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A new technique of continuous interscalene nerve block
A P Boezaart1, J F de Beer, C du Toit
1Cape Shoulder Institute, Cape Town, South Africa. apbzrt@iafrica.com
Summary
A new technique for indwelling interscalene catheter placement effectively reduced postoperative pain and complications in shoulder surgery patients. This method offers a safer alternative for brachial plexus anesthesia.
Area of Science:
- Anesthesiology
- Regional Anesthesia
- Surgical Procedures
Background:
- Interscalene nerve block (ISNB) is commonly used for shoulder surgery.
- Traditional techniques may be associated with complications.
- Evaluating novel catheter placement techniques is crucial for improving patient outcomes.
Purpose of the Study:
- To describe a novel technique for indwelling interscalene catheter placement.
- To evaluate the efficacy and complication profile of this technique compared to existing methods.
Main Methods:
- 120 patients undergoing major shoulder surgery were divided into three groups.
- Group 1: Winnie's technique; Group 2: Winnie's technique with nerve stimulator; Group 3: Epidural needle and catheter with nerve stimulator.
- Pain, diaphragmatic movement, and complications (phrenic nerve block, recurrent laryngeal nerve paralysis, Horner's syndrome) were assessed.
Main Results:
- Group 3 demonstrated significantly less diaphragmatic movement and no postoperative pain.
- Phrenic nerve block was highest in Group 1 (85%) and lowest in Group 3 (20%).
- Group 3 had no instances of recurrent laryngeal nerve paralysis or Horner's syndrome, and catheters remained secure.
Conclusions:
- Indwelling catheter placement into the brachial plexus sheath using the described technique is effective.
- This method is associated with a lower incidence of complications compared to traditional techniques.
- The technique offers a safe and effective option for regional anesthesia in shoulder surgery.
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