Synchronous cystosphincterometry in patients with spinal cord injury. Studies with continuous bladder and urethral infusions and physical factors influencing interpretation
Abstract
A technique of synchronous study for monitoring the bladder activity and simultaneous urethral sphincteric responses is described. This study was made possible by using a 12 F trilumen catheter with which intravesical infusion and independent bladder pressure recording were conducted. Constant urethral infusion with intrasphincteric pressure recording was arranged through the third lumen of the trilumen catheter. This radiologic aided study was used for functional evaluation of the bladder and its outlet. The bulit-in artefacts of the technique were assessed. The physical factors, such as urethral infusion flow rate and the compliance of infusion catheter hydraulic system governing interpretation of the study during nonvoiding states, are described. With an experience of 100 studies on 75 patients with spinal cord injury and 5 normal subjects, this method has been found to be a useful clinical urodynamic technique well suited even to a nonambulatory patients with spinal cord injury.
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