An 87-year-old woman with a history of trastuzumab-induced left ventricular dysfunction underwent the MitraClip (Abbott Vascular, Santa Clara, California) procedure for myxomatous mitral regurgitation. She presented a month later with severe intravascular hemolytic anemia, attributed to the MitraClip. She underwent surgical mitral valve replacement and had resolution of hemolysis. (
Level of Difficulty: Advanced.
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