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Auscultatory Clicks Produced by Pacemaker Catheters
- MYRON I. MURDOCK;
- BARBARA A. MEYERS; and
- JAMES M. BACOS, M.D., F.A.C.P.
- Requests for reprints should be addressed to James M. Bacos, M.D., Washington Hospital Center, 110 Irving St., N.W., Washington, D. C. 20010.
SUMMARY
A presystolic click produced by permanent intracardiac pacemaker catheters is described. Its pitch, timing, and respiratory variation preclude an intracardiac origin. Fluoroscopy shows that it is not due to diaphragmatic movement. It is concluded that the click is produced by pacemaker-induced contraction of the intercostal muscles of the left anterior chest wall.
Article and Author Information
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From the Department of Medicine, Washington Hospital Center and the George Washington University School of Medicine, Washington, D. C.
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This research was supported by grant 2 TI HE 5534-04, National Institutes of Health, Bethesda, Md.
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- Received January 8, 1968.
- Accepted January 18, 1968.
