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  4. Bladder response to acute sacral neuromodulation while treating rats in different phases of complete spinal cord injury: a preliminary study

Bladder response to acute sacral neuromodulation while treating rats in different phases of complete spinal cord injury: a preliminary study

Int Braz J Urol, 2015 · DOI: 10.1590/S1677-5538.IBJU.2014.0144 · Published: November 1, 2015

Spinal Cord InjuryUrologyNeurology

Simple Explanation

This study explores sacral neuromodulation (SNM) as a potential non-destructive treatment for bladder dysfunction in spinal cord injury (SCI) patients. The research investigates how the timing of SNM treatment affects bladder response in rats with complete SCI, aiming to provide insights for optimizing the use of this technique. The study analyzes cystometric parameters in rats before and after SNM treatment during different phases of SCI, focusing on contraction time, duration, and bladder pressure.

Study Duration
Not specified
Participants
Female Sprague-Dawley rats
Evidence Level
Not specified

Key Findings

  • 1
    SNM's effectiveness varies depending on the phase of SCI: early phase (less than two weeks post-spinalization) showed minimal increases in contraction time and duration.
  • 2
    Rats treated two to four weeks post-spinalization showed substantial increases in contraction time and duration after SNM, with average value changes exceeding 90%.
  • 3
    Rats treated more than five weeks post-spinalization showed increased contraction time and duration after SNM, but the magnitude of changes was less than 30%.

Research Summary

This study investigates the effectiveness of acute sacral neuromodulation (SNM) on bladder responses in rats with complete spinal cord injury (SCI) during different phases post-injury. The results indicate that SNM is most effective after the spinal shock phase and before the development of detrusor overactivity, suggesting that the timing of SNM treatment is crucial. The study found that the greatest improvements in bladder function, specifically in contraction time and duration, occurred when SNM was applied two to four weeks post-spinalization.

Practical Implications

Optimal Timing of SNM

The study suggests that the timing of SNM treatment is critical for maximizing its effectiveness in SCI patients, particularly during the period after spinal shock and before detrusor overactivity develops.

Personalized Treatment Approaches

The findings support the development of personalized treatment approaches that consider the specific phase of SCI when implementing SNM therapy.

Further Research

The results warrant further investigation into the mechanisms underlying the varying effectiveness of SNM during different SCI phases, which could lead to improved therapeutic strategies.

Study Limitations

  • 1
    Small sample size
  • 2
    Animal model may not fully replicate human SCI
  • 3
    Acute SNM treatment effects only

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