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Right ventricular function in pulmonary
... fact that RV ejection continues after end-systole. This problem can be overcome by measuring pressure–volume loops at several levels of preload,24 but bedside manipulations of venous return are too invasive to be ethically acceptable. In addition, when applied to intact animals, changes in venous re ...
... fact that RV ejection continues after end-systole. This problem can be overcome by measuring pressure–volume loops at several levels of preload,24 but bedside manipulations of venous return are too invasive to be ethically acceptable. In addition, when applied to intact animals, changes in venous re ...
Advances in Arrhythmia and Electrophysiology
... wall ranges between 2.5 and 4.9 mm (mean, 3.9⫾0.7 mm). The anterior wall, related to the aortic root, ranges from 1.5 to 4.8 mm (mean, 3.3⫾1.2 mm) thick, but it can become very thin at the area near the vestibule (Figure 1B) of the mitral annulus, diminishing to an average thickness of 2 mm. Importa ...
... wall ranges between 2.5 and 4.9 mm (mean, 3.9⫾0.7 mm). The anterior wall, related to the aortic root, ranges from 1.5 to 4.8 mm (mean, 3.3⫾1.2 mm) thick, but it can become very thin at the area near the vestibule (Figure 1B) of the mitral annulus, diminishing to an average thickness of 2 mm. Importa ...
Tsuda, T. Pediatric Cardiologist and Associate Professor of
... insidious, and the degree of cyanosis is relatively mild. As these cases are usually not PDA-dependent, PGE1 infusion may not be beneficial unless there is an associated RVOT obstruction. Tricuspid atresia and Ebstein’s anomaly may present with a wide clinical spectrum depending upon the associated ...
... insidious, and the degree of cyanosis is relatively mild. As these cases are usually not PDA-dependent, PGE1 infusion may not be beneficial unless there is an associated RVOT obstruction. Tricuspid atresia and Ebstein’s anomaly may present with a wide clinical spectrum depending upon the associated ...
Asynchronous Atrioventricular Valve Opening as it Relates
... normal infant, however, a right to left atrial shunt would be inconsistent with our current understanding of neonatal hemodynamics. There is a well described schema of interacting hemodynamic events after parturition (10) consisting of a decrease in pulmonary vascular resistance, an increase in syst ...
... normal infant, however, a right to left atrial shunt would be inconsistent with our current understanding of neonatal hemodynamics. There is a well described schema of interacting hemodynamic events after parturition (10) consisting of a decrease in pulmonary vascular resistance, an increase in syst ...
5 Comparative Cardiac Anatomy
... between the heart and liver is long in domestic animals (>5 cm) and short in humans (1-3 cm) (7). The coronary sinus ostium is normally located in the posterior wall of the right atrium, but its location can differ slightly between species. Interestingly, the number of pulmonary veins entering the l ...
... between the heart and liver is long in domestic animals (>5 cm) and short in humans (1-3 cm) (7). The coronary sinus ostium is normally located in the posterior wall of the right atrium, but its location can differ slightly between species. Interestingly, the number of pulmonary veins entering the l ...
Practice Test Version - Feltham
... The questions are of the Multiple Choice style, where the phrase “Which ONE of the following ...” is implied, but is not always stated. So that students are reminded of the type of question that requires short written answers, which unfortunately cannot be automatically marked, each topic has at lea ...
... The questions are of the Multiple Choice style, where the phrase “Which ONE of the following ...” is implied, but is not always stated. So that students are reminded of the type of question that requires short written answers, which unfortunately cannot be automatically marked, each topic has at lea ...
Pak Heart J - Pakistan Heart Journal
... The post infarct ventricular septal defect closure device is a percutaneous, transcatheter, ventricular septal defect closure device intended for the occlusion of ventricular Septal Defects (VSD) after myocardial infarction. It is a self expandable double disc device made from a nitirol-wire mesh. T ...
... The post infarct ventricular septal defect closure device is a percutaneous, transcatheter, ventricular septal defect closure device intended for the occlusion of ventricular Septal Defects (VSD) after myocardial infarction. It is a self expandable double disc device made from a nitirol-wire mesh. T ...
PDF - Circulation
... with evidence of right ventricular hypertrophy (fig. 1). By X-ray examination, the heart was slightly enlarged, without selective chamber enlargement. The aortic arch was on the left side. The vascular pedicle was narrow. The pulmonary vascular shadows were large near the mediastinum, but small near ...
... with evidence of right ventricular hypertrophy (fig. 1). By X-ray examination, the heart was slightly enlarged, without selective chamber enlargement. The aortic arch was on the left side. The vascular pedicle was narrow. The pulmonary vascular shadows were large near the mediastinum, but small near ...
The Correlation between Right Descending Pulmonary Artery
... Our study demonstrated RDPAD on chest radiographic films had a significant correlation with echocardiography-estimated systolic PAP. Although RDPAD had favorable specificity, it lacked sensitivity. Both the positive and negative predictive values were disappointing. RDPAD provided suboptimal accurac ...
... Our study demonstrated RDPAD on chest radiographic films had a significant correlation with echocardiography-estimated systolic PAP. Although RDPAD had favorable specificity, it lacked sensitivity. Both the positive and negative predictive values were disappointing. RDPAD provided suboptimal accurac ...
