Impact of malnutrition on outcomes following groin hernia repair: Insights from the ACS NSQIP.

BACKGROUND

The present study examined the association of nutrition status, as defined by preoperative serum albumin, with postoperative outcomes and resource use after groin hernia repair.

METHODS

The 2006 to 2019 American College of Surgeons National Surgical Quality Improvement Program database was queried for adults (≥18 years) undergoing open or laparoscopic repair of inguinal or femoral hernia. Patients were stratified based on the following preoperative serum albumin levels: <2.5 g/dL (severe hypoalbuminemia), 2.5 to <3.0 (moderate hypoalbuminemia), 3.0 to <3.5 (mild), and ≥3.5 (normal albumin). Multivariable regression models were developed to assess the association of hypoalbuminemia with outcomes of interest, including 30-day mortality, postoperative complications, length of stay, and 30-day readmission.

RESULTS

Of the 261,052 patients meeting inclusion criteria, 0.3% had severe, 1.1% had moderate, and 7.4% had mild hypoalbuminemia, with 91.2% classified as normal albumin. After risk adjustment, mortality risk was greater for severe (5.8%, 95% confidence interval: 4.1-7.6), moderate (4.4%, 95% confidence interval: 3.4-5.3), and mild hypoalbuminemia (1.5%, 95% confidence interval: 1.2-1.8) relative to normal albumin (0.3%, 95% confidence interval: 0.2-0.3). Decreasing serum albumin levels were associated with a stepwise increase in risk of complications, length of stay, and 30-day readmission.

CONCLUSION

Decreased preoperative serum albumin is associated with increased mortality and morbidity after open and laparoscopic groin hernia repair. Serum albumin remains a relevant predictor of postsurgical outcomes and can thus be used in shared decision-making and optimization of malnourished patients in need of groin hernia repair.