Eur Urol. 2007;51:782-787
Age and maximal peak flow rate before tension-free vaginal tape (TVT) placement are independent risk factors for postoperative voiding dysfunction, a French study found.

Investigators at Hôpital Cochin in Paris examined 100 women with stress urinary incontinence who underwent the TVT procedure. Voiding dysfunction was defined as a postoperative peak flow rate of less than 15 mL/sec three months postoperatively.

Twenty patients (20%) met this definition, despite the absence of clinical symptoms in 14 of them (70%). Each five-year increment in preoperative age was associated with a 32% in-creased risk of voiding dysfunction. Each 5 mL/sec increase in preoperative maximal peak flow rate was as-sociated with a 64% decreased risk.

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Identification of preoperative risk factors of voiding dysfunction or abnormal voiding behavior “is an important objective to achieve complete preoperative information on possible complications after TVT surgery,” the authors concluded.

“This may lead to better selection of patients.” If age and preoperative peak flow rate are good independent predictors of postoperative voiding dysfunction after TVT, they added, “cut-off values for these two parameters still must be defined.”