Subclinical left ventricle dysfunction revealed by echocardiography
... Infantile hemangiomas consist a frequent childhood tumor and have been associated with hemodynamic complications. A 2week-old female neonate presented to our clinic due to a large neck hemangioma. Although the neonate was hemodynamically stable and no apparent clinical signs of heart failure were pr ...
... Infantile hemangiomas consist a frequent childhood tumor and have been associated with hemodynamic complications. A 2week-old female neonate presented to our clinic due to a large neck hemangioma. Although the neonate was hemodynamically stable and no apparent clinical signs of heart failure were pr ...
Congenital Heart Disease
... B. Intermittent right-to-left shunting resulting in cyanosis on exertion (e.g., Eisenmenger's physiology) and with arterial pO2 of 60 Torr or less at a workload equivalent to 5 METs or less. Suggest using fall in pulse oximetry with exercise rather than requiring Arterial blood gases. ...
... B. Intermittent right-to-left shunting resulting in cyanosis on exertion (e.g., Eisenmenger's physiology) and with arterial pO2 of 60 Torr or less at a workload equivalent to 5 METs or less. Suggest using fall in pulse oximetry with exercise rather than requiring Arterial blood gases. ...
Double Switch Operation for Failing Systemic Ventricle
... • Conventional managements of AV discordant heart ( Atrial switch operation in TGA) place the morphologic right ventricle & tricuspid valve in the systemic position • The morphologic RV shows significant incidence of progressive ventricular dysfunction & TV regurgitation • Double switch operation (C ...
... • Conventional managements of AV discordant heart ( Atrial switch operation in TGA) place the morphologic right ventricle & tricuspid valve in the systemic position • The morphologic RV shows significant incidence of progressive ventricular dysfunction & TV regurgitation • Double switch operation (C ...
Applications of transesophageal echocardiography in treating
... Ventricular septal defect with aortic valve prolapse surgery. The postoperative follow-up was performed once every month in the first three months, and then once every three months, to review echocardiography and electrocardiogram. The five-month to 2-year follow-up reviews that no cases with succe ...
... Ventricular septal defect with aortic valve prolapse surgery. The postoperative follow-up was performed once every month in the first three months, and then once every three months, to review echocardiography and electrocardiogram. The five-month to 2-year follow-up reviews that no cases with succe ...
Lesson №1 Anatomy of cardiovascular system. The coronary
... 1. Prove the existence of aneurysm of the heart can be applied: 1. Apekscardiography 2.Radionuklid ventriculography 3.Sektoral echocardiography 4.Rentgenokimography 5. All answers are correctly 2. On the echocardiography in the patients with hypertension and the development of insufficiency in blood ...
... 1. Prove the existence of aneurysm of the heart can be applied: 1. Apekscardiography 2.Radionuklid ventriculography 3.Sektoral echocardiography 4.Rentgenokimography 5. All answers are correctly 2. On the echocardiography in the patients with hypertension and the development of insufficiency in blood ...
Evaluation of a Venous Unifocalization of the Bilateral Superior
... blood flow from the inferior vena cava might not distribute equally after the Fontan procedure, because there is a dimensional mismatch between the baffle and the connecting vessels. It was not until 1994, when Srivastava and colleagues 12) conclusively demonstrated that pulmonary arterialvenous fis ...
... blood flow from the inferior vena cava might not distribute equally after the Fontan procedure, because there is a dimensional mismatch between the baffle and the connecting vessels. It was not until 1994, when Srivastava and colleagues 12) conclusively demonstrated that pulmonary arterialvenous fis ...
Catheterization of pulmonary artery in rats with an - AJP
... pulmonary arterial pressure is needed to better understand the underlying pathophysiological processes. Some attempts have been made over the past 30 years to obtain this important parameter in small laboratory animals. However, no microtip catheter method is presently available that can be applied ...
... pulmonary arterial pressure is needed to better understand the underlying pathophysiological processes. Some attempts have been made over the past 30 years to obtain this important parameter in small laboratory animals. However, no microtip catheter method is presently available that can be applied ...
How the ECG works
... atria and ventricles, that we are really looking at two rates --- the atrial and ventricular rates! It just so happens that in the normal heart, the two are linked in a convenient 1:1 ratio, via normal conduction down the AV node. In disease states, this may not be the case. Conventionally, a normal ...
... atria and ventricles, that we are really looking at two rates --- the atrial and ventricular rates! It just so happens that in the normal heart, the two are linked in a convenient 1:1 ratio, via normal conduction down the AV node. In disease states, this may not be the case. Conventionally, a normal ...
Apixaban versus Warfarin in Patients with Atrial Fibrillation
... At least two episodes of symptomatic atrial fibrillation within the preceding 6 months but no episode of atrial fibrillation that was longer than 7 days (without spontaneous termination or cardioversion) ...
... At least two episodes of symptomatic atrial fibrillation within the preceding 6 months but no episode of atrial fibrillation that was longer than 7 days (without spontaneous termination or cardioversion) ...
