Accession Number : ADA316940

Title :   Cardiac Pacing in a Chronically Instrumented Non-Human Primate Model During Centrifuge,

Corporate Author : ARMSTRONG LAB BROOKS AFB TX AEROSPACE MEDICINE DIRECTORATE

Personal Author(s) : Koenig, S. C. ; Reister, Craig ; Schtaub, J. ; Muniz, Gary ; Fergusan, Tim

PDF Url : ADA316940

Report Date : OCT 1996

Pagination or Media Count : 3

Abstract : The Physiology Research Branch has developed a chronically instrumented non-human primate model for evaluating cardiac function during exposure to altered gravitational environments. This model has been used to measure cardiovascular hemodynamics and electrical activity. We have expanded the model to include cardiac pacing for evaluation of responses and mechanisms in normal and dysrhythmic states. In particular, we have been able to produce constant rates by means of atrial, ventricular, and dual chamber pacing during centrifugation. Preventricular contractions, bigeminal, and trigeminal rhythms have also been invoked using the same pacing model.

Descriptors :   *PRIMATES, *BIOLOGICAL DETECTION, *CARDIOVASCULAR SYSTEM, RATES, ELECTRICAL PROPERTIES, PHYSIOLOGY, EXPOSURE(PHYSIOLOGY), CHAMBERS, GRAVITATIONAL FIELDS, CARDIAC ARREST.

Subject Categories : Medicine and Medical Research

Distribution Statement : APPROVED FOR PUBLIC RELEASE