Urodynamic characteristics of spina bifida occulta children with urinal dysfunction

Abstract

Objective To explore the urodynamic characteristics of spina bifida occulta (SBO) children with urinal dysfunction.Methods A total of 113 patients with urinal dysfunction,48 with SBO diagnosed radiologically and 65 negative controls were recruited.The major symptoms were incontinence,increased voiding frequency and dysuria and nocturnal enuresis.Uroflowmetry was conducted for all cases.And 112 of them received invasive urodynamic examinations for analyzing the correlation between main items of urodynamics and symptoms.Results Most (46/48) of them had various abnormalities on urodynamic test.There were detrusor instability (DI,n =22),detrusor underactivity (n =21),decreased maximum flow rate (n =18,Qmax),decreased bladder capacity (n =15),increased post-void residual urine (n =12,PVR),decreased bladder compliance (BC,n =7),detrusor-external sphincter dyssynergia (n=4) and decreased urethral pressure (n=4).DI,detrusor underactivity,increased PVR and decreased bladder compliance were more often present in patients with SBO.According to the symptoms,correlation existed between incontinence and decreased Qmax and detrusor underactivity; increased voiding frequency and increased PVR; dysuria and detrusor underactivity; nocturnal enuresis and DI.Conclusions SBO children with urinal dysfunction may have various urodynamic changes.And the same clinical manifestation may have different abnormalities.And the symptoms are probably correlated with urodynamic changes. Key words: Spina bifida occulta; Urinal disorders; Urodynamics