The Current State of Postoperative Complication Grading Scales: A Systematic Review

Area of Science:

• Medical Research
• Surgical Outcomes
• Patient Care Standardization

Background:

• Standardized grading of postoperative complications is crucial for improving patient care and reporting outcomes.
• Existing grading scales lack comprehensive comparative analysis in the literature.
• Several classification systems exist, but their comparative performance is not well-documented.

Purpose of the Study:

• To systematically review and compare existing classifications for grading postoperative complications.
• To evaluate the strengths and limitations of different grading systems.
• To provide insights into the most effective methods for reporting surgical outcomes.

Main Methods:

• Systematic review of literature on grading scales for postoperative complications in adult surgical patients.
• Inclusion of studies that developed, adapted, compared, or validated grading scores.
• Exclusion of prognostic scores, disease-specific classifications, and non-peer-reviewed articles.

Main Results:

• The Clavien-Dindo Classification (CDC) and Comprehensive Complication Index (CCI) are the most frequently used scales.
• The CCI demonstrated superior correlation with outcome indicators such as length of stay and medical costs compared to the CDC in most comparative studies.
• Length of stay was the most common outcome indicator used in validation and comparison studies.

Conclusions:

• The CCI shows greater correlation with key outcome indicators than the CDC.
• The CDC remains practical for clinical use, particularly when tailored to specific surgical specialties.
• The CCI is recommended for research purposes due to its superior performance in outcome correlation.