Abstract
To explore the differences of urodynamic parameters and lower urinary symptoms between detrusor hyperactivity with impaired contractility (DHIC) patients and DHIC patients with bladder outlet obstruction (BOO) and evaluate the effects and risks of anticholinergic medications in these patients. A retrospective analysis was performed in 56 DHIC patients at our hospital between February 2000 to February 2011. Among them, 19 patients were complicated with BOO. Urodynamic studies were conducted and lower urinary symptoms assessed in all patients. Then the urodynamic parameters and lower urinary symptoms scores were compared between the DHIC and DHIC plus BOO patients. Among them, 27 received anticholinergic medications and there were 11 BOO patients. After 2-month anticholinergic medications, the differences of lower urinary symptom score were analyzed and anticholinergic-induced retention was also investigated. As compared with the DHIC patients, the DHIC plus BOO patients had a higher post-voiding residual urine (70 (23 - 106) vs 20 (10 - 81) ml, P = 0.02), higher total international prognostic scoring system (IPSS) score (25.6 ± 3.9 vs 22.1 ± 4.1, P = 0.00) and higher total voiding symptom score (15.3 ± 2.9 vs 11.8 ± 3.3, P = 0.00). After 2-month anticholinergic medications, the IPSS score of DHIC plus BOO patients decreased from 25.7 ± 4.6 to 23.6 ± 4.9 (P = 0.01), 2/11 patients developed urinary retention. The IPSS scores of DHIC patients decreased from 22.8 ± 4.7 to 21.4 ± 4.6 (P = 0.01) and none had urinary retention. The DHIC plus BOO patients have more aggravated bladder empting and more severe lower urinary symptoms especially during voiding phase. Anticholinergic medications may alleviate the lower urinary symptoms in DHIC and DHIC plus BOO patients. But anticholinergic-induced retention is common among the DHIC plus BOO patients.
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