Urodynamic Assessment of Neurogenic Bladder in Spinal Cord Injury


Objective: The aim of this study is to describe the urodynamic findings that distinguish upper from lower motor neuron bladder dysfunction in spinal cord injured patients & to evaluate the benefit of medications used to treat their voiding disorders.Patients & methods: Ninety-one patients (57 males, 34 females, age range 5 to 80 years) with neurogenic bladder caused by spinal cord injury were studied from January 2005 to July 2006. They were classified into two groups; first group (58) patients with incontinence of urine & second group (33) patients with retention of urine. All patients underwent urodynamic studies using (Duet-Logic G2) system.Results: In the first group of patients urodynamic testing had shown that the cause of incontinence of urine was detrusor overactivity which is a typical finding of upper motor neuron (UMN) bladder dysfunction while in the second group urine retention was attributed to underactive detrusor which is usually seen in lower motor neuron (LMN) bladders. Conclusion: Management of the urinary tract in spinal cord injured individuals should be based on urodunamic principles & findings in addition to the neurologic history & physical examination.Key words: Spinal cord injuries, Urodynamic, Neurogenic bladder.