Accession Number:

ADA008974

Title:

The Contributions of Abdominal and Leg Compartments to the Cardiovascular Response to Lower Body Negative Pressure (LBNP),

Descriptive Note:

Corporate Author:

FLYING PERSONNEL RESEARCH COMMITTEE LONDON (ENGLAND)

Personal Author(s):

• Glaisier,D. H.
• Crossley,R. J.

Report Date:

1974-09-01

Pagination or Media Count:

33.0

Abstract:

The contributions made by the abdomen and the legs to the overall response to lower body negative pressure were evaluated separately, using a specially designed box. Heart rate, forearm blood flow, oesophageal pressure and right heart filling pressure were measured in 5 subjects during 5 min exposures to pressures of -30, -60 and -90 torr applied either to the legs, to the abdomen, or to both compartments together. In addition, cardiac output, stroke volume, central blood volume, systemic arterial pressure and systemic vascular resistance were measured in two of the subjects during similar exposures to LBNP. With the exception of changes in oesophageal pressure, leg suction had a significantly greater effect than abdominal suction, and combined suction was generally additive.

Descriptors:

• *STRESS(PHYSIOLOGY)
• *GRAVITY
• *CARDIOVASCULAR SYSTEM
• EXPERIMENTAL DATA
• MONITORING
• HEART
• ABDOMEN
• BLOOD PRESSURE
• LEGS
• AVIATION MEDICINE
• UNITED KINGDOM

Subject Categories:

• Stress Physiology

Distribution Statement:

APPROVED FOR PUBLIC RELEASE