Training residents in mitral valve surgery

Area of Science:

• Cardiovascular Surgery
• Surgical Education
• Patient Outcomes

Background:

• The safety and impact of resident training in complex cardiac procedures, specifically mitral valve surgery, on patient outcomes remain largely unexamined.
• Existing literature lacks clarity on whether resident involvement in mitral valve surgery affects patient safety and results.

Purpose of the Study:

• To compare patient outcomes, including operative mortality and composite morbidity, for mitral valve procedures performed by surgical residents versus experienced staff surgeons.
• To determine if resident-performed mitral valve surgery is associated with adverse patient outcomes.

Main Methods:

• A comparative analysis of all mitral valve procedures performed by residents and staff surgeons between 1998 and 2003.
• Multivariate analysis and propensity score matching were used to compare operative mortality and a composite morbidity endpoint (reoperation for bleeding, myocardial infarction, infection, stroke, or prolonged ventilation).

Main Results:

• No significant differences in crude operative mortality were observed between resident (5.4%) and staff (4.7%) performed isolated mitral procedures.
• Composite morbidity outcomes were similar between residents (29.7%) and staff (35.3%), with multivariate analysis showing no association between resident performance and adverse outcomes (OR 0.80).
• Propensity score-matched analysis revealed comparable rates of mortality (7.4% vs. 8.7%), stroke (4.0% vs. 6.7%), and reoperation for bleeding (4.7% vs. 9.4%) between resident and staff cases.

Conclusions:

• Mitral valve surgery performed by residents demonstrated no significant differences in morbidity and mortality compared to procedures conducted by staff surgeons.
• These findings suggest that residents can be trained to perform complex cardiac procedures, including mitral valve surgery, without compromising patient safety or outcomes.