Detrusor pressure in cystometry compared to physiological filling in patients with a reflex urinary bladder after spinal cord injury
Thyberg M, Spångberg A, Lassvik C
Department of Rehabilitation Medicine, Linköping University Hospital, Sweden
The maximum detrusor pressure and the duration of detrusor contractions in 10-50 ml/min fill cystometry were compared to the corresponding measurements during 12 hours of physiological filling, in 18 patients with a reflex urinary bladder after spinal cord injury. In four consecutive cystometries with 10 min intervals the intraindividual variation of the maximum detrusor pressure and the duration of detrusor contractions were similar to the variation during physiological filling. The mean pressure values in cystometries of each patient correlated well with the mean values in registration during physiological filling. In cystometry, there was no significant difference between mean values in 50 ml/min filling compared to 10 ml/min filling nor between mean values in first and second cystometries compared to third and fourth cystometries. Thus, mean values from a series of 10 ml/min or 50 ml/min fill cystometries appear to be as useful as registrations during physiological filling to describe the mean maximum detrusor pressure and the mean duration of contractions in a patient with a spinal reflex bladder.
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