and gradual ... D-dimer, while useful to rule out a pulmonary embolism in those who are at low risk, is not of much value if it is positive, as ...
The usual signs and symptoms of DVT and pulmonary embolism may be masked in SCI cases due to effects such as alterations in ... SCI have been found to be less likely to develop complete injuries and some complications such as pressure sores and deep vein ... Complications of spinal cord injuries include pulmonary edema, respiratory failure, neurogenic shock, and paralysis below the ... the clot can break off and form a pulmonary embolism, lodging in the lung and cutting off blood supply to it. DVT is an ...
Its position is marked by the location of the right coronary artery and small cardiac vein. The right coronary sulcus separates ... The left coronary sulcus originates posterior to the pulmonary trunk, and travels inferiorly separating the left atrium and ... where it is crossed by the root of the pulmonary trunk. On the posterior surface of the heart, the coronary sulcus contains the ...
... the pulmonary artery takes it to the lungs. Later, the pulmonary vein then mixes air from the lungs with blood to form arterial ... He also distinguished between veins and arteries, noting that the latter pulse and the former do not. Thus, while working at ... After conducting extensive research, the two Alexandrians mapped out the course of the veins and nerves across the human body. ... In addition, he and his contemporary, Erasistratus of Chios, continued to research the role of veins and nerves. ...
... or acoustic energy to ablate atrial tissue near the pulmonary veins and make other required ablations to mimic the maze. ... The energy emitting probe (electrode) is placed into the heart through a catheter inserted into veins in the groin or neck. ... related pulmonary disease, or cardiac abnormalities such as enlargement of the left atrium, and age under 60 years . The ...
An observing doctor stated that Lockett's vein had ruptured. It is not clear whether his death was caused by one or more of the ... of benzodiazepine overdose and the risk of death are also increased in the elderly and those with obstructive pulmonary disease ...
... and the filling level of the external jugular vein determined. The internal jugular vein is visualised when looking for the ... The abdominojugular test, when done in a standardized fashion, correlates best with the pulmonary arterial wedge pressure, and ... occludable - the JVP can be stopped by occluding the internal jugular vein by lightly pressing against the neck. It will fill ... In healthy people, the filling level of the jugular vein should be less than 4 centimetres vertical height above the sternal ...
Deep Vein Thrombosis & Pulmonary Embolism. CDC Yellow Book 2024. Travel by Air, Land & Sea ... Deep vein thrombosis (DVT) is a condition in which a blood clot develops in the deep veins, usually in the lower extremities. A ... Computed tomographic pulmonary angiography is the standard imaging procedure for diagnosis of PE. Ventilation-perfusion scan is ... pulmonary embolism (PE) occurs when a part of the DVT clot breaks off and travels to the lungs, which can be life-threatening. ...
The cause is usually a blood clot in the leg called deep vein thrombosis. Learn more. ... A pulmonary embolism is a sudden blockage in a lung artery. ... What is a pulmonary embolism (PE)?. A pulmonary embolism (PE) ... What causes a pulmonary embolism (PE)?. The cause is usually a blood clot in the leg called a deep vein thrombosis that breaks ... Patients Guide to Recovery after Deep Vein Thrombosis or Pulmonary Embolism (American Heart Association) ...
U.S. FDA Approves Eliquis (apixaban) for the Treatment of Deep Vein Thrombosis (DVT) and Pulmonary Embolism (PE), and for the ... ELIQUIS is indicated for the prophylaxis of deep vein thrombosis (DVT), which may lead to pulmonary embolism (PE), in patients ... Acute PE in Hemodynamically Unstable Patients or Patients who Require Thrombolysis or Pulmonary Embolectomy: Initiation of ... DVT is a blood clot in a vein, usually in the lower leg, thigh, or pelvis, which partially or totally blocks the flow of blood ...
Petition 21 - Deep Vein Thrombosis and Pulmonary Embolism. Petition letter received from individual. (4 pages, 2.51 MB). ... Petition 021 - Deep Vein Thrombosis and Pulmonary Embolism. Federal Register, Vol. 84, No. 58. Pages: 11267-11268. March 26, ... Health Condition Requested for Consideration: Deep Vein Thrombosis and Pulmonary Embolism. Finding of Insufficient Evidence ...
