Accession Number : AD0700734

Title :   TWO ELECTRONIC STETHOSCOPES FOR USE IN HIGH-NOISE ENVIRONMENTS.

Descriptive Note : Final rept. May-Nov 68,

Corporate Author : SCHOOL OF AEROSPACE MEDICINE BROOKS AFB TEX

Personal Author(s) : Allred,James E. ; Brammell,Homer L. ; Hunt,Maureen A.

Report Date : OCT 1969

Pagination or Media Count : 12

Abstract : Two electronic stethoscopes were designed for use with litter and ambulatory patients on domestic and overseas aeromedical evacuation flights. The first, a frequency-translating stethoscope, utilizes both a frequency shift of the Korotkoff sounds and the elimination of all acoustic coupling. The second stethoscope, a direct electronic device, eliminates all acoustic coupling. Evaluation in high-noise environments and under actual flight conditions has demonstrated that the instruments are reliable and practicle. The stethoscopes are useful in any noisy area where it is necessary to obtain heart sounds or indirect measurements of blood pressure. (Author)

Descriptors :   (*CASUALTIES, EVACUATION), (*AIR TRANSPORTATION, MILITARY MEDICINE), (*AIRCRAFT NOISE, *MEDICAL EQUIPMENT), DESIGN, BLOOD PRESSURE, SOUND, HEART

Subject Categories : Medical Facilities, Equipment and Supplies
      Military Operations, Strategy and Tactics

Distribution Statement : APPROVED FOR PUBLIC RELEASE