Intraaortic balloon pressure tracings

One minute following temporary discontinuation of counterpulsation in a patient with three-vessel coronary artery disease, left main coronary artery stenosis, and severe unstable angina, there is a prompt increase in left ventricular systolic and end-diastolic pressure with rapid return of ischemic pain (A). Left ventricular (LV) and pulmonary capillary wedge (PCW) tracings without (B) and with (C) intraaortic balloon counterpulsation in a 45-year-old woman in cardiogenic shock from ruptured chordae of the mitral valve.