Determining the Optimal Quantitative Threshold for Preoperative Albumin Level Before Elective Colorectal Surgery

Area of Science:

• Surgical outcomes research
• Clinical chemistry
• Patient risk stratification

Background:

• Hypoalbuminemia is a known risk factor for adverse surgical outcomes.
• The precise albumin threshold impacting colorectal surgery outcomes is not well-defined.

Purpose of the Study:

• To determine the optimal preoperative serum albumin threshold associated with improved outcomes in elective colorectal surgery.
• To evaluate the impact of incrementally decreasing albumin levels on complication rates.

Main Methods:

• Analysis of the 2011-2013 National Surgical Quality Improvement Program (NSQIP) dataset.
• Inclusion of patients undergoing elective colorectal surgery.
• Multivariable regression with restricted cubic splines (RCS) to assess the association between preoperative serum albumin and complications.

Main Results:

• Analysis of 16,145 patients revealed an inflection point at a serum albumin level of 3.9 mg/dL.
• Preoperative albumin <3.9 mg/dL was associated with a higher likelihood of major complications (OR=1.18) and any complications (OR=1.18).
• Lower albumin levels correlated with increased complication risk and longer hospital stays (p<0.001).

Conclusions:

• A preoperative serum albumin threshold of ≥3.9 mg/dL is objectively associated with improved outcomes in elective colorectal surgery.
• Progressive decreases in albumin levels are linked to escalating complication risks.
• Establishing this minimum albumin threshold aids in perioperative optimization for colorectal surgery patients.