The First Year After Colorectal Surgery in the Elderly.

Purpose: Surgery for colorectal malignancy is increasingly being performed in the elderly. Little is known about the impact of complications on late mortality. This study aimed to analyze whether a complicated postoperative course affects the 1-year survival in elderly patients.

Methods: All consecutive patients older than 75 years of age who underwent colorectal cancer surgery between January 2009 and April 2013 were included in this study. The main outcome was mortality at 1 year after surgery. Logistic regression analyses were performed to determine risk factors for a poor outcome (mortality) after survival of the early postoperative course of surgery at 1-year follow-up. Patients who died within 30 days postoperatively were excluded from analysis.

Results: The early mortality rate was 6.3% (n = 15), and 2 patients died during follow-up as a result of complications after a second surgery. A total of 223 patients survived the perioperative period and were included in this study. Twenty-two patients (9.9%) died during the first year of follow-up. Stage IV disease (P = 0.002), complications of primary surgery (P = 0.016), and comorbidity (P = 0.050) were risk factors for 1-year mortality. Intensive care unit stay, reoperation and readmission were not associated with a worse 1-year outcome.

Conclusion: Elderly patients with stage IV disease at the time of surgery, comorbidity, and postoperative complications are at risk for mortality during the first year after surgery. A patient-tailored approach with special attention to perioperative care should be considered in the elderly.