[Study of voiding disturbances in elderly males. III. Analysis of flow rates and patterns in uroflowmetric studies: comparison between children, young adults and elderly men].
We performed uroflowmetric study in 8 boys (7 approximately 14 years old), 20 young adults (19 approximately 39 years old) and 552 elderly men (40 approximately 93 years old) with a DISA 21C10 mictiometer, and obtained 753 studies. Uroflowmetric studies were classified into 6 patterns: N type (normal), NB type (neurogenic bladder: wave-like curve), OB type (obstructive diseases: flat curve), AP type (anterior peak), PP type (posterior peak) and OT type (others). We studied the relationship between age and uroflowmetry with patterns and flow rates (maximum flow rate = MFR, average flow rate = AFR). In men over 19 years old, flow rates (MFR, AFR) decreased proportionally with age (MFR: 2.9 ml/s/10 years old, AFR: 1.6 ml/s/10 years old). In elderly men (over 40 years old), the N type flow curve decreased and OB type flow curves increased gradually with age.
D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000375:Aging / Q000502:physiology*; D002648:Child; D006801:Humans; D008297:Male; D008875:Middle Aged; D014555:Urination Disorders / Q000503:physiopathology; D014563:Urodynamics