The effect of hospital volume on mortality, morbidity and dissected lymph nodes in pancreaticoduodenectomy for periampullary region tumors

Abstract

Background/Aim: Since the first pancreaticoduodenectomy (PD) surgeries, mortality, morbidity and length of hospital stay decreased, in return, the number of uncomplicated cases and dissected lymph nodes increased over the years. The aim of our study was to determine the effect of hospital volume on survival, postoperative hospital stay, fistula rate, morbidity rate and the number of lymph nodes dissected. Methods: In this retrospective cohort study, 213 patients who were operated with the diagnosis of periampullary tumor between January 2008 and January 2016 were included in the study. The patients were divided into four groups according to the years of surgery: Group A (n=31, 2008-2009), Group B (n=46, 2010-2011), Group C (n=50, 2012-2013) and Group D (n=86, 2014-2016). The groups were compared with each other in terms of the following factors; Pancreatic fistula rates, postoperative hospital stay, mortality rates, morbidity rates, number of dissected lymph nodes. Results: It has been observed that there is a relation between pancreatic tissue quality and duct size with fistulas (P=0.0016 and P=0.017, respectively). It is seen that as the amount of number lymph nodules increases, the quality of staging improves (P=0.009). Rates of mortality and morbidity are decreased, as the hospital volume increased (P=0.037), The same effect of hospital volume is observed in length of hospital stay and fistula rates, both improved (P=0.017 and P