Accession Number:

AD0641017

Title:

DESIGN AND DEVELOPMENT OF AN AUTOMATIC INDIRECT BLOOD PRESSURE MONITORING DEVICE

Descriptive Note:

Rept. for Feb-Dec 1964

Corporate Author:

SCHOOL OF AEROSPACE MEDICINE BROOKS AFB TX

Personal Author(s):

• Allred, James E.
• Johnson, Jack B.

Report Date:

1966-09-01

Pagination or Media Count:

14.0

Abstract:

The design of an automatic electronic blood pressure recording device is described. This device, which applied pressure only slightly higher than the systolic pressure of the subject, is programed to record the Korotkoff sounds while the occlusion cuff is being inflated. The system may be programed to monitor blood pressure at any predetermined rate from intervals of one minute to several minutes, or it may be initiated manually. Proper design of circuitry for maximum signal-to-noise ratio required a knowledge of the frequency range of the complex Korotkoff sound waveform. This information was obtained by recording the K sounds from four subjects and analyzing the waveforms for energy content vs. frequency. These data are also presented.

Descriptors:

• *ELECTRONIC RECORDING SYSTEMS
• FREQUENCY
• MONITORS
• AUTOMATIC
• BLOOD PRESSURE
• EXERCISE(PHYSIOLOGY)

Subject Categories:

• Anatomy and Physiology
• Medical Facilities, Equipment and Supplies

Distribution Statement:

APPROVED FOR PUBLIC RELEASE