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The Journal of Thoracic and Cardiovascular Surgery, Vol 79, 822-826, Copyright © 1980 by The American Association for Thoracic Surgery and The Western Thoracic Surgical Association

ARTICLES

Unilateral sudden loss of hearing: an unusual complication of cardiac operation

HM Plasse, FC Spencer, M Mittleman and JO Frost

Between 1969 and 1978 7,000 patients underwent cardiopulmonary bypass at Bellevue and University Hospitals. In seven of these patients, sudden loss of hearing in one ear developed immediately after the operation. Four of the seven patients showed improvement in hearing after the initial loss, although in no case did the hearing return completely to normal. None of the patients had vertigo but two were listless postoperatively. Two of the operations were for congenital heart disease; the remainder were coronary artery bypass procedures. All of the affected patients were male. There was no predilection as to which ear was affected. The most likely cause is particulate emboli generated by cardiopulmonary bypass. Other possible sources of emboli include air, antifoam, fat, and particulate matter from calcified valves and the aorta. Improvement in the kind of pump and the addition of various filters in the period between 1969 and 1978 did not eliminate unilateral hearing loss. The relationship between cerebral emboli and decreased consciousness after operations is also discussed.


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G. Bruschi, G. Tarelli, P. Colombo, G. Cavallazzi, A. Cannata, A. Garatti, and E. Vitali
Effectiveness of Hyperbaric Oxygen Therapy for Hearing Loss After Cardiac Surgery
Ann. Thorac. Surg., May 1, 2007; 83(5): e9 - e10.
[Abstract] [Full Text] [PDF]


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