Kuk Hyun Jung1, Su Mi Kim2, Min Gew Choi2, Jun Ho Lee2, Jae Hyung Noh2, Tae Sung Sohn2, Jae Moon Bae3, Sung Kim2. 1. Department of Surgery, Bundang Jesaeng Hospital, Seongnam, Republic of Korea. 2. Department of Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, 50 Irwon-dong, Gangnam-gu, Seoul, 135-710, Republic of Korea. 3. Department of Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, 50 Irwon-dong, Gangnam-gu, Seoul, 135-710, Republic of Korea. jmoon.bae@samsung.com.
Abstract
BACKGROUND: Despite the close link between cigarette smoking and the development of gastric cancer, little is known about the effects of cigarette smoking on surgical outcomes after gastric cancer surgery. The aim of this study was to investigate whether preoperative smoking status and the duration of smoking cessation were associated with short-term surgical consequences in gastric cancer surgery. METHODS: Among 1,489 consecutive patients, 1,335 patients who underwent curative radical gastrectomy at the Samsung Medical Center between January and December 2009 were included in the present study. The smoking status was determined using questionnaires before surgery. Smokers were divided into four groups according to the duration of smoking cessation preoperatively (<2, 2-4, 4-8, and >8 weeks). The primary endpoint was postoperative complications (wound, lung, leakage, and bleeding); secondary endpoints were 3-year recurrence-free survival (RFS) and overall survival (OS). RESULTS: Five hundred twenty-two patients (39.1 %) were smokers. Smokers had a significantly higher overall incidence of postoperative complications than nonsmokers (12.3 vs. 5.2 %, P < 0.001, respectively), especially in impaired wound healing, pulmonary problems, and leakage. Smokers also had more severe complications than nonsmokers. After adjusting for other risk factors, the odds ratio (95 % CI) for the development of postoperative complications in the subgroups who stopped smoking <2 weeks, 2-4, 4-8, and >8 weeks preoperatively were 3.35 (1.92-5.83), 0.99 (0.22-4.38), 2.18 (1.00-4.76), and 1.32 (0.70-2.48), respectively, compared with the nonsmokers. There were no significant differences in 3-year RFS (P = 0.884) and OS (P = 0.258) between smokers and nonsmokers. CONCLUSIONS: Preoperative smoking cessation for at least 2 weeks will help to reduce the incidence of postoperative complications in gastric cancer surgery.
BACKGROUND: Despite the close link between cigarette smoking and the development of gastric cancer, little is known about the effects of cigarette smoking on surgical outcomes after gastric cancer surgery. The aim of this study was to investigate whether preoperative smoking status and the duration of smoking cessation were associated with short-term surgical consequences in gastric cancer surgery. METHODS: Among 1,489 consecutive patients, 1,335 patients who underwent curative radical gastrectomy at the Samsung Medical Center between January and December 2009 were included in the present study. The smoking status was determined using questionnaires before surgery. Smokers were divided into four groups according to the duration of smoking cessation preoperatively (<2, 2-4, 4-8, and >8 weeks). The primary endpoint was postoperative complications (wound, lung, leakage, and bleeding); secondary endpoints were 3-year recurrence-free survival (RFS) and overall survival (OS). RESULTS: Five hundred twenty-two patients (39.1 %) were smokers. Smokers had a significantly higher overall incidence of postoperative complications than nonsmokers (12.3 vs. 5.2 %, P < 0.001, respectively), especially in impaired wound healing, pulmonary problems, and leakage. Smokers also had more severe complications than nonsmokers. After adjusting for other risk factors, the odds ratio (95 % CI) for the development of postoperative complications in the subgroups who stopped smoking <2 weeks, 2-4, 4-8, and >8 weeks preoperatively were 3.35 (1.92-5.83), 0.99 (0.22-4.38), 2.18 (1.00-4.76), and 1.32 (0.70-2.48), respectively, compared with the nonsmokers. There were no significant differences in 3-year RFS (P = 0.884) and OS (P = 0.258) between smokers and nonsmokers. CONCLUSIONS: Preoperative smoking cessation for at least 2 weeks will help to reduce the incidence of postoperative complications in gastric cancer surgery.
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