A bizarre mechanism of aortic valve incompetence was observed when the occluder of a Braunwald-Cutter aortic valve prosthesis decreased in diameter, volume, and weight, and from time to time fell into the left ventricle. The patient's symptoms were palpitation, coughing, choking sensations, and fright. An operation disclosed a small, smooth ball with disrupted cloth on all the struts. The residual torn mesh was removed, and the ball was replaced.
(JAMA 235:2847-2848, 1976)
Kunstadt D, Adeyemo A, Clauss RH. Aortic Insufficiency: A Result of Intermittent Migration of Aortic Valve Prosthesis Poppet. JAMA. 1976;235(26):2847–2848. doi:10.1001/jama.1976.03260520041022
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