J. S. Gilson, M.D., F.A.C.P.
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In the course of clinical trials using the Electrocardiocorder, (AVSEP)® analysis devices developed at the Holter Research Foundation Laboratory in Helena, Montana, we have accumulated 40 recording periods of 5 hours each on 30 patients having, or seriously suspected of having angina pectoris. The Electrocardiocorder records electrocardiographic potentials on slowly moving tape; AVSEP rapidly superimposes each successive PQRST pattern as projected on an oscilloscopic screen so that changing PQRST patterns form a "fast-motion" movie.
We have identified clear examples of subclinical angina by observing anginal AVSEP patterns in patients with and without pain, under separate, but similar circumstances. We have
Gilson JS. Electrocardiocorder—AVSEP Patterns as Seen in Angina Pectoris.. Ann Intern Med. ;58:716. doi: 10.7326/0003-4819-58-4-716_3
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Published: Ann Intern Med. 1963;58(4):716.
Cardiology, Coronary Heart Disease.
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