Perioperative Management of Patients with Durable Left Ventricular Assist Devices Undergoing Non-Cardiac Surgery

Abstract

Patients receiving durable left ventricular assist devices (LVADs) for advanced heart failure present growing perioperative challenges, with nearly one-third undergoing non-cardiac procedures most often in emergent or urgent contexts. This article reviews critical management strategies, emphasizing the importance of multidisciplinary collaboration. Device characteristics and operating principles are detailed, focusing on pump types, control parameters, and unique physiological responses in LVAD-supported patients. Preoperative assessment entails comprehensive echocardiographic evaluation, management of coexisting implantable cardioverter defibrillators (ICDs), and tailored anticoagulation regimens. Warfarin discontinuation and perioperative heparin bridging, consideration of acquired von Willebrand syndrome, and preemptive transfusion planning are highlighted to address bleeding risks. Infection prevention includes strict sterile technique and timely administration of prophylactic antibiotics targeting skin flora and device-specific pathogens. Intraoperatively, vigilant monitoring of device parameters and hemodynamics, invasive arterial blood pressure assessment, and selection of anesthesia approaches are outlined. Special attention is given to LVAD preload and afterload dependencies, right ventricular support, positioning, and arrhythmia management. Acute complications, including suction events, device malfunction, and modified cardiopulmonary resuscitation protocols are addressed, underscoring differences from standard cardiac arrest care. The postoperative phase demands careful ICU management, prompt resumption of anticoagulation, and restoration of ICD settings. As LVAD utilization increases, non-cardiac anesthesiologists are required basic understanding in device physiology, monitoring, anticoagulation, and infection prevention to optimize outcomes for this complex patient population.