Video-assisted bilateral pulmonary vein isolation and left atrial
... He was discharged home after 9 days in stable condition, although he was readmitted 3.5 months postoperatively with exacerbation of congestive heart failure and atrial flutter. He responded to medical management, including the initiation of amiodarone. He has since undergone an electrophysiologic st ...
... He was discharged home after 9 days in stable condition, although he was readmitted 3.5 months postoperatively with exacerbation of congestive heart failure and atrial flutter. He responded to medical management, including the initiation of amiodarone. He has since undergone an electrophysiologic st ...
Katherine Karczewski, 2012. COPD leads to cor pulmonale.
... Recognize Standard Treatments used for COPD Patients with Cor Pulmonale. ...
... Recognize Standard Treatments used for COPD Patients with Cor Pulmonale. ...
Left-to-Right Shunt Lesions
... All left-to-right shunts produce a volume burden on the cardiovascular system. Shunting at the level of the great arteries results in increased pulmonary artery blood flow, increasing pulmonary venous return to the left atrium leading to increased left ventricular end-diastolic volume and left ventr ...
... All left-to-right shunts produce a volume burden on the cardiovascular system. Shunting at the level of the great arteries results in increased pulmonary artery blood flow, increasing pulmonary venous return to the left atrium leading to increased left ventricular end-diastolic volume and left ventr ...
Fontan Operation in a Patient with Severe Hypoplastic Right
... One episode of paroxysmal superior ventricular tachycardia was noted and that was controlled with amiodarone beginning 6 months after the operation. The follow-up cardiac catheterization one year after the operation showed the ventricular end-diastolic pressure of 11 mmHg and the pulmonary artery pr ...
... One episode of paroxysmal superior ventricular tachycardia was noted and that was controlled with amiodarone beginning 6 months after the operation. The follow-up cardiac catheterization one year after the operation showed the ventricular end-diastolic pressure of 11 mmHg and the pulmonary artery pr ...
pressure-volume measurements by conductance catheter method in
... the slope of the relation between the CC-obtained (stroke) volume and the independent method was often much less than one and tended to differ substantially between individual animals. This necessitates the use of an independent, accurate method to obtain the proper calibration if so required, e.g. ...
... the slope of the relation between the CC-obtained (stroke) volume and the independent method was often much less than one and tended to differ substantially between individual animals. This necessitates the use of an independent, accurate method to obtain the proper calibration if so required, e.g. ...
Doppler Velocimetry in Superior Vena Cava Provides Useful
... Background: Although èow velocities curves recorded with pulsed-wave Doppler in systemic vein are known to provide functional data on the right circulatory function, little information is available on the relationship between right heart élling dynamics and right ventricular function. Methods: Conse ...
... Background: Although èow velocities curves recorded with pulsed-wave Doppler in systemic vein are known to provide functional data on the right circulatory function, little information is available on the relationship between right heart élling dynamics and right ventricular function. Methods: Conse ...
Relation between isovolumic relaxation period of left - Heart
... Q wave to closure of the pulmonary valve) by itself does not influence the duration of the fall of ventricular pressure6-8. Therefore, conditions delaying closure of the pulmonary valve such as pulmonary stenosis or ventricular conduction delay should not interfere directly with IRT. An increase in ...
... Q wave to closure of the pulmonary valve) by itself does not influence the duration of the fall of ventricular pressure6-8. Therefore, conditions delaying closure of the pulmonary valve such as pulmonary stenosis or ventricular conduction delay should not interfere directly with IRT. An increase in ...
Atrial septal defect
![](https://commons.wikimedia.org/wiki/Special:FilePath/Asd-web.jpg?width=300)
Atrial septal defect (ASD) is a congenital heart defect in which blood flows between the atria (upper chambers) of the heart. Normally, the atria are separated by a dividing wall, the interatrial septum. If this septum is defective or absent, then oxygen-rich blood can flow directly from the left side of the heart to mix with the oxygen-poor blood in the right side of the heart, or vice versa. This can lead to lower-than-normal oxygen levels in the arterial blood that supplies the brain, organs, and tissues. However, an ASD may not produce noticeable signs or symptoms, especially if the defect is small.A ""shunt"" is the presence of a net flow of blood through the defect, either from left to right or right to left. The amount of shunting present, if any, determines the hemodynamic significance of the ASD. A ""right-to-left-shunt"" typically poses the more dangerous scenario.During development of the fetus, the interatrial septum develops to separate the left and right atria. However, a hole in the septum called the foramen ovale, allows blood from the right atrium to enter the left atrium during fetal development. This opening allows blood to bypass the nonfunctional fetal lungs while the fetus obtains its oxygen from the placenta. A layer of tissue called the septum primum acts as a valve over the foramen ovale during fetal development. After birth, the pressure in the right side of the heart drops as the lungs open and begin working, causing the foramen ovale to close entirely. In approximately 25% of adults, the foramen ovale does not entirely seal. In these cases, any elevation of the pressure in the pulmonary circulatory system (due to pulmonary hypertension, temporarily while coughing, etc.) can cause the foramen ovale to remain open. This is known as a patent foramen ovale (PFO), which is a type of atrial septal defect.