• Pascal Owusu-Agyemang, Andrea Hayes-Jordan, Antoinette Van Meter, Uduak U Williams, Acsa M Zavala, Ravish Kapoor, Shannon M Popovich, Elizabeth Rebello, Lei Feng, and Juan P Cata.
• Department of Anesthesiology and Perioperative Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, USA.
• Paediatr Anaesth. 2017 Jun 1; 27 (6): 648-656.

BackgroundSeveral studies in adult patients have suggested an unfavorable association between opioid consumption and cancer progression.AimsThis study investigated the impact of opioid consumption on the survival of children and adolescents undergoing cytoreductive surgery with hyperthermic intraperitoneal chemotherapy.MethodsA retrospective study of patients <19 years who had undergone cytoreductive surgery with hyperthermic intraperitoneal chemotherapy was performed. Univariate and multivariate Cox proportional hazard analyses were used to identify factors associated with recurrence-free survival and overall survival.ResultsSeventy-five patients were identified. Median age was 11.6 years (range, 1.8-18.9), and 43% was female. Median perioperative opioid consumption was 18.9 morphine dose equivalents per kilogram (range, 0.6-339.6). There was no statistically significant association between opioid consumption and recurrence-free survival [hazard ratio, 1.00; 95% confidence interval, (0.99-1.02), P = 0.55] or overall survival [hazard ratio 1.01; 95% confidence interval (0.99-1.03), P = 0.22]. Independent prognostic factors associated with poor survival included incomplete cytoreduction and extra-abdominal disease.ConclusionIn this retrospective study of children and adolescents who had undergone cytoreductive surgery with hyperthermic intraperitoneal chemotherapy, there was no statistically significant association between opioid consumption and recurrence-free survival or overall survival.© 2017 John Wiley & Sons Ltd.

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