Low Abdominal Wall Thickness May Predict Percutaneous Endoscopic Gastrostomy Complications

Abstract

Although percutaneous endoscopic gastrostomy (PEG) tube placement is a common and safe procedure to provide enteral feeding, some patients develop complications. The aim of this study was to identify risk factors for the development of post-PEG complications. We hypothesized that patients with low albumin, diabetes, higher body mass index (BMI), thicker abdominal walls, or psychomotor agitation would have more complications. A 2-year retrospective review was performed on patients who received a PEG tube at a single institution. Variables collected included age, preoperative albumin, BMI, abdominal wall thickness (AWT), psychomotor agitation, pre-operative diabetes mellitus, and mortality. A total of 91 patients (70.3% male) were identified (mean age 58.7 years, SD 18.6). Seventeen patients (18.7%) had post-PEG complications and the 30-day mortality rate was 14.3 per cent. Mortality was not attributable to tube placement. Patients with complications weighed less (P = 0.005) and had a lower BMI (P = 0.010) than patients without complications. Additionally, patients with complications had significantly lower AWT (P = 0.02), mean AWT was 21.6 mm (SD 7.6) versus 27.6 mm (SD 8.1) in the noncomplication patients. AWT was the only factor independently associated with post-PEG complications (P = 0.047). There was no significant association between complications and mortality. Continued investigation on how to limit post-PEG complications remains imperative. In our population, lower AWT was independently associated with complications. Preoperative measurement of AWT by pre-procedural imaging can potentially be used to predict the risk of post-PEG complications.