@Article{Stachowiak2002,
journal="Menopause Review/Przegląd Menopauzalny",
issn="1643-8876",
volume="1",
number="4",
year="2002",
title="Flow parameters in the vertebrobasilar system evaluated by Doppler ultrasonography in women and their dependence upon age",
abstract=" Objectives:  to assess flow parameters in the vertebrobasilar system in women using Doppler ultrasonography and to evaluate dependence of changes in haemodynamics on age.   Material and method:  314 women aged 18\–72 (mean 49.8) free from cardiologic or neurologic disorders were examined between 1998\–2001. The examinations of vertebral arteries were performed using Color-Coded option and linear probes 7\–9 MHz (GE Logic 500) and 5 MHz (Acuson 128 XP-10). Peak-systolic (Vmax) and end-diastolic (Vmin) velocities were measured and resistance index (RI) was calculated. Patients were divided in 10-years groups and for each group mean values and standard deviation were assessed.   Results:   Flow velocities declined in consecutive age groups, decrease of Vmax predominated. The decline of Vmax was remarkable up to the age of 55 years (mean value from 84 cm/s in 18\–25 group to 61 cm/s in 46\–55 group). The resistance index declined with age, reaching its minimum of 0.67 (mean value) in 46\–55 group.   Conclusions:  Flow velocities in vertebrobasilar system are age-dependent. Velocities decline with age, decrease of Vmax predominates. Resistance index is relatively high in young and elderly patients and reaches minimum in middle-age women.",
author="Stachowiak, Grzegorz
and Stefańczyk, Ludomir
and Mysior, Marek",
pages="31--34",
url="https://www.termedia.pl/Flow-parameters-in-the-vertebrobasilar-system-evaluated-by-Doppler-ultrasonography-in-women-and-their-dependence-upon-age,4,2010,1,1.html"
}