Early Outcomes of Low Postoperative Bleeding after Off-Pump Coronary Artery Bypass Grafting

Area of Science:

• Cardiovascular Surgery
• Anesthesiology
• Critical Care Medicine

Background:

• Off-pump coronary artery bypass grafting (CABG) is a surgical procedure to improve blood flow to the heart.
• Postoperative bleeding is a common complication that can impact patient outcomes.
• Understanding the influence of bleeding volume on early recovery is crucial for optimizing patient care.

Purpose of the Study:

• To investigate the relationship between low postoperative bleeding and early outcomes in patients undergoing off-pump CABG.
• To determine if reduced bleeding volume correlates with improved patient recovery metrics.

Main Methods:

• Retrospective analysis of ischemic heart disease patients who underwent off-pump CABG between January 2013 and December 2017.
• Patients were categorized into low-bleeding (<300 ml/12h) and bleeding (≥300 ml/12h) groups based on chest tube drainage.
• Comparison of clinical characteristics and early postoperative outcomes between the two groups.

Main Results:

• The low-bleeding group exhibited significantly shorter mechanical ventilation times (6.86±3.78 h vs. 10.66±5.19 h) and more stable hemodynamics.
• Lower rates of vasoactive agent use were observed in the low-bleeding group.
• No significant differences were found in reoperation for bleeding, ICU stay, or hospital stay between groups.

Conclusions:

• Postoperative bleeding less than 300 ml/12h in off-pump CABG patients is not associated with increased need for blood transfusion or reoperation.
• Reduced bleeding volume (<300 ml/12h) contributes to decreased mechanical ventilation time and enhanced hemodynamic stability.
• Bleeding volumes up to 800 ml/12h did not negatively impact infection rates or ICU length of stay.