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  • Title: The value of urodynamics and bladder management in predicting upper urinary tract complications in male spinal cord injury patients.
    Author: Killorin W, Gray M, Bennett JK, Green BG.
    Journal: Paraplegia; 1992 Jun; 30(6):437-41. PubMed ID: 1635794.
    Abstract:
    A review of 160 male patients admitted to the Shepherd Spinal Center was completed to determine the influence of urodynamic findings and choice of bladder management program on the risk of developing upper urinary tract distress following acute spinal injury. Within the context of this investigation, upper urinary tract distress was defined as presence of hydronephrosis, febrile urinary tract infection, urolithasis or vesicoureteral reflux. Three groups were identified according to the urodynamic findings and the bladder management program. Thirty-four subjects with preservation of detrusor function managed their bladders by spontaneous voiding. Seventy patients with detrusor areflexia managed their bladders via intermittent catheterization; and 56 males who had detrusor hyperreflexia on urodynamics were managed by a reflex voiding program with condom drainage. None of the subjects with preservation of spontaneous voiding function experienced upper tract distress. Seven percent of those on intermittent catheterization and 32% of those managed by a reflex voiding program experienced upper tract distress. The presence of detrusor hyperreflexia with or without vesicosphincter dyssynergia influenced the likelihood that subjects would experience upper urinary tract distress following spinal injury. While traditional urodynamics failed to distinguish patients managed by a reflex voiding program who experienced upper tract distress from those who did not, calculation of a new urodynamic variable, the urethral pressure gradient, was found to assist in this prediction.
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