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American Society of Anesthesiologists physical status facilitates risk stratification of elderly patients undergoing thoracoscopic lobectomy.
European Journal of Cardio-thoracic Surgery 2018 May 2
OBJECTIVES: Accurate risk assessments are particularly important for elderly patients being considered for lobectomy. Considering the positive effects of the thoracoscopic approach on postoperative outcomes, we sought to review the reliability of the established risk factors for elderly patients undergoing thoracoscopic lobectomy.
METHODS: From January 2009 to March 2016, 441 patients in our institution underwent thoracoscopic lobectomy for early-stage lung cancer. Clinical outcomes were compared between elderly (>70 years, n = 176) and younger patients (n = 265).
RESULTS: There was no significant difference in postoperative mortality and morbidity between elderly and younger patients. In the regression analyses restricted to elderly patients, American Society of Anesthesiologists physical status (ASA-PS) was the single strong predictor of postoperative morbidity. The odds of pulmonary and cardiopulmonary complications increased nearly 6- and 3-fold, respectively, in those with ASA-PS Grade 3 compared with patients with ASA-PS Grade <3. Additionally, male gender was found to have a possible causal effect of pulmonary complication in elderly patients. After confounder adjustment using propensity score matching, the generalized linear mixed model revealed more than an 8-fold increase in the odds of pulmonary complications in elderly men compared with elderly women. To check the robustness of the above-mentioned finding, inverse probability of treatment weighting was used as an alternative analysis indicating a weaker but still substantively significant effect of male gender, with an odds ratio >3.
CONCLUSIONS: Our results suggest that ASA-PS is a strong predictor of morbidity among elderly patients considered for thoracoscopic lobectomy. Compared with elderly women, elderly men are particularly prone to postoperative pulmonary complications.
METHODS: From January 2009 to March 2016, 441 patients in our institution underwent thoracoscopic lobectomy for early-stage lung cancer. Clinical outcomes were compared between elderly (>70 years, n = 176) and younger patients (n = 265).
RESULTS: There was no significant difference in postoperative mortality and morbidity between elderly and younger patients. In the regression analyses restricted to elderly patients, American Society of Anesthesiologists physical status (ASA-PS) was the single strong predictor of postoperative morbidity. The odds of pulmonary and cardiopulmonary complications increased nearly 6- and 3-fold, respectively, in those with ASA-PS Grade 3 compared with patients with ASA-PS Grade <3. Additionally, male gender was found to have a possible causal effect of pulmonary complication in elderly patients. After confounder adjustment using propensity score matching, the generalized linear mixed model revealed more than an 8-fold increase in the odds of pulmonary complications in elderly men compared with elderly women. To check the robustness of the above-mentioned finding, inverse probability of treatment weighting was used as an alternative analysis indicating a weaker but still substantively significant effect of male gender, with an odds ratio >3.
CONCLUSIONS: Our results suggest that ASA-PS is a strong predictor of morbidity among elderly patients considered for thoracoscopic lobectomy. Compared with elderly women, elderly men are particularly prone to postoperative pulmonary complications.
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