Is it possible that before a person suffers a heart attack the organ may send out a cry for help which goes unheard because the sound is unaudible to the physician's stethoscope?
GV Operation room.
CU Dr. Mason holding mike.
M/CU Patient Mr. A.A. Mills.
CU Instruments attached patients ankles.
CU Instruments attached patients wrists.
Dr. Segal - monitoring rate & respiration of heart.
Mr. N.B. Burke operating filter system.
MS Patients & mike.
A medical student operating frequency.
General view operating theatre.
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Background: Is it possible that before a person suffers a heart attack the organ may send out a cry for help which goes unheard because the sound is unaudible to the physician's stethoscope?
Physicians at HAHNEMANN Medical College and Hospital in Philadelphia, U.S.A. this is possible, and they are conducting experiments along these lines. The hospital reported Feb 24 that test are being made on more than 500 patients with electronic microphones, designed to detect subsonic sounds. The experiments are being conducted by a team headed by Dr. Daniel Mason and Dr. Joseph F. Uricchio. "The most we can say at the moment is that the work now is in progress," said Dr. Mason.
The Physicians, by applying an ultra-sensitive microphone to the chest wall, have been able to pick up heart sounds in the range and intensity of 1 to 50 cycles per second. Most of these sounds are inaudible to the normal human ear even with the assistance of a stethoscope.
Researchers report the sounds form what appears to be a stranded pattern in normally functioning hearts. The pattern varies only with progressive age, researchers, therefore, have been able to set up normal patterns for age groups. It is hoped that this method eventually will permit physicians to detect departures from this norm in seemingly healthy individuals whose heart malfunction is hidden or incipient.