• Félix Gremonprez, Helena Gossye, and Wim Ceelen.
• Department of Medical Oncology, Ghent University Hospital, Belgium.
• Eur J Surg Oncol. 2019 Mar 1; 45 (3): 366-370.

BackgroundHyperthermic intraperitoneal chemotherapy (HIPEC) with oxaliplatin (OX) is increasingly used in the treatment of colorectal peritoneal carcinomatosis (PC). However, the additional benefit of hyperthermia remains clinically unproven, while it may aggravate postoperative morbidity. Here, we report the correlation of perfusion temperature with postoperative morbidity during clinical HIPEC with OX.Patients And MethodsPatients who underwent hyperthermic (41 °C, HT) or normothermic (37 °C, NT) chemoperfusion with OX for colorectal PC were identified from a prospectively kept database of HIPEC cases and matched for baseline characteristics using propensity score (PS) analysis. The groups were compared to assess the impact of perfusion temperature on morbidity. Morbidity was graded using the Clavien-Dindo (CD) classification and the Comprehensive Complication Index (CCI).ResultsOut of 612 patients, 146 patients met the inclusion criteria and from these patients, 45 HT patients were matched with 45 NT patients. Baseline variables were comparable between the PS matched groups. Overall mortality was 0.7% and major morbidity (CD ≥ 3) occurred in 35,6% of patients. There were no significant differences between the HT and NT cohorts in mortality, major morbidity (RR 1.33, 95% CI 0.71 to 2.49, p = 0.36), anastomotic leakage (13.8% versus 11.1%, p = 1.0), hemorrhagic complications, or systemic toxicity. A trend of increased wound infections was observed in the hyperthermia group (13.3% versus 4.4%, P = 0.27).ConclusionsCompared to NT, the use of HT during HIPEC with OX does not aggravate postoperative mortality or morbidity in a high-volume center.Copyright © 2018 Elsevier Ltd, BASO ~ The Association for Cancer Surgery, and the European Society of Surgical Oncology. All rights reserved.

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