Does preoperative prognostic nutrition index predict surgical site infection after spine surgery?
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ORIGINAL ARTICLE
Does preoperative prognostic nutrition index predict surgical site infection after spine surgery? Hiroki Ushirozako1 · Tomohiko Hasegawa1 · Yu Yamato2 · Go Yoshida1 · Tatsuya Yasuda3 · Tomohiro Banno1 · Hideyuki Arima1 · Shin Oe2 · Yuki Mihara1 · Tomohiro Yamada1 · Koichiro Ide1 · Yuh Watanabe1 · Keichi Nakai1 · Takaaki Imada4 · Yukihiro Matsuyama1 Received: 14 June 2020 / Revised: 25 August 2020 / Accepted: 29 September 2020 © Springer-Verlag GmbH Germany, part of Springer Nature 2020
Abstract Purpose Malnutrition is reported as one of the risk factors for surgical site infection (SSI). The prognostic nutritional index (PNI) is a simple method for nutritional evaluation. However, little is known about the relationship between SSI and the PNI in patients after spine surgery. We aimed to determine independent predictors of SSI after spine surgery. Methods We analyzed 1115 patients who underwent spine surgery (369 males, 746 females, mean age 56 years, followup period: at least 1 year). Patients were divided into SSI and non-SSI groups. Preoperative risk factors, including PNI (10 × serum albumin [g/dL] + 0.005 × total lymphocyte count [/μL]), were assessed. Results Postoperatively, 43 patients (3.9%) experienced SSI. Univariate analysis showed that preoperative PNI (48.5 vs 51.7; p
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