The changes in pulmonary blood flow, pressure, and volume during supine exercise are studied in seven patients without cardiovascular abnormality, 12 patients with aortic valve disease, 13 patients with mitral valve disease, and five patients with primary myocardial or pericardial disease. The degree of distensibility of the pulmonary vascular bed is assessed by the simultaneous changes in the ...

The changes in pulmonary blood flow, pressure, and volume during supine exercise are studied in seven patients without cardiovascular abnormality, 12 patients with aortic valve disease, 13 patients with mitral valve disease, and five patients with primary myocardial or pericardial disease. The degree of distensibility of the pulmonary vascular bed is assessed by the simultaneous changes in the ...

Scanning suprasternal echocardiography was performed in 280 patients with a variety of cardiac anomalies. By using the special suprasternal transducer on the suprasternal notch, the aortic arch, right pulmonary artery, and left atrium were recorded superoinferiorly. From this reference position various scanning techniques were made to record the main pulmonary artery, pulmonary valve, ascending...

BACKGROUND Mitral valve stenosis is often associated with increased pulmonary vascular resistance resulting in pulmonary hypertension, which may lead to or exacerbate right heart dysfunction. Hypocapnia is a known pulmonary vasodilator. The purpose of this study was to evaluate whether induced hypocapnia is an effective treatment for pulmonary hypertension following elective mitral valve replac...

Systolic pressure in the pulmonary artery was estimated from the interval between pulmonary valve closure and tricuspid valve opening, and the heart rate using a nomogram previously described. The timing of valve movements was recorded by Doppler ultrasound. The estimated pressure correlated well with that obtained at catheterisation in 45 of 48 patients with pulmonary hypertension. Instantaneo...

BACKGROUND Subpulmonic membrane as a cause of right ventricular outflow tract obstruction in patients with concordant ventriculoarterial connection and intact ventricular septum is considered to be rare. CASE PRESENTATION A 7-year-old boy was referred to a tertiary care hospital with complaints of dyspnea on moderate exertion and palpitations of about 2 years duration. Physical examination re...

OBJECTIVE To evaluate patients presenting with Tetralogy of Fallot with absent pulmonary valve syndrome to a tertiary care hospital and their surgical management. METHODS The retrospective study was conducted at Congenital Cardiac Services, Aga Khan University Hospital, Karachi, Pakistan, and comprised data of Tetralogy of Fallot patients between April 2007 and June 2012. Data was analysed to...

patients and methods ninety-eight children with congenital ps referred to affiliated hospital of jining medical college were recruited from october 2013 to march 2015. participants were divided into four groups according to different ages (0 - 1, 1 - 3, 3 - 7, 7 - 14), or three groups according to different heart rates (< 90, 90 - 110, > 110). image quality of pulmonary valves was assessed base...

Pulsed Doppler echocardiography in healthy individuals often shows a disturbance of diastolic flow in the right ventricular outflow tract just below the pulmonary valve that suggests regurgitation. This disturbance of diastolic flow was studied in 50 healthy individuals and 40 patients with cardiopulmonary disease, some of whom had a pulmonary regurgitant murmur. Diastolic flow was disturbed in...