Factors Influencing Perioperative Complications in Older Adults Undergoing CRC Resection

Overview

This study evaluated postoperative morbidity and mortality in patients aged 75 years and older undergoing colorectal cancer resection. Advanced age and open surgical approach were identified as independent risk factors for major postoperative complications, while malnutrition and low psoas muscle area were also associated with adverse outcomes.

Background

Colorectal cancer (CRC) is the third most common cancer worldwide, predominantly affecting older adults with a median diagnosis age of 67 years. Surgery remains the primary curative treatment, but elderly patients face increased perioperative risks influenced by factors beyond chronological age, including frailty, sarcopenia, and malnutrition. Accurate preoperative risk assessment is essential to optimize outcomes in this heterogeneous population, particularly those aged 75 and older.

Data Highlights

Key Findings

• Patients with severe postoperative complications were significantly older (p = 0.001).
• Low preoperative psoas muscle area correlated with increased postoperative complications.
• Malnutrition, indicated by serum albumin <35 g/L, was associated with higher rates of major complications (p = 0.022).
• Anemia was not predictive of postoperative morbidity.
• Higher ASA scores and frailty (5-mFI ≥ 2) did not predict major complications.
• Open surgery and urgent procedures were linked to higher rates of major postoperative complications (p = 0.003 and p < 0.001, respectively).
• Multivariate analysis identified advanced age and open surgery as independent risk factors for major postoperative complications (OR 1.28).

Clinical Implications

Preoperative assessment in elderly CRC patients should include evaluation of muscle mass and nutritional status to identify those at higher risk for complications. Minimally invasive surgical approaches may reduce postoperative morbidity in this population. Careful patient selection and optimization before surgery are critical to improve outcomes in patients aged 75 and older.

Conclusion

In elderly patients undergoing colorectal cancer resection, advanced age and open surgical approach independently increase the risk of major postoperative complications. Incorporating assessments of sarcopenia and nutritional status can aid in risk stratification and guide perioperative management.

References

1. National Cancer Institute -- Colorectal Cancer Statistics
2. Clavien-Dindo Classification -- Surgical Complications Grading
3. 5-item Frailty Index -- Assessment Tool for Frailty