Aortic Blood Flow Measurement

Publisher Website
Google Scholar
Abstract
Aortic blood flow (ABF) was measured with a specially designed ultrasonic probe (diameter 6.8 mm, length 50 cm) introduced into the esophagus. The aortic diameter was measured using an A-scan system. Mean blood velocity was obtained with a continuous-wave Doppler velocimeter. The ABF was calculated from these two parameters. The precision of the measurement was assured by the external orientation of the transducers enclosed in a latex water-inflated balloon. A reproducibility study was conducted by a double-blind method. The differences between different operators were less than 5 % in a series of 11 patients. In over 21 patients, 300 comparative measurements with thermodilution showed a correlation coefficient of 0.97. Using this technique the hemodynamic effects of ornithine-vasopressin and etilefrin were compared in two groups of 6 female patients under general anesthesia, during local injection, for conization of the uterine cervix. After injection, systolic blood pressure rose 31 and 29 % (p

This publication has 0 references indexed in Scilit: