Combined doppler and phased-array echocardiographic estimation of cardiac output.
Journal Article (Journal Article)
The capability of a pulsed Doppler flowmeter combined with a phased-array imaging system to measure volume flow was tested in vitro and in patients undergoing cardiac catheterization. The Doppler-phased-array system (DPA) was used to determine vessel diameter and a superimposed cursor was used to locate the range and angle of the Doppler sample volume. DPA estimates of continuous flow through tubing in a water tank correlated strongly (r = 0.99) with measured flow corresponding to physiologic ranges from 3-12 l/min. For pulsatile flow in a water tank, a correlation of r = 0.86 with measured flow was obtained, whereas DPA estimates of cardiac outputs compared with Fick estimates in the 11 patients produced a correlation of r = 0.83. These data indicate that estimates of cardiac output are possible using the DPA approach.
- Magnin, PA; Stewart, JA; Myers, S; von Ramm, O; Kisslo, JA
- February 1, 1981
Volume / Issue
- 63 / 2
Start / End Page
- 388 - 392
International Standard Serial Number (ISSN)
Digital Object Identifier (DOI)
- United States