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New screening technique for sacral nerve stimulation under local anaesthesia.
F H Hetzer1, D Hahnloser, Y Knoblauch
1Clinic for Visceral and Transplantation Surgery, University Hospital, Ramistr. 100, 8091, Zurich, Switzerland.
Techniques in Coloproctology
|May 4, 2005
Summary
The tined lead electrode significantly improved success rates in percutaneous nerve evaluation (PNE) screening compared to conventional electrodes. Local anesthesia is suitable for same-day PNE testing and tined lead implantation.
Area of Science:
- Neurology
- Medical Devices
- Anesthesiology
Background:
- Percutaneous nerve evaluation (PNE) is a diagnostic procedure.
- The choice of anesthesia and electrode type may impact PNE success.
Purpose of the Study:
- To evaluate the impact of anesthesia type (local vs. general) and electrode type (conventional vs. tined lead) on PNE screening success.
Main Methods:
- 25 PNE tests were conducted in 20 patients between 2001 and 2004.
- Initially, conventional electrodes were used, followed by tined lead electrodes from 2003 onwards.
- Success was defined as a >50% symptom reduction.
Main Results:
- Implantation occurred in 68% of patients; 90% of those using tined leads were implanted versus 29% with conventional electrodes (p=0.005).
- Anesthesia type did not significantly affect success rates (local 46% vs. general 61%, p=0.682).
Conclusions:
- Tined lead electrodes significantly enhance PNE screening success rates.
- PNE and tined lead implantation can be performed concurrently under local anesthesia.