Deep Vein Thrombosis and Pulmonary Embolus in Pregnancy answers are found in the 5-Minute Clinical Consult powered by Unbound ... Deep Vein Thrombosis and Pulmonary Embolus in Pregnancy. In: Domino FJF, Baldor RAR, Golding JJ, et al, eds. 5-Minute Clinical ... "Deep Vein Thrombosis and Pulmonary Embolus in Pregnancy." 5-Minute Clinical Consult, 27th ed., Wolters Kluwer, 2020. Medicine ... Deep Vein Thrombosis and Pulmonary Embolus in Pregnancy. (2020). In Domino, F. J., Baldor, R. A., Golding, J., & Stephens, M. B ...
Deep Vein Thrombosis Deep vein thrombosis and pulmonary embolisms: An overview. Andrei Kindzelski, M.D., Ph.D., is the program ... Deep Vein Thrombosis A silent killer: Exploring the impact of deep vein blood clots. Deep vein thrombosis (DVT) is a blood clot ... Deep Vein Thrombosis Struggling to breathe: A battle with deep vein thrombosis. Michael Morizio knows how quickly life can ... Weve compiled a list of symptoms, causes, and treatment for deep vein thrombosis and pulmonary embolisms with information from ...
Removal of the broken part of implantable cardioverter-defibrillators electrode causing pulmonary embolism via femoral vein. ... The distal part of the electrode was broken during manual traction through the left subclavian vein. In the present case, we ...
Deep vein thrombosis and pulmonary embolism / Jane Griffin. By: Griffin, JaneContributor(s): Office of Health Economics (London ... Pulmonary embolism -- prevention and control , Economics, Medical , United KingdomNLM classification: WG 420 96GR ...
Rayer first described the association between renal vein thrombosis (RVT) and nephrotic syndrome. Earlier reports, from ... Cases of renal vein thrombosis and pulmonary embolism have been reported in patients with COVID-19. [9, 10] ... Renal vein thrombosis and pulmonary embolism. Cleve Clin J Med. 2018 Nov. 85 (11):833-834. [QxMD MEDLINE Link]. ... Pulmonary Embolism and Renal Vein Thrombosis in Patients with Nephrotic Syndrome: Prospective Evaluation of Prevalence and Risk ...
... veins is an uncommon disorder that affects the lung vasculature development in the neonatal period and leads to pulmonary ... Alveolar capillary dysplasia with misalignment of the pulmonary ... capillary dysplasia with misalignment of the pulmonary veins is ... cases highlight the importance of early recognition of this disease in the setting of persistent and supra-systemic pulmonary ... an uncommon disorder that affects the lung vasculature development in the neonatal period and leads to pulmonary hypertension. ...
Spectral doppler through pulmonary vein. Spectral doppler is presented similarly to M-mode in which the doppler information is ... atrium to pulmonary artery Fontan procedure. left ventricle to aorta Rastelli procedure. right ventricle to pulmonary artery ... Percutaneous pulmonary valve implantation. production of septal defect in heart. enlargement of existing septal defect Atrial ... systemic circulation to pulmonary artery shunt Blalock-Taussig shunt. SVC to the right PA Glenn procedure. ...
Narrowing of the pulmonary veins. These are the veins that carry blood from the lungs to the heart. ... This abnormal signaling most commonly occurs near the connection between the pulmonary veins and the left atrium. These veins ...
Pulmonary embolism Enlarge image Close Pulmonary embolism. Pulmonary embolism. A pulmonary embolism (PE) occurs when a blood ... Blood clot in leg vein Enlarge image Close Blood clot in leg vein. Blood clot in leg vein. A blood clot in a leg vein may cause ... Deep vein thrombosis (DVT) occurs when a blood clot (thrombus) forms in one or more of the deep veins in the body, usually in ... Deep vein thrombosis can be serious because blood clots in the veins can break loose. The clots can then travel through the ...
