Overactive Bladder Urine Dynamics Related Research In Children

Objective To evaluate the characteristics of urodynamics in children with overactive bladder by analyzing urine flow rates.Methods overactive bladder patients who underwent uroflowmetry in our department d uring Nev 2009 to Sep 2013 were studied. After drinking, patients voided spontaneously over aflowmeter in a private condition when they felt at them aximum sensation of bladder fullness. Parameters of maximum urine flow rate, average urine flow rate, urination time.urine flow tim e, voided volumes, to achieve maximum flow time and flow curves were recorded on a computer.Results 373 overactive bladder children, whose age between 1 to 17 old (mean 6.99±6.99 years). Effective bladder capacity of OAB children significantly lower than the corresponding age children’s functional bladder capacity. Different ages (less than 5 years of age group, the 5-8 years old, more than 8 years old group), effective bladder capacity is different and is proportional to the age. Different ages (less than 5 years of age group, the 5-8 years old, more than 8 years old group) between maximum urinary flow rate, average urine flow rate, and 2 seconds at the end of the urine flow rate is different, all is proportional to the age, statistically significant.Among them, the maximum urinary flow rate of girl group was obviously higher than that of boys group, statistically significant. Urination and tmax, boys and girls there is no statistical difference. At the same time, different ages (less than 5 years of age group, the 5-8 years old, more than 8 years old group) between the urination and tmax also no statistical difference. The result of Urinary flow rate curve of:197 cases of bell curve,52.8%; 64 cases of functional shape curve of bladder outlet obstruction(17.2%); 56 case of staccato curve, accounted for 15.0%; Intermittent voiding curve 26 cases (6.9%), Repressive urine flow curve 22 cases, accounting for 5.9%; Narrow type urine flow curve 8 cases, accounting for 2.1%.Conclusion Voiding abnormalities were detected in some of children with overactive bladder by uroflowmetry, majority of which were reduction of voided volume, decrease of maximum flowrates and detrusor urinae —sphincter in consistent. As compared with urodynamic test, the uroflowmetry result has the comparative efficacy, and easy to perform and not invasive. So it is worth applying to children with overactive bladder children.