Relation between serum creatinine and postoperative results of open-heart surgery

Area of Science:

• Cardiology
• Nephrology
• Surgical Outcomes

Background:

• Preoperative renal function is crucial for patients undergoing cardiac surgery.
• Serum creatinine is a primary indicator of kidney function.

Purpose of the Study:

• To assess the relationship between preoperative serum creatinine levels and postoperative outcomes in non-dialysis patients.
• To identify the predictive value of serum creatinine for morbidity and mortality after cardiac operations.

Main Methods:

• Prospective study of 1,033 patients undergoing coronary artery bypass grafting or valve surgery.
• Serum creatinine measured preoperatively to assess renal function.
• Statistical analysis using Chi-square test and multivariable logistic regression.

Main Results:

• Elevated serum creatinine (>1.8 mg/dL) correlated with increased postoperative mortality (p<0.0005).
• High creatinine levels predicted higher risks of re-operation for bleeding, renal failure, prolonged ventilation, and extended ICU and hospital stays.

Conclusions:

• Perioperative serum creatinine is a strong predictor of postoperative morbidity and mortality in open heart surgery.
• Elevated serum creatinine in non-dialysis patients signals heightened risks following cardiac procedures.