Cardiogenic Shock in Restrictive Cardiomyopathies: What We Know So Far

Cardiogenic shock (CS) is a severe and life-threatening condition caused by the heart's inability to provide adequate blood flow, leading to systemic hypoperfusion and multiorgan dysfunction. While acute MI and heart failure with reduced ejection fraction are common causes of CS, restrictive cardiomyopathy (RCM) presents a unique challenge due to its underlying hemodynamic complexities related to myocardial stiffness. RCM is characterized by preserved systolic function but impaired ventricular filling, resulting in elevated diastolic pressures and a tendency for rapid decompensation into shock. This review explores the pathophysiology, diagnostic evaluation, and management of CS in RCM. Diagnostic tools such as echocardiography and hemodynamic monitoring are critical for differentiating the causes of CS. Treatment strategies focus on optimizing volume status, arrhythmia control, and, in some cases, mechanical circulatory support. Heart transplantation remains the definitive treatment for eligible patients. Early recognition and tailored interventions are essential for the enhancement of survival and quality of life in these critically ill patients.