Impact of sarcopenic obesity on predicting the severity of acute pancreatitis

Abstract

Background and aims: This work aimed to evaluate the impact of sarcopenia and sarcopenic obesity on the occurrence of severe pancreatitis and to study the performance of anthropometric indices to predict severe forms.

Methods: We conducted a single-center retrospective study at Caen University Hospital between 2014 and 2017. Sarcopenia was assessed by measuring the psoas area on an abdominal scan. The psoas area /body mass index ratio reflected sarcopenic obesity. By normalizing the value to the body surface, we obtained an index called sarcopancreatic index, avoiding sex differences in measurements.

Results: Among 467 included patients, 65 (13.9%) developed severe pancreatitis. The sarcopancreatic index was independently associated with the occurrence of severe pancreatitis (1.455 95% CI [1.028-2.061]; p = 0.035), as was the Visual Analog Scale, creatinine or albumin. The complication rate was not different depending on sarcopancreatic index value. Based on variables independently associated with the occurrence of severe pancreatitis, we constructed a score called Sarcopenia Severity Index. This score presented an area under the receiver operating characteristics curve of 0.84, comparable to the Ranson score (0.87) and superior to body mass index or the sarcopancreatic index to predict a severe form of acute pancreatitis.

Conclusions: Sarcopenic obesity seems to be associated with severe acute pancreatitis.

Keywords: Acute pancreatitis; Malnutrition; Obesity; Prognosis; Sarcopenia.