Computed Tomography-Measured Psoas Density Predicts Outcomes After Enterocutaneous Fistula Repair

Overview

Journal JPEN J Parenter Enteral Nutr

Publisher Wiley

Specialty Nutritional Sciences

Date 2018 Mar 6

PMID 29505144

Citations 9

Authors

Wilson D Lo

David C Evans

Taehwan Yoo

Affiliations

Soon will be listed here.

Abstract

Background: Low muscle mass and quality are associated with poor surgical outcomes. We evaluated computed tomography (CT)-measured psoas muscle density as a marker of muscle quality and physiologic reserve and hypothesized that it predicts poor outcomes after enterocutaneous fistula repair (ECF).

Methods: We conducted a retrospective cohort study of patients 18-90 years old with ECF who failed nonoperative management, requiring elective operative repair at The Ohio State University (2005-2016), and who received preoperative abdomen/pelvis CT scan with intravenous contrast within 3 months of the operation. Psoas Hounsfield unit average calculations were measured at the L3 level. One-year leak rate, mortality (90 days, 1 years, and 3 years), complication risk, length of stay, dependent discharge, and 30-day readmission were compared with Hounsfield unit average calculation (HUAC).

Results: One hundred patients met inclusion criteria. Patients were stratified into interquartile ranges based on HUAC. The lowest HUAC interquartile was our low muscle quality (LMQ) cutoff, which was associated with 1-year leak (relative risk [RR] = 2.10, P < .005), 1-year mortality (RR = 2.22, P < .04) and 3-year mortality (RR = 2.13, P < .007), complication risk (RR = 1.54, P < .001), and dependent discharge (RR = 2.50, P < .004) compared to patients without LMQ.

Conclusions: Psoas muscle density is a significant predictor of poor outcomes in ECF repair. This readily available measure of physiologic reserve can identify patients with ECF who have increased risk and may benefit from additional interventions and recovery time before operative repair.

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