INTRODUCTION Pulmonary arterial hypertension (PAH) is a disease of the distal pulmonary arteries that results in an elevation in pulmonary arterial resistance and pressure [1]. Currently, right heart catheterization is the gold standard for assesment of PAH. The relative cross sectional area change (RAC) of the main pulmonary artery may be a useful non-invasive measure of PAH severity [2]. Here...

OBJECTIVE This study evaluated the efficiency and feasibility of dilatable bands in selected patients. METHODS Two types of dilatable handmade bands were retrospectively evaluated and divided into two groups: main pulmonary artery bands and bilateral branch pulmonary artery bands (hybrid stage I palliation). Stepwise balloon angioplasty (BA) was performed, increasing the diameter either to co...

BACKGROUND : To establish the reference range of the angle between ascending aorta and main pulmonary artery of fetus in the second and third trimester using spatiotemporal image correlation (STIC), and to investigate the value of this angle in prenatal screening of conotruncal defects (CTDs). MATERIALS AND METHODS Volume images of 311 normal fetuses along with 20 fetuses with congenital hear...

The cardiac abnormality most frequently found in rubella syndrome is a combination of branch pulmonary artery stenosis and patent ductus arteriosus, though isolated branch pulmonary artery stenosis is twice as common as isolated patent ductus arteriosus [1]. However, a wide variety of cardiac malformations may be produced, such as ventricular and atrial septal defects, stenosis of the pulmonary...

A23-year-old man who had had cardiac murmurs since childhood experienced heart arrest during exercise. Cardiac resuscitation and cardioversion of ventricular fibrillation rescued the patient. Subsequent work-up showed that the patient’s left coronary artery arose from the main pulmonary artery. Transesophageal echocardiography showed aneurysmal dilatation of the left coronary artery, which aros...

background: alveolar hypoxia induces monophasic pulmonary vasoconstriction in vivo, biphasic vasoconstriction in the isolated pulmonary artery, and controversial responses in the isolated perfused lung. pulmonary vascular responses to sustained alveolar hypoxia have not been addressed in the isolated perfused rat lung. in this study, we investigated the effect of sustained hypoxic ventilation o...

CONGENITAL stenosis of the pulmonary artery branches is an anomaly characterized by narrowed segments of one or more of the main or peripheral branches of the pulmonary artery. Such conditions lhave been variously labeled pulmonary coaretation,' peripheral pulmonary stenosis,2 and multiple peripheral stenoses 3 of the pulmonary artery. Several cases of this anomaly have appeared in the literatu...

We analyzed the flow velocity pattern in the main pulmonary artery after Fontan operation in patients with tricuspid atresia (n = 10) or with single ventricle (n = 10) by means of a catheter-mounted velocity probe. The area underneath the velocity signal of the forward flow was integrated, and ratios of the portions during atrial systole and during the diastolic phase to the total area (Fa and ...