Overactive bladder: results from patients treated by hyaluronic acid-chondroitin sulphate therapy.

Background: Overactive bladder (OAB) is a chronic condition. This study was prompted by the need to fill the gap between medical treatment and advanced therapies allowing improvement in Quality of Life. The aim of the current study was to evaluate the association between treatment type (Ialuril^®; IBSA Farmaceutici, Lodi, Italy; in combination with antimuscarinic or alone after drop-out of antimuscarinic, relative to antimuscarinic alone treatment) and functional outcomes (number of micturitions, pelvic pain, urinary incontinence, nocturia, urgency).

Methods: Of all patients newly diagnosed (January 2016 - January 2022) with OAB syndrome, we retrospectively identified 150 patients. They harbored three groups of 50 patients each: group 1 (antimuscarinic drug), group 2 (antimuscarinic drug + hyaluronic acid-chondroitin sulphate [HA-CS]), group 3 (antimuscarinic dropout patients). Univariable linear and logistic regression models were fitted for number and rates of incontinence, urgency, pelvic pain, nocturia, respectively.

Results: A significant mean reduction of 1.5 micturition (P=0.02) was recorded in group 2 compared to group 1. Conversely, no statistically significant mean difference was recorded in group 3 compared to group 1. Regarding pelvic pain, both group 2 and group 3 were associated with lower rate of pelvic pain (P<0.001). Regarding urgency, a statistically significant protective OR was recorded for group 2 (OR=0.39; P=0.04), compared to group 1.

Conclusions: The combination therapy was associated with symptom improvement in antimuscarinic naïve OAB patients. Conversely in antimuscarinic dropped-out patients only pelvic pain improved with the HS-CA. No statistically significant differences were recorded for other functional outcomes, such as incontinence and nocturia.