BACKGROUND To determine the effect of vasovagally mediated syncope on the cerebral circulation, transcranial Doppler sonography was used to assess changes in cerebral blood flow velocity during head-upright tilt-induced syncope. METHODS AND RESULTS Thirty patients (17 men and 13 women; mean age, 43 +/- 22 years) with recurrent unexplained syncope were evaluated by use of an upright tilt-table...

INTRODUCTION Asoprisnil, a novel orally active selective progesterone receptor modulator, is being studied for the management of symptomatic uterine leiomyomata. The exact mechanism of action is not yet discerned. The primary objectives of this double-blind, randomized, placebo-controlled study included evaluation of the effect of asoprisnil on uterine artery blood flow. Furthermore, we assesse...

OBJECTIVE To compare the effectiveness of letrozole and clomiphene citrate (CC) on uterine blood flow rate in patients with unexplained infertility. MATERIALS AND METHODS In this randomized clinical trial 90 women with unexplained infertility referred to a university clinic from January 2011- December 2013 were enrolled. Thirty patients were randomized for letrozole, 30 patients for CC and 3o...

Background: A novel way to assess the autonomic vascular functional unit of the upper extremity is the sympathetic vasomotor response of the radial artery using continuous wave Doppler ultrasonography. We used this method to determine whether such response is impaired in patients with end stage renal disease (ESRD). Methods: 43 patients with ESRD on renal replacement therapy(Ga), 48 normal heal...

The study aimed at Aim evaluation the cerebral hemodynamics in cirrhotic patients by transcranial Doppler ultrasonography and its relation to hepatic encephalopathy. This study is a prospective study , 50 subjects attended El Hussein university hospital, inpatient and outpatient clinic are classified into three groups, group I(10 subjects as a healthy control),group II (20 subjects with liver c...

BACKGROUND Lacunar infarcts may be caused by macro- or microvascular disease due to several mechanisms. AIM This study aims to demonstrate that retinal vascular disturbances in patients with lacunar infarcts associated with neuroimaging and ultrasound markers can help to identify small-vessel disease. METHODS Prospective ambulatory study of patients with ischaemic stroke and a control group...