Do drain tubes help reduce risks of post-operative complications in complex incisional hernia repair (as defined by a recent court ruling)?

BACKGROUND

A recent legal case described in the ANZ Journal of Surgery has sparked significant topical interest in drain tube use in incisional hernia repairs in Australia. This study reviews a single centre experience of drain tube use in incisional hernia repair.

METHODS

Data from online clinical records was collected retrospectively from patients that underwent incisional hernia repair from 1 January 2013 to 31 December 2017. 'Complexity' factors of smoking, obesity and lower midline incision (as identified by the legal case) were also used to stratify groups.

RESULTS

A total of 410 incisional hernia repair cases were identified during the 5-year period. Median length of stay of the non-drain placement group was significantly shorter than that of the drain placement group (2 versus 6 days, P < 0.001). In total, 10.8% of patients with drain suffered from post-op wound infection compared to 3.6% in patients without a drain tube in-situ (P = 0.005). Seroma rates were no different with or without a drain (15.7% versus 16.9% P = 0.78). When stratified by 'complexity', there was a trend towards increased complications when drains were used.

CONCLUSION

Drain tubes were placed in only a small proportion of patients during incisional hernia repairs and were associated with a higher post-operative wound infection rate. When stratified by the 'complexity' factors outlined by the recent legal case, complications in more 'complex' patients may actually increase when a drain tube is used.