نتایج جستجو برای: pulsatility index
تعداد نتایج: 396915 فیلتر نتایج به سال:
OBJECTIVE To study the effect of antihypertensive drugs in essential hypertension and in the central retinal, posterior ciliary, and ophthalmic arteries by using Doppler sonography. METHODS Thirty patients with essential hypertension and 32 control subjects were enrolled in the study. The pulsatility and resistive indices were evaluated in the central retinal, posterior ciliary, and ophthalmi...
Normal reference values for the resistance index, A/B ratio and pulsatility index of the umbilical artery obtained by Doppler ultrasonography are presented. The resistance index and A/B ratio values are very similar to those previously published, indicating no need to formulate normal values for different populations. The pulsatility index differed from other published values, probably reflecti...
OBJECTIVES: Doppler ultrasonography can be used to assess neoangiogenesis, a characteristic feature of postmolar gestational trophoblastic neoplasia. However, there is limited information on whether uterine artery Doppler flow velocimetry parameters can predict gestational trophoblastic neoplasia following a complete hydatidiform mole. The purpose of this study was as follows: 1) to compare ute...
OBJECTIVE To assess whether changes in the intraovarian vasculature or blood flow impedance can be used to identify potentially malignant masses. DESIGN Open, non-comparative prospective study. SETTING Ovarian screening clinics at King's College Hospital and the Hallam Medical Centre. SUBJECTS 50 Women selected on the basis of their medical history and the result of a previous transvagina...
Aortic stiffening, assessed by carotid-femoral pulse wave velocity, is associated with CKD. Transmission of excessive flow pulsatility into the low-impedance renal microvasculature may mediate this association. However, direct analyses of macrovascular-microvascular relations in the kidney are limited. Using arterial tonometry, iohexol clearance, and magnetic resonance imaging, we related arter...
Recent studies have shown that optical indices of cerebral pulsatility, including pulse amplitude, are linked to cerebrovascular health. A chronically higher pulsatility is associated with cognitive decline. Although it widely known regular physical activity improves functions, little about the association between and index pulsatility. This study assessed impact 12 months on changes in explore...
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