A total of 45 examinations on 30 premature infants with chronic lung disease (CLD) of prematurity were made using Doppler echocardiography. Pulmonary systolic time intervals and tricuspid regurgitant velocity were measured to assess the prevalence of pulmonary hypertension and short term responsiveness of the pulmonary circulation to oxygen. Twelve preterm infants matched for gestational age, s...

Continuous-wave Doppler echocardiography was used to examine the aortic regurgitant flow velocity pattern in 32 patients with aortic regurgitation (AR) and 10 patients without AR. The aortic regurgitant flow velocity patterns, characterized by a rapid rise in flow velocity immediately after closure of the aortic valve, high peak flow velocity, and a gradual deceleration until the next aortic va...

and Outcomes Repair of the Regurgitant Bicuspid or Tricuspid Aortic Valve: Background, Principles, Print ISSN: 0009-7322. Online ISSN: 1524-4539 Copyright © 2013 American Heart Association, Inc. All rights reserved. is published by the American Heart Association, 7272 Greenville Avenue, Dallas, TX 75231 Circulation doi: 10.1161/CIRCULATIONAHA.113.002475 2013;128:854-863 Circulation. http://circ...

AIMS To determine if decreasing arterial blood saturation from 95% to 90% could cause vasoconstriction of the pulmonary vasculature and dilatation of a patent ductus arteriosus in preterm newborn infants with respiratory distress syndrome (RDS). METHODS Doppler echocardiographic studies were compared at 95% and 90% pulse oxygen saturation (SpO2) in 13 preterm infants aged 61.7 (4.3) hours wit...

INTRODUCTION We sought to determine the effect of cardiac massage on a pre-existing regurgitant mitral valve during open-chest cardiopulmonary resuscitation (OCCPR) in an animal experiment. METHODS Our study included 29 dogs that were used as experimental models. We anesthetized them and inserted a transesophageal echocardiographic (TEE) probe. Then we performed a transverse thoracotomy, atte...

We analyzed tricuspid regurgitation noninvasively using ultrasonic pulsed Doppler and two-dimensional echocardiography in 66 patients in whom tricuspid regurgitation was suspected from routine clinical evaluation. All of the patients also underwent right ventriculography. Ten healthy subjects served as controls. In 62 of 66 patients, the study was adequately performed. In 58 of 62 patients, pan...

This research aims to study jet downstream scour model under the influence of changes of water level. It also studies and analyzes different parameters and components of diffusion of submerged jet flow in an acceptor fluid and scour hole dimensions. To achieve the objectives, a physical model was made in proportion to the research title. With the Froude number increasing in a nozzle discharge, ...

OBJECTIVE Changes in the pulmonary artery systolic pressure (PASP) and the dimensions of the right ventricle (RV) of the heart, six months after pneumonectomy, were evaluated in order to detect the influence of pneumonectomy on right heart function. METHODS 35 patients undergoing pneumonectomy (Group A) and 17 patients undergoing lobectomy or bilobectomy (Group B) were evaluated prospectively...

BACKGROUND Albuminuria is an early manifestation of sickle cell nephropathy. Prior small case series suggests benefit of hydroxyurea in reducing albuminuria, with a similar trend noted in pediatric studies. We aimed to comprehensively evaluate hydroxyurea use and prevalence of albuminuria in adult sickle cell patients. METHODS We performed a cross-sectional study of 149 adult patients followe...