Elsevier

Journal of Surgical Research

Volume 211, 1 May 2017, Pages 137-146
Journal of Surgical Research

Gastrointestinal
Sarcopenia: a new predictor of postoperative complications for elderly gastric cancer patients who underwent radical gastrectomy

https://doi.org/10.1016/j.jss.2016.12.014Get rights and content

Abstract

Background

A geriatric assessment is needed to identify high-risk elderly patients with gastric cancer. However, the current geriatric assessment has been considered to be either time-consuming or subjective. The present study aimed to investigate the predictive effect of sarcopenia on the postoperative complications for elderly patients who underwent radical gastrectomy.

Materials and methods

We conducted a prospective study of patients who underwent radical gastrectomy from August 2014 to December 2015. Computed tomography–assessed lumbar skeletal muscle, handgrip strength, and gait speed were measured to define sarcopenia.

Results

Sarcopenia was present in 69 of 240 patients (28.8%) and was associated with lower body mass index, lower serum albumin, lower hemoglobin, and higher nutritional risk screening 2002 scores. Postoperative complications significantly increased in the sarcopenic patients (49.3% versus 24.6%, P < 0.001), compared with nonsarcopenic patients. The multivariate analysis demonstrated that sarcopenia (odds ratio: 2.959, 95% CI: 1.629-5.373, P < 0.001) and the Charlson comorbidity index ≥2 (odds ratio: 3.357, 95% CI: 1.144-9.848, P = 0.027) were independent risk factors for postoperative complications.

Conclusions

Sarcopenia, presented as a new geriatric assessment factor, was a strong and independent risk factor for postoperative complications of elderly patients with gastric cancer.

Introduction

Gastric cancer is the fourth most common malignancy and the third leading cause of death worldwide.1 As the world population ages and lifespans increase, the number of elderly patients with gastric cancer has been increasing significantly.2 Surgical resection remains the most effective therapy for potentially curable gastric cancer.3 However, surgeons sometimes hesitate to perform surgery on elderly patients due to the high frequency of complications and poor survival rates associated with aging.4, 5 Recently, some reviews confirmed that chronological age alone was not an independent predictor of postoperative complications and highlighted the importance of geriatric assessment to identify high-risk patients.6, 7

The American Geriatrics Society published a practice guideline for optimal preoperative assessment of geriatric surgical patients, including cognitive/behavioral disorders, cardiac evaluation, pulmonary evaluation, functional/performance status, frailty, nutritional status, medication management, patient counseling, and preoperative testing.8 However, this assessment seems time-consuming and may be infeasible in a busy surgical practice.6 Specific items such as deficiencies in activities of daily living, depression, decreased cognition, and frailty were believed to be the most robust predictors of postoperative complications among the surgical oncology population.6 Regrettably, these items were considered to be subjective and relatively cumbersome.9, 10

Sarcopenia, is an age-related syndrome, characterized by progressive and generalized loss of skeletal muscle mass and strength.11 In recent years, sarcopenia has been gradually recognized to be associated with a negative prognosis after colorectal,12 pancreatic,13 hepatic,14 and gastric surgery.15 However, most of these studies defined sarcopenia as reduced skeletal muscle mass alone, ignoring the importance of skeletal muscle function.16 Moreover, patients of all ages were included in these studies. It seems more meaningful to explore the predictive effect of sarcopenia among elderly patients undergoing oncological surgery, as sarcopenia is an age-related syndrome.

In this prospective study, we assessed both skeletal muscle mass and function to define sarcopenia, aiming to investigate the predictive effect of sarcopenia on the postoperative complications for elderly patients who underwent radical gastrectomy.

Section snippets

Patients

From August 2014 to December 2015, all patients who underwent gastric cancer surgery at our department were included in this prospective study. The inclusion criteria included patients who were aged ≥65 y, had American society of anesthesiology (ASA) grade ≤ III, planned to receive elective radical gastrectomy for gastric cancer, and had preoperative abdominal computed tomography (CT) scans available for review. Exclusion criteria included those patients with a physical deformity, who were

Clinicopathologic characteristics

From August 2014 to December 2015, a total of 240 patients met the inclusion criteria and were included in this study. The patients’ clinicopathologic characteristics are summarized in Table 1. Based on the diagnostic criteria for sarcopenia, 69 patients (28.8%) were diagnosed with sarcopenia and the remaining 171 patients (71.3%) with no sarcopenia. There were no significant differences in gender, ASA grade, Charlson comorbidity index, and previous abdominal surgery between sarcopenic and

Discussion

Although the advances in surgical techniques and perioperative treatment have reduced postoperative complications, these complications remain substantial in elderly patients due to the increasing prevalence of frailty, comorbidities, and the decline of functional reserve associated with aging.5, 24 Therefore, a preoperative assessment for the elderly surgical oncology population is needed to identify high-risk patients. To date, commonly used geriatric assessment factors are considered to be

Conclusions

The present study demonstrates that sarcopenia, which can reflect both physical function and nutritional status of elderly patients, was a strong and independent risk factor for postoperative complications of these patients with gastric cancer. This objective, convenient, relatively comprehensive, and preoperatively modifiable predictive factor should be considered as part of comprehensive geriatric assessment in the future.

Acknowledgment

This work was supported by the foundation of the Health Department of Zhejiang Province (2016139771), and the Shanghai Science and Technology Committee (16411954200). Chen-Ping Huang, Department of Public Health, Wenzhou Medical University, contributed to the optimization of the statistical methods of this study.

Authors' contributions: X.X.C. and C.L.Z. contributed to the study design. F.M.Z., F.Y.Z., and X.L.C. collected the data. C.J.Z. and F.M.Z. analyzed and interpreted the data. C.J.Z. and

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