This study attempted to evaluate the relative roles of vessel distensibility and vessel recruitment in the changes in pulmonary blood volume induced by changes in pulmonary intravascular pressure. Pulmonary blood volume was determined by a double-injection indicator-dilution technique in eight anesthetized open-chest dogs with a right and left ventricular bypass which allowed independent contro...

Background Right ventricular-pulmonary arterial coupling plays an important role in the occurrence of right ventricular failure. Ventricular-arterial coupling is defined as Ea/ Emax. Ea is the effective arterial elastance and an index of the post-load, and includes vascular resistances, vessel compliance, vascular impedance, systolic and diastolic time intervals. Ea = (arterial end-systolic pre...

Aims: To evaluate whether determination of the central retinal artery and vein collapse pressure correlate with systemic blood pressure measurements, using a new Goldmann contact lens associated ophthalmodynamometric device Methods: The prospective clinical study included 92 eyes of 92 patients presenting with cataract or refractive problems (n = 40; control study group) or with retinal and orb...

AIMS To evaluate whether determination of the central retinal artery and vein collapse pressure correlate with systemic blood pressure measurements, using a new Goldmann contact lens associated ophthalmodynamometric device METHODS The prospective clinical study included 92 eyes of 92 patients presenting with cataract or refractive problems (n = 40; control study group) or with retinal and orb...

Abstract Background and Objective: Obesity is an important risk factor for development of hypertension. We investigated the association between body mass index (BMI) and blood pressure in adolescents. Methods: The cross-sectional study was performed on 694 adolescents aged 12-18 years from middle and high schools located in 4 districts of Shiraz, Iran. Height, weight, and systolic and diastolic...

purpose : to investigate the association of primary open angle glaucoma (poag) and systemic hypertension in patients referred to farabi eye hospital methods : in this case-control study in farabi eye hospital. one hundred patients were selected randomly from poag patients of glaucoma clinic, farabi eye hospital. control group consists of 100 patients, candidates for cataract surgery. history of...

The Literature review indicates that the high blood pressure has a different prevalence in various population of Iran and in the age group of 35 and above the rate varies from 7% in Qushguai tribe to 30% in Teheran and Anzali. The purpose of this study is to know whether the essential hypertension begins at the early age of life; and also to standardizing the normal value of blood pressure in c...

Background: Hypertension is one of the prevalent and dangerous complications of diabetes mellitus. As it is difficult to control hypertension, the necessity of using new techniques such as non-pharmaceutical methods and complementary therapy increased. This study aimed to determine the effect of aerobic exercise on the blood pressure of patients with type 2 diabetes. Methods: This study was a ...

Background: It is shown that hypertension may affect androgens. The role of blood pressure on sperm parameters is matter of debate. The main goal was to evaluate the probable association between systolic and diastolic blood pressure and sperm parameters. Materials and Methods: Semen Sample of men (aged: 27- 45 years old) from 40 infertile cases who attended at Yazd research and clinical center ...

Twelve patients with acute myocardial infarction and radiological evidence of pulmonary oedema were observed in whom the left atrial pressure, measured indirectly as pulmonary artery end-diastolic pressure, was not critically increased (range 5-12 mm Hg with reference to sternal angle). Eight of the patients had been treated with frusemide, but only six had responded: hence in at least half of ...