Patients with pulmonary vein stenosis should undergo percutaneous angioplasty, which can significantly improve pulmonary blood ... Paroxysmal AF is usually caused by triggered and ectopic activity in pulmonary veins, and ablation around the veins terminates ... Pulmonary vein antrum isolation in patients with paroxysmal atrial fibrillation: more than a decade of follow-up. Circ Arrhythm ... The AF cure rate after pulmonary vein isolation may be influenced by sinus node function in both the early and late stages. ...
Deep Vein Thrombosis, Pulmonary Embolism, DVT Awareness Month, Blood Clot Survivor, My Blood Clot Tried to Kill Me , svg dxf t- ...
A single atrial fibrillation trigger focus in the left or right superior pulmonary vein was found in 3 and 1 patients, ... Two patients had two trigger foci originating from the orifice or proximal part of both superior pulmonary veins. After RF ... A single atrial fibrillation trigger focus in the left or right superior pulmonary vein was found in 3 and 1 patients, ... Two patients had two trigger foci originating from the orifice or proximal part of both superior pulmonary veins. After RF ...
So these are pulmonary veins. And then the cycle starts again. The pulmonary veins bring the oxygenated blood into the left ... Do lungs also contain systemic arteries/veins, or just pulmonary ones?. Answer. Button navigates to signup page. •. 3 comments ... Im going to draw the blood in red in the veins, just so we dont keep going with that misconception, that blood in the veins ... Do the valves in the veins have an equivalent of the chordae tendineae (tendons attached to the walls of the veins) to make ...
... is a faculty member of the Division of Pulmonary Biology at Cincinnati Childrens Hospital Medical Center within the UC ... Alveolar capillary dysplasia with misalignment of pulmonary veins (ACDMPV) *Acute lung injury/Acute Respiratory Distress ... Pulmonary cKIT+ endothelial progenitor cells capable of engraftment into hyperoxia-injured neonatal pulmonary vasculature to ... and Alveolar capillary dysplasia with misalignment of pulmonary veins (ACDMPV), are among leading causes of death in newborns ...
Additional diastolic parameters can be of help such as pulmonary vein velocities, tissue Doppler imaging, and hepatic vein ... k. Pulmonary vein pattern (S or D; presence of A reversal ,20 cm/s). l. Pulmonic valve flow time-to-peak flow (ms). m. ... In addition, the study of diastolic function could be complemented with an analysis of pulmonary venous flow. ...
Superior Pulmonary Vein. Wessex Cardiac Centre Meeting, Southampton UK,. June 15, 1997. ...
A negative SimpliRED D-dimer assay result does not exclude the diagnosis of deep vein thrombosis or pulmonary embolus in ... We judged that venous thromboembolism, which includes both deep vein thrombosis and pulmonary embolism, was present if there ... evaluation of deep vein thrombosis data separately if patients with pulmonary embolism were included; follow up of all patients ... a study of 255 patients with suspected pulmonary embolism and deep vein thrombosis. Blood Coagul Fibrinolysis 2000;11: 715-21. ...
Pulmonary Veno-Occlusive Disease (20) * Reperfusion Injury (2985) * Retinal Vein Occlusion (114) ...
... including deep vein thrombosis, pulmonary embolism, post procedure pulmonary embolism); Stroke / Cerebrovascular accident (CVA ... and Transient Ischemic Attack (TIA); System organ failure: Cardio-respiratory arrest, Worsening heart failure, Pulmonary ...
Atrial esophageal fistula and pulmonary vein stenosis did not occur in either group. Phrenic nerve injury and paralysis did ... In ADVENT, slightly more than 600 patients with paroxysmal AF were randomly assigned to ablation (pulmonary vein isolation) ...
Have deep vein thrombosis or pulmonary embolism, now or in the past [see Warnings and Precautions (5.1)] ... Vascular Events: Deep vein thrombosis, pulmonary embolism, retinal vascular thrombosis, hot flush; ... and venous thromboembolic events including pulmonary embolism (1 subject) and deep vein thrombosis (DVT) (1 subject). ... Evaluate for retinal vein thrombosis immediately [see Adverse Reactions (6.2)]. *If feasible, stop Sprintec at least 4 weeks ...
