HEMODYNAMICS OF THE STOMACH. I. RESISTANCE-FLOW RELATIONSHIP IN THE GASTRIC VASCULAR BED
Abstract
A preparation is described for measuring the change in blood pressure gradient across the stomach of the dog in response to changes in blood flow. In 17 dogs pressure gradient responses were measured and vascular resistance calculated. The rise in pressure gradient was not proportionate to the increase in blood flow. Resistance, therefore, decreased as blood flow rose. The decline in resistance to increments in flow was especially marked till flow reached a rate of 70 ml. per minute. Beyond this flow the fall in resistance became slight. It appears that autoregulation does not occur to any appreciable degree in the gastric vascular bed of dogs as measured in the left gastric artery and coronary vein. When flow was lowered over the same range used in raising flow, pressu e values somewhat different were obtained suggesting a hysteresis effect. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 04, 1961
- Accession Number
- AD0264972
Entities
People
- E.d. Frohlich
- E.d. Jacobson
- J.b. Scott
Organizations
- United States Army Medical Research Laboratory