Abstract

ObjectivesTo determine whether neoadjuvant chemotherapy (NACT) disproportionately benefits obese patients. MethodsData were collected from stage IIIC-IV ovarian cancer patients treated between 01/2010–07/2015. We performed univariate/multivariate logistic regression analyses with post-operative infection, readmission, any postoperative complication, and time to chemotherapy as outcomes. An interaction term was included in models, to determine if the effect of NACT on post-operative complications was influenced by obesity status. ResultsOf 507 patients, 115 (22.6%) were obese and 392 (77.3%) were non-obese (obese defined as BMI ≥30). Among obese patients undergoing primary debulking surgery (PDS) vs. NACT, rates of postoperative infection were 42.9% vs. 30.8% (p = 0.12), 30-day readmission 30.2% vs. 11.5% (p < 0.02), and any post-operative complication were 44.4% vs 30.8% (p = 0.133). Among non-obese patients undergoing PDS vs. NACT, rates of post-operative infection were 20.0% vs. 12.9% (p = 0.057), 30-day readmission 16.9% vs. 9.2% (p = 0.02), and any post-operative complication were 19.4% vs 28% (p = 0.044). Obesity was associated with post-operative infection (OR 2.3; 95%CI 1.22–4.33), 30-day readmission/reoperation (OR 2.27; 95%CI 1.08–3.21) and the development of any post-operative complication (OR 2.1; CI 1.13–3.74). However, there was not a significant interaction between obesity and NACT in any of the models predicting post-operative complications. ConclusionsThe decision to use NACT should not be predicated on obesity alone, as the reduction in post-operative complications in obese patients is similar to non-obese patients.

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