alexa Vesicoureteral reflux and elimination disorders.


Pediatrics & Therapeutics

Author(s): Alova I, Lottmann HB

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Abstract Two kinds of elimination disorders can be associated with Vesico Ureteral Reflux (VUR): pure bladder elimination disorders or combination of bladder and bowel elimination disorders. An elimination disorder is always a factor which worsens the prognosis of VUR, as it increases the risk of infectious complications and thus presents a threat for the upper urinary tract. Regarding pure bladder elimination disorders, a chronic urine residue is observed in four clinical situations: the syndrome megacystis-mega ureter; the mega bladder without mega ureter, but with VUR; high grade massive VUR without a mega bladder; organic obstructions of the urethra (such as posterior urethral valves.). VUR associated with urine and fecal elimination disorders cover functional pelvi perineal dyscoordination, bladder sphincter dysynergia, disturbances of visceral motricity and anal sphincter function. The most characteristic type is represented by the neuropathic detrusor-sphincter dysfunction; also enter in this category neurogenic non-neurogenic bladders (Hinman's syndrome); However the vast majority of urine and fecal elimination disorders is represented by non neuropathic perineal dyscoordination associating at various degrees: voiding postponement, lack of sphincter relaxation during micturation, interrupted voiding, and constipation. The diagnosis of elimination disorders associated with VUR is based on non invasive investigations such as anamnesis and drinking/voiding chart in children and adolescents, and "four observation test" in infants. Ultrasound and uroflowmetry are also useful tools. Invasive investigations include mainly voiding cystourethrography and urodynamics, ideally combined in video urodynamic studies. The management of urinary and intestinal elimination disorders is based on the prevention of infections, the suppression of the post voiding residual urine and the treatment of an associated constipation. If surgical treatment of VUR is needed, it must be associated to the management of elimination disorders in the peri operative period. In many instances, an appropriate treatment of elimination disorders often leads to the VUR resolution.
This article was published in Arch Esp Urol and referenced in Pediatrics & Therapeutics

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