1. Portal veins, vena cavae and pulmonary arteries from spontaneously hypertensive (SH) rats were found to undergo medial smooth-muscle hypertrophy when compared with corresponding blood vessels from ageand sex-matched WisterKyoto (WKy) normotensive rats. There was an increase in the density of the mucopolysaccharide and glycoprotein staining in veins, pulmonary arteries vena venorum and ventri...

Background. This study investigates the effects of sodium nitroprusside on regional vascular capacitance in eight patients with severe congestive heart failure (New York Heart Association class IV) and pulmonary hypertension. Methods and Results. Regional relative blood volumes in the splanchnic and pulmonary region were determined by equilibrium blood pool scintigraphy. Hepatic venous wedge pr...

BACKGROUND This study investigates the effects of sodium nitroprusside on regional vascular capacitance in eight patients with severe congestive heart failure (New York Heart Association class IV) and pulmonary hypertension. METHODS AND RESULTS Regional relative blood volumes in the splanchnic and pulmonary region were determined by equilibrium blood pool scintigraphy. Hepatic venous wedge pr...

In this paper, we propose a method to classify pulmonary artery and vein in chest X-ray CT images automatically. When a doctor discriminates between benign or malignant of lung tumors, kind of pulmonary blood vessels which are involved in tumors is very important. However there is no difference on CT values. So it is difficult to classify vessels based on CT values. Our method uses anatomical p...

conclusions alterations were present in both the aspect and spacing of collagen fibrils and in the shape of elastic fibers. the present familial combination of scad and edsh, with almost similar ultrastructural features suggests a possible connection between both conditions. case presentation we present a woman with scad and her five close relatives showing obvious or suggestive signs of edsh. ...

Pulmonary congenital abnormalities are rare disorders including congenital pulmonary airway malformations (CPAM) and pulmonary sequestration (PS). CPAM is a lesion characterized by the presence of anomalous bronchiolar or acinar structures, variable in size, either cystic or not cystic. PS is generally defined as nonfunctioning lung tissue that is not in normal continuity with the tracheobronch...

T HE capacity of small pulmonary blood vessels for vasoconstriction remains a controversial subject.1 2 Evidence is accumulating which suggests that at least under abnormal circumstances vasoconstriction of the pulmonary vascular bed may occur.3 The following is a report on changes in pulmonary arteriolar resistance (PAR) during norepinephrine infusion based on simultaneous measurements of bloo...

INTRODUCTION Pulmonary arteriovenous malformations are a common cause of progressive cyanosis in children after cavopulmonary anastomoses. We analyzed the pulmonary histologic characteristics from children in whom pulmonary arteriovenous malformations developed after procedures that resulted in pulmonary arterial blood flow devoid of hepatic venous effluent. METHODS We performed routine histo...

The morphological development that accompanies increasing pulmonary blood flow and decreasing pulmonary vascular resistance with advancing gestational age has not been delineated. To study this point we developed a method of comparing pulmonary arterial vessels of the same generations in fetal lambs. Pulmonary arteries were perfused with glutaraldehyde solution at pressures appropriate for gest...