Right inferior pulmonary vein (at entrance into left atrium) 12 . Lateral basal segmental bronchus ... The ascending aorta has been cut off to expose the right pulmonary artery (8). The pericardium has been cut away except for its ...
Azygos vein enlarged ................................................... 378 Locus of pulmonary artery enlargement ... right descending pulmonary artery was measured for all subject with a positive finding for pulmonary artery enlargement (as ... the prevalence of pulmonary hypertension. Those x-rays that were coded as showing pulmonary artery enlargement could be ... Azygos vein enlarged ................................................... 443 Locus of pulmonary artery enlargement ...
Adverse events were tracked for 90 days, including major bleeding, deep vein thrombosis, and pulmonary embolism. ... Blood thinners, or anticoagulants, are often prescribed to help prevent blood clots that can lead to pulmonary embolism, heart ...
Venous thromboembolism in over 16s: reducing the risk of hospital-acquired deep vein thrombosis or pulmonary embolism - NICE ... This NICE guideline covers assessing and reducing the risk of venous thromboembolism and deep vein thrombosis in people aged 16 ...
  • What is a pulmonary embolism (PE)? (
  • A pulmonary embolism (PE) is a sudden blockage in a lung artery. (
  • What causes a pulmonary embolism (PE)? (
  • Who is at risk for a pulmonary embolism (PE)? (
  • What are the symptoms of a pulmonary embolism (PE)? (
  • Half the people who have pulmonary embolism have no symptoms. (
  • How is a pulmonary embolism (PE) diagnosed? (
  • What are the treatments for a pulmonary embolism (PE)? (
  • The filter catches blood clots before they travel to the lungs, which prevents pulmonary embolism. (
  • Can pulmonary embolism (PE) be prevented? (
  • A pulmonary embolism (PE) occurs when a part of the DVT clot breaks off and travels to the lungs, which can be life-threatening. (
  • If a clot lodges in an artery in the lungs, it can block blood flow and lead to a sometimes-deadly condition called pulmonary embolism. (
  • See your doctor immediately if you have any signs or symptoms of deep vein thrombosis or pulmonary embolism (see the Wise Choices box). (
  • The clots can then travel through the bloodstream and get stuck in the lungs, blocking blood flow (pulmonary embolism). (
  • When DVT and pulmonary embolism occur together, it's called venous thromboembolism (VTE). (
  • A pulmonary embolism (PE) occurs when a blood clot gets stuck in an artery in the lung, blocking blood flow to part of the lung. (
  • If you develop symptoms of a pulmonary embolism (PE) - a life-threatening complication of deep vein thrombosis - seek emergency medical help. (
  • The cause is usually a blood clot in the leg called a deep vein thrombosis that breaks loose and travels through the bloodstream to the lungs. (
  • These veins are what bring blood back from the lungs to the left atrium. (
  • These are the veins that carry blood from the lungs to the heart. (
  • Do lungs also contain systemic arteries/veins, or just pulmonary ones? (
  • Some of the blood drains back through the Bronchial Veins, but some of it joins the deoxygenated blood in the lungs from the Pulmonary Arteries, becomes re-oxygenated, and re-enters the heart through the Pulmonary Veins. (
  • The pulmonic valve is between the right ventricle and the pulmonary artery, which carries blood to the lungs. (
  • The pulmonary circulation is a short loop from the heart to the lungs and back again. (
  • Once the blood is back in the heart, it needs to re-enter the pulmonary circulation and go back to the lungs to drop off the carbon dioxide and pick up more oxygen. (
  • The 'right heart,' during contraction, pumps the blood to the lungs via the pulmonary artery. (
  • The veins that return the oxygenated blood from the lungs to the left atrium of the heart. (
  • Pulmonary artery stenosis (narrowing) affects the artery that carries blood to your child's lungs to pick up oxygen. (
  • Pulmonary artery stenosis is narrowing in the pulmonary artery, a large blood vessel that connects the right ventricle to the lungs. (
  • Narrowing in the pulmonary artery makes it hard for blood to reach your child's lungs. (
  • Infants with Atypical Presentations of Alveolar Capillary Dysplasia with Misalignment of the Pulmonary Veins Who Underwent Bilateral Lung Transplantation. (
