Effect of Pulse Rate Changes on Clinical Outcome

NCT ID: NCT01164280

Last Updated: 2010-07-16

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

50 participants

Study Classification

INTERVENTIONAL

Study Start Date

2008-07-31

Study Completion Date

2010-01-31

Brief Summary

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Objectives: To evaluate the effect of pulse rate changes on the clinical response and stimulation related pain symptoms in sacral neuromodulation (SNM) treatment.

Materials and Methods: This pilot study evaluated the effect of 4 different pulse rates (5.2Hz-10Hz-21Hz-40Hz) in patients with suboptimal response to SNM. The effect of each frequency was evaluated over test period of 6 days. To avoid carry over effect, stimulation was kept off for 24 hours between consecutive test periods. The last 3 days of every test period, a voiding diary (VD) and questionnaire was filled in. The changes on clinical response and pain symptoms were compared between the four pulse-rates using multivariate analysis.

Results: Fifty patients were included of which 40 (80%) were female. Mean age was 55.5yr (SD 12.3). Forty-one patients (82%) had overactive bladder symptoms and 9 (18%) had chronic non-obstructive urinary retention. No significant difference was found regarding clinical outcome (VD and questionnaire) between the different pulse rates. Furthermore, none of the four pulse rates was significantly related to the occurrence of SNM-related pain. However, on individual basis, patients appear to benefit from changing the pulse rate concerning both treatment efficacy and stimulation related pain.

Conclusions: On group level, none of the four pulse rates in this study appears to have a significantly different effect on clinical outcome or SNM-related pain. However, a tailor-made approach for optimizing treatment efficacy by changing the pulse rate might be useful.

Detailed Description

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Conditions

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Overactive Bladder Syndrome Chronic Urinary Retention

Study Design

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Allocation Method

NA

Intervention Model

SINGLE_GROUP

Primary Study Purpose

TREATMENT

Study Groups

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Pulse Rate Change

Patients are subjected to different pulse rate settings of their neurostimulator. The effect of pulse rate changes on clinical outcome is measured.

Group Type EXPERIMENTAL

Pulse Rate Change

Intervention Type OTHER

Different pulse rate settings of the implantable neurostimulator

Interventions

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Pulse Rate Change

Different pulse rate settings of the implantable neurostimulator

Intervention Type OTHER

Eligibility Criteria

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Inclusion Criteria

* Patients who have been implanted with a neurostimulator for overactive bladder symptoms or urinary retention
* Patients with suboptimal effect of their neurostimulator

Exclusion Criteria

* Patients with 100% effect of their neurostimulator
Minimum Eligible Age

18 Years

Maximum Eligible Age

80 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Maastricht University Medical Center

OTHER

Sponsor Role lead

Responsible Party

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Maastricht University Medical Center

Principal Investigators

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Philip van Kerrebroeck, M.D., Ph.D.

Role: PRINCIPAL_INVESTIGATOR

Maastricht University Medical Centre

Locations

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Maastricht University Medical Centre

Maastricht, Limburg, Netherlands

Site Status

Countries

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Netherlands

Other Identifiers

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MEC 07-2-083 (5266)

Identifier Type: -

Identifier Source: org_study_id

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