Early Reexploration for Bleeding Is Associated With Improved Outcome in Cardiac Surgery

Area of Science:

• Cardiovascular Surgery
• Surgical Quality Metrics
• Postoperative Complications

Background:

• Reexploration for bleeding after cardiac surgery is a key quality metric.
• Surgeons may delay reoperation due to performance metric pressures, opting for nonoperative management.
• This study examines the impact of reexploration timing on patient outcomes.

Purpose of the Study:

• To investigate the relationship between the timing of reexploration for postoperative bleeding and patient morbidity and mortality.
• To identify optimal timeframes for reoperation to mitigate adverse outcomes.
• To assess the influence of reoperation as a quality metric on surgical decision-making.

Main Methods:

• Retrospective review of adult cardiac surgery patients (July 2010 - June 2020).
• Analysis of time to reexploration and comparison of outcomes across intervals.
• Classification of bleeding sites and comparison of bleeding rates; statistical analysis using Fisher exact, Kruskal-Wallis, and multivariable logistic regression.

Main Results:

• 2.5% of patients (251/10,070) required reexploration for bleeding.
• Highest bleeding rates observed from "any mediastinal structure"; "any suture line" was the most common site.
• Morbidity (12.3% vs 37.5%) and mortality (3.1% vs 43.8%) significantly increased with delayed reexploration (0-4 hours vs 25-48 hours).

Conclusions:

• Delayed reexploration for postoperative bleeding after cardiac surgery is linked to higher morbidity and mortality.
• Early surgical intervention, within 4 hours, appears to improve patient outcomes.
• Using reoperation as a performance metric may inadvertently lead to harmful delays in patient care.