  • To describe disease course , histopathology, and outcomes for infants with atypical presentations of alveolar capillary dysplasia with misalignment of the pulmonary veins ( ACDMPV ) who underwent bilateral lung transplantation . (
  • Respiratory lung disorders, such as Bronchopulmonary dysplasia (BPD), Acute Respiratory Distress Syndrome (ARDS) and Alveolar capillary dysplasia with misalignment of pulmonary veins (ACDMPV), are among leading causes of death in newborns and infants in the United States. (
  • Because of several episodes of dyspnea, a pulmonary angiogram was also performed, and showed partial or complete obstruction of both inferior pulmonary arteries with "pruning" of lower lobes. (
  • Arteries vs. veins - what's the difference? (
  • Learn some important differences between arteries (high pressure/low volume) and veins (low pressure/high volume). (
  • If so, why do arteries have both higher pressure and higher velocity than veins? (
  • Arteries have a higher flow than veins because of heart. (
  • How many veins and arteries are there in your body? (
  • Lung lobes are served by separate bronchial trees and their corresponding pulmonary arteries and are anatomically independent. (
  • Arteries carry blood away from the heart and veins carry blood back to the heart. (
  • The pulmonary artery is a big artery that comes from the heart. (
  • At each body part, a network of tiny blood vessels called capillaries connects the very small artery branches to very small veins. (
  • Narrowing may occur in the main pulmonary artery and/or in its left or right branches. (
  • Who does pulmonary artery stenosis affect? (
  • Pulmonary artery stenosis is relatively rare. (
  • What causes pulmonary artery stenosis? (
  • Some people are born with pulmonary artery stenosis and have problems with their heart valves, walls or other parts of their heart as well. (
  • Others who have pulmonary artery stenosis at birth have no other heart issues. (
  • In 40% of cases, people are born with pulmonary artery stenosis but don't have other heart problems. (
  • A defect in which the pulmonary valve, which connects the right ventricle to the pulmonary artery, doesn't form at all. (
  • This is a connection between your child's pulmonary artery and aorta. (
  • Problems that compress your child's pulmonary artery from the outside. (
  • Some people get pulmonary artery stenosis after having a surgical procedure. (
  • VTE is often recurrent and can lead to long-term complications (e.g., post-thrombotic syndrome after a DVT, chronic thromboembolic pulmonary hypertension after a PE). (
  • We report a 35-year-old woman who suffered from severe pulmonary hypertension due to chronic cystic lung disease. (
  • We postulated that the important factors in the development of her thrombosis were stasis due to pulmonary hypertension and high blood viscosity. (
  • In contrast with neonates with classic ACDPMV who present with severe hypoxemia and refractory pulmonary hypertension within hours of birth , none of the infants with atypical ACDMPV presented with progressive neonatal respiratory failure . (
  • Three other infants had no respiratory symptoms at birth and presented with hypoxemia and pulmonary hypertension at 2-3 months of age. (
  • Given the clinical and histopathologic spectra, ACDMPV should be considered in infants with hypoxemia and pulmonary hypertension , even beyond the newborn period. (
  • Pulmonary arterial hypertension and. (
  • Your health care provider inserts a filter inside a large vein called the vena cava. (
  • Inferior cavography demonstrates thrombus extending from the left renal vein into the inferior vena cava. (
  • CT reveals thrombus extending from the left renal vein into the inferior vena cava. (
  • The filter is inserted inside a large vein called the vena cava. (
  • Two large veins that lead into the heart are the superior vena cava and inferior vena cava . (
  • Deep vein thrombosis (DVT) is a condition that occurs when a blood clot forms in a vein deep inside a part of the body. (
  • When a clot forms in a vein deep in the body, it's called deep vein thrombosis. (
  • Deep vein thrombosis (DVT) occurs when a blood clot (thrombus) forms in one or more of the deep veins in the body, usually in the legs. (
  • We've compiled a list of symptoms, causes, and treatment for deep vein thrombosis and pulmonary embolisms with information from MedlinePlus and the National Heart, Lung, and Blood Institute. (
  • Some people aren't aware of a deep vein clot until they have signs and symptoms of a PE. (
