Gender Gaps in Cardiothoracic Surgery: Are Patient Outcomes Shaped by Workforce Inequity?

Background: Gender disparities persist across cardiac and thoracic surgical care, influencing access, procedural selection, perioperative risk, and long-term outcomes. Despite major advances in operative technique and perioperative pathways, women continue to experience delayed diagnosis, lower procedural referral rates, and distinct complication profiles after high-risk procedures, including coronary artery bypass grafting (CABG), percutaneous coronary intervention (PCI), surgical aortic valve replacement (SAVR), transcatheter aortic valve replacement (TAVR), and transcatheter edge-to-edge repair (TEER). These patient-level disparities parallel persistent inequities within the cardiothoracic surgery workforce, raising the possibility that structural workforce imbalances may influence clinical outcomes. Objective: This study aimed to synthesize contemporary evidence (2020-2025) characterizing sex- and gender-based disparities across cardiac and thoracic surgery, identify interconnected root causes, and outline strategies and research priorities for reducing inequities. Methods: A narrative review (2020-2025) combined structured database searches of trials and registries with synthesis of mechanistic and health-system literature to interpret heterogeneous evidence. Results: Women undergoing cardiothoracic procedures often present at older age with greater frailty, smaller anatomical dimensions, and more atypical symptoms, increasing procedural complexity and perioperative risk. CABG and SAVR show higher early morbidity in women, while PCI disparities have narrowed but persist due to delayed recognition; TAVR demonstrates higher early complications yet better mid- and long-term survival. In thoracic surgery, women generally have lower perioperative mortality, but experience delayed diagnosis, lower screening rates, and reduced use of minimally invasive approaches. These outcome differences occur alongside persistent workforce inequities, including the underrepresentation of women in surgical practice, leadership, and academia. Conclusion: Gender disparities in cardiac and thoracic surgery are multifactorial and closely intertwined with systemic workforce inequities. Solutions require sex-aware risk assessment, equitable referral pathways, inclusive device development, mandated sex-stratified reporting, and targeted workforce reforms. Addressing both patient-level and structural contributors is essential to achieve durable gender equity in cardiothoracic surgical care.