Title :
Noninvasive monitoring of colon blood flow
Author :
Gerstmann, Dale R. ; Waffarn, Fiezal
Author_Institution :
Southwest Found. for Biomed. Res., San Antonio, TX, USA
Abstract :
The applicability of using an inert tracer gas to measure intestinal blood flow is investigated. The results from studies carried out to demonstrate that the pulmonary clearance of an inert noncombustible gas (helium) instilled into the colon changes predictably with colon blood flow (CBF) are presented. The results indicate that pulmonary clearance of the tracer gas follows expected changes in colon blood flow during hypoxia, hypovolemic hypotension,and vascular occlusion and correlates well with colon blood flow measured by radiolabeled microspheres
Keywords :
flow measurement; haemodynamics; patient monitoring; colon blood flow; hypovolemic hypotension; hypoxia; inert noncombustible gas; noninvasive monitoring; pulmonary clearance; radiolabeled microspheres; tracer gas; vascular occlusion; Absorption; Biomedical measurements; Biomedical monitoring; Blood flow; Colon; Fluid flow measurement; Helium; Intestines; Physiology; Ventilation;
Conference_Titel :
Engineering in Medicine and Biology Society, 1989. Images of the Twenty-First Century., Proceedings of the Annual International Conference of the IEEE Engineering in
Conference_Location :
Seattle, WA
DOI :
10.1109/IEMBS.1989.96267
