Perioperative Extracardiac Management in Low-flow States

Patients admitted to contemporary cardiac intensive care units (ICUs) increasingly present with complex low-flow states and multisystem organ dysfunction, particularly in the perioperative cardiac surgery setting. This article outlines a systematic, organ-based approach to optimizing extracardiac organ function in patients with shock, emphasizing respiratory, renal, vascular, neurologic, hematologic, gastrointestinal, and endocrine management. Key principles include understanding cardiopulmonary interactions, minimizing secondary organ injury, tailoring supportive therapies to physiologic profiles, and applying ICU best practices. Coordinated, multidisciplinary optimization of noncardiac organ systems is essential to improve surgical candidacy, reduce complications, and enhance outcomes in this high-risk population.