Transurethral Resection of Bladder Tumor

Transurethral resection (TUR) is a common minimally invasive surgical procedure for lower urinary tract diseases. However, postoperative urinary catheterization often causes catheter-related bladder discomfort (CRBD) and pain due to bladder spasms, which negatively impact recovery and sleep quality. Pharmacological agents used to alleviate CRBD and pain may cause adverse side effects. This study aims to evaluate the effects of cyclic sighing breathing exercises on CRBD severity, pain intensity, and sleep quality in patients undergoing TUR.

This prospective observational cohort study aims to evaluate the association between intraoperative irrigation fluid absorption and perioperative cell-free DNA (cfDNA) dynamics in patients undergoing transurethral resection of bladder tumor (TURBT). Eligible patients with suspected or confirmed bladder cancer scheduled for TURBT will be enrolled. Intraoperative irrigation fluid absorption volume will be recorded, and peripheral blood samples will be collected before surgery and within 24 hours after surgery for cfDNA extraction and mutation analysis. The study will assess whether irrigation fluid absorption volume is associated with changes in cfDNA concentration, tumor-related mutation detection, and clinicopathological features, including tumor stage, grade, size, number, invasion depth, concomitant carcinoma in situ, operative time, resection depth, and intraoperative blood loss. Patients will also be followed for postoperative recurrence, progression, metastasis, and other adverse oncological outcomes. This study may provide preliminary evidence for understanding perioperative tumor-related molecular changes during TURBT and may help improve risk stratification, perioperative management, and postoperative follow-up strategies for patients with bladder cancer.