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Training residents in mitral valve surgery.

Roger J F Baskett1, Dimitri Kalavrouziotis, Karen J Buth

  • 1The Maritime Heart Center, Halifax, Nova Scotia, Canada. rogerbaskett@hotmail.com

The Annals of Thoracic Surgery
|October 7, 2004
PubMed
Summary

Resident-performed mitral valve surgery showed no significant difference in patient outcomes compared to procedures done by staff surgeons. Training residents in complex cardiac surgery is safe and does not adversely affect patient morbidity or mortality.

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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).

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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.