  • Deep vein thrombosis has classic symptoms-for example swelling, pain, warmth, and redness on the leg," says Dr. Andrei Kindzelski, an NIH blood disease expert. (
  • Deep vein thrombosis can occur without noticeable symptoms. (
  • [ 19 ] The clinical decision to use a rhythm-control or rate-control strategy requires an integrated consideration of several factors, including degree of symptoms, likelihood of successful cardioversion, presence of comorbidities, and candidacy for AF ablation (eg, catheter-based pulmonary vein electric isolation or surgical ablation). (
  • Seventy five per cent of outpatients who present with signs and symptoms suggestive of deep vein thrombosis do not have the disease. (
  • Impact of a time-to-effect-guided ablation protocol in cryoballoon ablation on the durability of pulmonary vein isolation. (
  • Introduction: Information is lacking about the occurrence of ablation- related proarrhythmic events during application of radiofrequency (RF) energy at the pulmonary veins in patients with paroxysmal focal atrial fibrillation. (
  • mean age 65 ± 12 years) with clinically documented frequent attacks of paroxysmal atrial fibrillation who underwent superior pulmonary vein ablation for left focal atrial fibrillation, 6 patients (15%) developed bradycardia-hypotension syndrome during energy delivery. (
  • Conclusion: RF catheter ablation of the pulmonary vein tissues could evoke a variety of profound bradycardia-hypotension responses. (
  • The terms superior and inferior don't mean that one vein is better than the other, but that they're located above and below the heart. (
  • Cite this: Analyze This Image: Make The Diagnosis in Vein - Medscape - Jul 05, 2018. (
  • Conclusions The combination of low clinical probability for deep vein thrombosis and a normal result from the SimpliRED D-dimer test safely excludes a diagnosis of acute venous thrombosis A normal result from a highly sensitive D-dimer test effectively rules out deep vein thrombosis among patients classified as having either low or moderate clinical probability of deep vein thrombosis. (
  • pasteurianus with Pulmonary Vein Obstruction. (
  • It mainly affects the large veins in the lower leg and thigh, but can occur in other deep veins, such as in the arms and pelvis. (
  • DVT mainly affects the large veins in the lower leg and thigh, most often on one side of the body. (
  • Deep vein thrombosis (DVT) is a condition in which a blood clot develops in the deep veins, usually in the lower extremities. (
  • Medicine Central , (
  • Prophylaxis of deep vein thrombosis (DVT) in patients undergoing hip fracture surgery (including extended prophylaxis), hip replacement surgery, knee replacement surgery, or abdominal surgery. (
  • Prophylaxis of deep vein thrombosis: fondaparinux sodium 2.5 mg subcutaneously once daily after hemostasis has been established. (
  • Deep vein blood clots typically occur in the lower leg or thigh. (
  • In fact, some people don't realize they have a deep vein clot until it causes a more serious condition. (
  • Deep vein clots-especially those in the thigh-can break off and travel through the bloodstream. (
  • Some people are more at risk for deep vein thrombosis than others. (
  • Usually people who develop deep vein thrombosis have some level of thrombophilia, which means their blood clots more rapidly or easily," Kindzelski says. (
  • But deep vein thrombosis can happen at any age. (
  • There are many ways to treat deep vein thrombosis. (
  • If you think you may be at risk for deep vein thrombosis, talk with your doctor. (
  • Deep vein thrombosis can cause leg pain or swelling. (
  • Deep vein thrombosis can be serious because blood clots in the veins can break loose. (
  • This is called deep vein thrombosis (DVT). (
  • The main causes of deep vein thrombosis (DVT) are damage to a vein from surgery or inflammation and damage due to infection or injury. (
  • Many things can increase the risk of developing deep vein thrombosis (DVT). (
  • The selected studies included more than 5000 patients and used a rapid D-dimer assay and explicit criteria to classify cases as having low, intermediate, or high clinical probability of deep vein thrombosis of the lower extremity among consecutive outpatients. (
  • Results When the less sensitive SimpliRED D-dimer assay was used the three month incidence of venous thromboembolism was 0.5% (95% confidence interval 0.07% to 1.1%) among patients with a low clinical probability of deep vein thrombosis and normal D-dimer concentrations. (
