Nutritional status and outcomes of veterans undergoing curative surgery for colorectal cancer.

Abstract

e18585 Background: Malnutrition is highly prevalent within the cancer population. Malnourishment has various negative surgical and oncologic impacts. The Veterans Health Administration (VHA) provides comprehensive care to patients in a single-payer system allowing for capture of peri-operative data and the opportunity for focused pre-operative (pre-op) interventions to improve outcomes. We sought to study the effect of pre-op weight and albumin on post-operative (post-op) complications in a contemporaneous group of veterans with colorectal cancer (CRC) at a tertiary care Veterans Affairs (VA) hospital. Methods: This is a retrospective review of 105 patients with colorectal malignancies treated with curative intent surgery at the VA Ann Arbor Healthcare System between January 2015 and January 2020. Patients with distant metastatic disease, neoadjuvant therapy, non-adenocarcinoma histology, or those receiving majority of care outside of the VHA were excluded. We examined BMI trends from one year prior to one year post surgery, rates of nutrition consults, and post-op complications defined as abnormal clinical developments such as, but not limited to, infection and delayed wound healing. Fisher’s exact test was used for analysis. Results: At time of CRC diagnosis, the mean age was 70.3 ± 9.1 and the median stage was T2N0. Surgical resections were 65% (n = 68) laparoscopic. Pre-op weight loss from 6 months prior to diagnosis to time of surgery was observed in the majority of patients (n = 47, 64%). Significant weight loss, defined as ≥3% weight reduction, was seen in 45% (n = 33) of patients. A quarter of patients were identified to have a low pre-op albumin of less than 3.5 (n = 25, 25%). Significant weight loss and low pre-op albumin were each independently associated with increased post-op complications (p < 0.01). Post-op weight loss was seen in 81% (n = 73) and 69% (n = 48) of patients at 30- and 60-days post-op, respectively, and was not associated with post-op complications. Inpatient post-op nutrition consultation was performed in 96% (n = 101) of patients; nutritional supplements were recommended in only 23% (n = 23) of cases. In patients with significant weight loss, pre-op nutrition evaluation was performed in 15% (n = 5) of cases and post-op outpatient nutrition follow up occurred in 18% (n = 6) of cases. Conclusions: 45% of patients had ≥3% weight loss 6 months prior to diagnosis of CRC and 25% of patients had low albumin levels. These led to greater post-operative complications. An intensive nutrition pre-habilitation program to address weight loss and low albumin prior to surgery for CRC is needed and may reduce associated complications.