A retrospective analysis of the factors associated with increased risk of readmission within 30 days after primary transurethral resection of bladder tumor

BACKGROUND: Transurethral resection of bladder tumor (TURBT) is associated with perioperative morbidity of 5% to 10%, which can lead to unplanned readmissions. In this study, we aimed to identify the factors that lead to an increased risk of unplanned readmissions within 30 days of primary TURBT. MATERIALS AND METHODS: A retrospective study was conducted to identify patients who underwent primary TURBT at our institute from 2011 to 2019. Clinical and demographic factors, history of smoking, antiplatelet drugs intake, comorbidities, tumor size (<3 or >3 cm), multifocality, and histopathological type were abstracted. Patients who were readmitted were identified, and reasons for admission were recorded. RESULTS: A total of 435 patients were identified. The median age of the patients was 66 years. From 378 male patients (86.9%), 110 (25.3%) and 37 (8.5%) had a history of smoking and antiplatelet agents intake, respectively. In the cohort, 166 patients (38.2%) were diabetic, 239 (54.9%) were hypertensive, 72 (16.6%) had chronic obstructive pulmonary disease, and 78 (7.9%) had hypothyroidism. A total of 206 patients (47.4%) had a tumor >3 cm; multifocality was seen in 140 (32.2%) patients, whereas muscle invasive tumors were present in 161 patients (37%). A total of 22 patients (5.06%) had readmissions within 30 days, with hematuria being the most common etiology. On univariate and multivariate analyses, a history of smoking (p = 0.006 and p = 0.008, respectively) or antiplatelet agents intake (p < 0.001 and p < 0.001, respectively) was significantly associated with increased unplanned readmission. CONCLUSIONS: Our study revealed smoking and antiplatelet agents intake as factors leading to an increased risk of unplanned readmissions.