  • When a highly sensitive D-dimer assay was used, the three month incidence of venous thromboembolism was 0.4% (0.04% to 1.1%) among outpatients with low or moderate clinical probability of deep vein thrombosis and a normal D-dimer concentration. (
  • Deep vein thrombosis is a common condition that often presents a diagnostic challenge to clinicians. (
  • One way to improve care and at the same time reduce the burden of ultrasound testing is to use a combination of two simple tests that, when combined, accurately exclude deep vein thrombosis. (
  • 4 Researchers into venous thrombosis now use this approach, combining D-dimer testing with estimation of the clinical probability of deep vein thrombosis. (
  • D-dimer concentrations are raised in the setting of acute deep vein thrombosis, 5 and normal concentrations are expected in the absence of acute venous thrombosis unless other, coexistent conditions that activate the coagulation system are present. (
  • The first, developed by Wells et al, 2 12 uses a structured assessment of explicit historical and physical examination criteria (box) to stratify patients into low, moderate, and high risk of deep vein thrombosis. (
  • then, an iterative B-spline fitting model was applied to segment pulmonary lobes. (
  • However, their algorithms [ 6 , 7 ] may not be able to accurately segment pulmonary lobes in some cases due to their fissure decomposition error and confounding structures. (
  • then, a thin plate spline was used to segment pulmonary lobes. (
  • then, a plane was constructed by the given points to segment pulmonary lobes, but their algorithms [ 9 , 10 ] need manual interaction. (
  • The third approaches consist of methods that construct pulmonary atlases to guide lung lobe segmentation. (
  • Pregnancy-related blood clot typically occur in the venous system of the lower extremity or in the iliac veins. (
  • Simple electric isolation of the origins of the pulmonary veins has proven roughly up to 80% successful in substantially reducing frequency and duration of AF in patients who do not tolerate AF well. (
  • Blood clots may form when something slows or changes the flow of blood in the veins. (
  • In an acute setting, US may reveal an edematous and enlarged kidney with decreased echogenicity caused by diffuse edema, as well as focal or diffuse disruption of parenchymal architecture and/or thrombus in the renal veins. (
  • CT findings include decreased nephrographic attenuation, loss of corticomedullary differentiation, a low-attenuating thrombus in the renal vein, renal enlargement with persistent parenchymal opacification, and renal vein enlargement. (
  • A blood clot in a leg vein may cause pain, warmth and tenderness in the affected area. (
  • Celiac and mesenteric angiography demonstrated a portal vein thrombosis. (
  • In 1840, Rayer first described the association between renal vein thrombosis (RVT) and nephrotic syndrome . (
  • Veins are the series of vessels which carry blood from various parts of the body back to the heart. (
  • [ 19 ] Doppler US may reveal increased blood velocity and turbulence in narrowed sections of the renal vein or cessation of blood flow if the lumen is completely obstructed. (
  • The blood then returns to the heart through the pulmonary veins. (
  • Small veins lead to larger and larger veins as the blood approaches the heart. (
  • The blood then returns to the 'left heart' via the pulmonary vein. (
  • One-way valves in the veins aid the blood on its return trip to the heart. (
  • Note that the left renal vein is retroaortic. (
  • This abnormal signaling most commonly occurs near the connection between the pulmonary veins and the left atrium. (
  • A single atrial fibrillation trigger focus in the left or right superior pulmonary vein was found in 3 and 1 patients, respectively. (
  • Pulmonary arteriovenous malformations (PAVMs) are rarely encountered in clinical practice. (
  • This type of Echocardiogram may be a better option for patients with thick chests, abnormal chest walls, chronic obstructive pulmonary disease and the obese. (
  • We believe that oral contraceptive treatment could have induced thromboembolic disease both in portal and pulmonary circulations in this patient. (
  • Bubble contrast TTE" involves the injection of agitated saline into a vein, followed by an Echocardiographic study. (

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