نتایج جستجو برای: pulsatility index

تعداد نتایج: 396915  

Background Preeclampsia is a specific pregnancy syndrome. Early diagnosis and proper administration of preeclampsia can lead to improved maternal and neonatal outcome. We aimed to investigate the uterine artery Doppler ultrasound in predicting the preeclampsia in women with a high-risk pregnancy. Materials and Methods This analytic study was conducted on 160 primigravida women with gestational...

Journal: :Archives of surgery 2000
K T Delis A N Nicolaides G Stansby

HYPOTHESIS Marked peripheral vasodilation and rubor characterize critically ischemic limbs on dependency. We believe that intermittent claudication is also associated with peripheral hemodynamic changes on postural alteration, which differ distinctly from normal. Evaluation of such differences and understanding of the underlying physiological derangements may be essential in the development of ...

2003
C. Zuhal ERDEM Ceyda ACUN Oktay ERDEM Zuhal Erdem

Materials and Methods: Peak systolic velocity and end diastolic velocity were measured by the duplex Doppler ultrasonography in the anterior and median cerebral arteries in 60 asphyxiated and 50 healty term infants in the first five days of life. Resistive index and pulsatility index values were calculated. T test and Mann-Whitney test was used for statistical analysis to compare asphy xiated a...

2016
Selim Bozkurt Frans N. van de Vosse Marcel C. M. Rutten

Continuous-flow left ventricular assist devices (CF-LVADs) generally operate at a constant speed, which reduces pulsatility in the arteries and may lead to complications such as functional changes in the vascular system, gastrointestinal bleeding, or both. The purpose of this study is to increase the arterial pulse pressure and pulsatility by controlling the CF-LVAD flow rate. A MicroMed DeBake...

Journal: :Cerebrovascular diseases 2012
J M Albers H Pavenstaedt C Dlugos P Lebiedz E B Ringelstein R Dittrich M A Ritter

In patients with HUS-N, TCD showed only slightly increased blood flow velocities of basal brain arteries ( table 1 ). However, the mean resistance index (RI) and in particular the mean pulsatility index (PI) were significantly increased in patients with HUS-N, compared to HUS patients without neurological symptoms (mean PI/RI 1.11/0.62 vs. PI/RI 0.72/0.48, p ! 0.001, Mann Whitney U test; table ...

Journal: :Asian Journal of Pharmaceutical and Clinical Research 2023

Objectives: The aim of the study was to establish normative data for pulsatility index (PI), resistive index, and cerebro placental ratio umbilical artery (UA), fetal middle cerebral (MCA) Indian pregnant women in third trimester pregnancy using multiples median percentile reference range. Methods: It a cross-sectional study; carried out at Department Obstetrics Gynaecology Radiology MGM Medica...

2016
Mahmut Güden Mehmet Özgür Akkurt Serenat Eriş Yalçın Bora Coşkun Iltaç Akkurt And Yavuz Bülent Yirci Necmi Ömer Kandemir

OBJECTIVE To investigate the effects of two tocolytics, nifedipine and magnesium sulfate, on Doppler indices in maternal and fetal vessels. MATERIALS AND METHODS We recruited 100 pregnant women with preterm birth between 24-36 gestational weeks who were admitted to our tertiary center over a two-year period. Patients were allocated to nifedipine (n=49) and magnesium sulfate (n=51) groups and ...

Journal: :Ultrasound in obstetrics & gynecology : the official journal of the International Society of Ultrasound in Obstetrics and Gynecology 2002
M Tchirikov C Rybakowski B Hüneke V Schoder H J Schröder

OBJECTIVE To assess the diagnostic power of the umbilical venous-arterial index (VAI) for the prediction of poor fetal outcome. SUBJECTS AND METHODS This was a retrospective, cross-sectional clinical study in which normalized umbilical vein blood volume flow rate (nUV) (mL/min/kg estimated body weight), umbilical artery pulsatility index (UAPI), the newly developed VAI (nUV/UAPI), and the ute...

2014
Dr. Subramani Dr. Shobha

Aim: The aim of this prospective study was to determine and compare the various parameters and indices of portal vein, hepatic artery and splenic artery by sonographic Doppler imaging in chronic hepatitis C patients and healthy individuals.Methods: 45 Chronic Hepatitis C patients and 90 Healthy adults formed two groups. All participants underwent color Doppler imaging of the portal vein, hepati...

Journal: :Radiologia 2012
R Ramírez-Vélez A García Sánchez C J Martínez Betancourt C A Parra Galeano J G Ortega C A López Alban R A Agredo Zúñiga

OBJECTIVE Recently, non-pharmacological resources to relieve pain like hot packs and ultrasound (US) have become common in clinical practice. However, little experimental evidence is available about the possible mechanisms through which these methods bring about pain relief. We aimed to determine the effects of hot packs and US on the acute vascular response and on hemodynamic parameters in hea...

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