Cardiogenic shock caused by right ventricular infarction: A report from the SHOCK registry

Abstract Objectives The purpose of this study was to determine the characteristics and outcomes of patients with acute myocardial infarction (MI) complicated by cardiogenic shock due to predominant right ventricular (RV) infarction. Background Although RV infarction has been shown to have favorable long-term outcomes, the influence of RV infarction on mortality in cardiogenic shock is unknown. Methods We evaluated 933 patients in cardiogenic shock due to predominant RV (n = 49) or left ventricular (LV) failure (n = 884) in the SHould we emergently revascularize Occluded coronaries for Cardiogenic shocK? (SHOCK) trial registry. Results Patients with predominant RV shock were younger, with a lower prevalence of previous MI (25.5 vs. 40.1%, p = 0.047), anterior MI, and multivessel disease (34.8 vs. 77.8%, p Conclusions Despite the younger age, lower rate of anterior MI, and higher prevalence of single-vessel coronary disease of RV compared with LV shock patients, and their similar benefit from revascularization, mortality is unexpectedly high in patients with predominant RV shock and similar to patients with LV shock.