Safety and Performance of the Colovac Anastomosis Protection Device. A Pooled Analysis of Prospective Studies Compared With Diverting Loop Ileostomy (SAFE-2025).

In 30 seconds

This pooled comparative analysis evaluated the Colovac Anastomosis Protection Device against diverting ostomy after low anterior resection for rectal cancer. It combined three prospective multicentre Colovac trials with a prospective ostomy cohort, using propensity score weighting; 49 Colovac and 54 ostomy patients were included. By postoperative day 10, device- or stoma-related major complications occurred in 4.1% (2/49) versus 5.6% (3/54) (P =0.167). Colovac placement and retrieval succeeded in all patients, and ostomy was avoided in 83.7% by day 10.

Key findings

• By postoperative day 10, major device- or stoma-related complications were 4.1% (2/49) with Colovac and 5.6% (3/54) with diverting ostomy (P =0.167).
• Anastomotic leak detected on day 9/10 occurred in 28.6% versus 20.4% (P =0.102); by day 30, total rates were 32.6% versus 27.8% (P =0.342).
• Ostomy avoidance was achieved in 83.7% of Colovac patients by day 10; effective fecal diversion occurred in 91.7%, with device migration in 14.3%.

Why it matters

Temporary diversion after low anterior resection can carry substantial morbidity. These findings suggest an intraluminal device may provide fecal diversion while avoiding an ostomy for many patients, without a detected increase in major complications or anastomotic leak in this comparison. The results add prospective comparative evidence, while not establishing equivalence or superiority.

What to keep in mind

The analysis pooled prospective trials and compared them with a separate prospective cohort rather than a randomised control group; propensity score weighting cannot eliminate all potential confounding. The sample included 103 patients.