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Clinical Trial Summary

The purpose of this study is to evaluate if it is possible to use intravaginal high-density surface electromyography to guide Botulinum neurotoxin (BoNT) injection to treat pelvic floor muscle overactivity that complicates Chronic Pelvic Pain (CPP).

Clinical Trial Description

The management of pelvic floor overactivity (PFOA) using focal BoNT injection has been gaining clinical interest. Evidence has shown that BoNT injections to the levator ani in patients with CPP generated a greater than 50% improvement in symptoms at least 72% of the time, suggesting a promising efficacy of BoNT therapy. The current clinical standard for BoNT injection employs a fixed injection template or the manual palpation of a contracted muscle, followed by an injection towards the palpating finger. As such, the injection is highly subjective, operator-dependent, variable, and not tailored to individual patients, which may lead to inconsistent outcomes. Trigger point targeted injections have been practiced for many years worldwide, yet a recent randomized controlled trial reported no significant difference in outcome between trigger point targeted BoNT injections versus a saline placebo. Furthermore, it has also been reported that neuromuscular junction (NMJ) and trigger points are distributed in well-defined separate areas with a distance of approximately 10 mm apart. It has also been shown that BoNT injections made 10 mm away from the NMJ can reduce the efficacy of BoNT by 46%. Therefore, injections targeted at the trigger point may, in turn, compromise therapeutic efficacy. The rationale of this study is that BoNT acts at the NMJ, where the neuromuscular junctions are densely located. By specifying the muscle(s) responsible for the pelvic floor overactivity, and the offending NMJ using high density surface electromyography (HD-sEMG), BoNT can be injected with greater accuracy and objectivity to optimize treatment efficacy. The investigators aim to test the hypothesis that interstitial cystitis patients in the guided injection arm will demonstrate lower hypertonic metrics and improved quality of life. The purpose of this study is to provide preliminary evidence supporting the use of HD-sEMG and NMJ mapping to guide BoNT efficacy. ;

Study Design

Related Conditions & MeSH terms

NCT number NCT05062902
Study type Interventional
Source HillMed Inc.
Contact Nicholas C Dias, PhD
Phone 2816581953
Email [email protected]
Status Not yet recruiting
Phase Early Phase 1
Start date January 1, 2023
Completion date July 25, 2025

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