Systemic inflammation score: a novel risk stratification tool for postoperative outcomes after video-assisted thoracoscopic surgery lobectomy for early-stage non-small-cell lung cancer
Authors Li S, Wang Z, Zhang W, Li J, Zhou K, Che G
Received 20 February 2019
Accepted for publication 24 May 2019
Published 21 June 2019 Volume 2019:11 Pages 5613—5628
Checked for plagiarism Yes
Review by Single-blind
Peer reviewers approved by Dr Colin Mak
Peer reviewer comments 2
Editor who approved publication: Dr Antonella D'Anneo
Shuangjiang Li,1,* Zhiqiang Wang,2,* Wenbiao Zhang,1 Jue Li,1 Kun Zhou,1 Guowei Che1
1Department of Thoracic Surgery, West China Hospital, Sichuan University, Chengdu 610041, People’s Republic of China; 2Department of Thoracic Surgery, Chongqing University Cancer Hospital, Chongqing Cancer Institute, Chongqing Cancer Hospital, Chongqing University, Chongqing 400030, People’s Republic of China
*These authors contributed equally to this work
Objectives: To evaluate whether the systemic inflammation score (SIS) could predict postoperative outcomes for patients undergoing video-assisted thoracoscopic surgery (VATS) lobectomy for early-stage non-small-cell lung cancer (NSCLC).
Methods: This retrospective study was conducted on the prospectively maintained database in our institution between January 2016 and December 2017. Preoperative SIS comprising serum albumin (sALB) and lymphocyte-to-monocyte ratio (LMR) was graded into 0, 1 and 2, and then utilized to distinguish patients at high surgical risks. Multivariable logistic-regression analysis was conducted to determine independent risk factors for postoperative outcomes.
Results: There were 1,025 patients with TNM-stage I-II NSCLC included, with an overall morbidity rate of 31.1% and mortality rate of 0.3%. We applied the sALB at 40 g/L and the median LMR of our series at 4.42 as dichotomized cutoffs for modified SIS scoring criteria. Both minor and major morbidity rates in patients with SIS=2 were significantly higher than those in patients with SIS=0 and with SIS=1 (P<0.001). No difference was found in overall morbidity rate between patients with SIS=1 and with SIS=0 (P=0.20). No significant difference was found in the mortality rate between these 3 groups. Patients with SIS=2 had the highest probability to experience most of individual complications. Finally, multivariable logistic-regression analysis suggested that preoperative SIS=2 could independently predict the morbidity risks following VATS lobectomy (OR=1.73; 95% CI=1.11–2.71; P=0.016).
Conclusions: The SIS scoring system can be employed as a simplified, effective and routinely operated risk stratification tool in patients undergoing VATS lobectomy.
Keywords: systemic inflammation score, video-assisted thoracoscopic surgery, non-small-cell lung cancer, prediction
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