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Published on: August 28, 2020
Influence of bladder lithiasis on lower urinary tract dynamics in patients with spinal cord injury
M Vírseda-Chamorro1, J Salinas-Casado2, Á Barroso-Manso3
1Urology Department, Hospital Nacional de Parapléjicos, Toledo, Spain.
Study Design:
A prospective and a case-matched control study.
Objectives:
To study the lower urinary tract dysfunction associated with bladder lithiasis in patients with spinal cord injury (SCI).
Setting:
Toledo (Spain).
Methods:
We have carried out a urodynamic study in 30 patients with SCI with lithiasis in their bladder before and 3 months after bladder endoscopic lithotripsy. This second study was compared with the urodynamic findings of a different group of 30 patients with SCI, without a history of bladder lithiasis, paired with cases by gender and date of urodynamic study.
Results:
We have found that the prevalence of neurogenic detrusor overactivity (NDO) was significantly different after bladder lithotripsy, although the cystomanometric capacity was significantly increased. A group of patients with lithiasis showed a maximum flow rate, a voiding maximum detrusor pressure and the detrusor contractility parameter Wmax lower than that in controls. On the other hand, a voiding abdominal straining was found to be significantly greater than that in controls.
Conclusions:
Bladder lithiasis affects the presence of NDO in patients with SCI. Patients with SCI who develop bladder lithiasis present a lower detrusor contractility power compared with those who do not.
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