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Does intraoperative electromyographic monitoring in lumbar microdiscectomy correlate with postoperative pain?
Vassilios G Dimopoulos1, Carlos H Feltes, Kostas N Fountas
1Department of Neurosurgery, Medical Center of Central Georgia, Mercer University School of Medicine, Macon, GA, USA. vasdimop@hotmail.com
Objectives:
Our objective was to correlate the findings of intraoperative electromyographic (EMG) monitoring with immediate postoperative pain in patients undergoing lumbar microdiscectomy.
Methods:
A total of 112 patients undergoing de novo lumbar microdiscectomy were prospectively randomized into a control group (n = 45) and a study group (n = 67) in which intraoperative EMG monitoring was used. Postoperative pain and postoperative narcotic consumption were recorded for each patient.
Results:
The presence or absence of EMG monitoring did not influence the level of reported pain in any anatomic area. In the monitored group, the degree of recorded nerve root irritation did not correlate with reported pain or postoperative narcotic consumption. The level of back pain was found to be significantly higher than the level of hip and calf pain (P < 0.0001).
Conclusions:
In our study no correlation was found between intraoperative EMG findings and immediate postoperative pain.
Insights
Intraoperative electromyographic (EMG) monitoring did not correlate with postoperative pain after lumbar microdiscectomy. This study found no link between EMG findings and patient-reported pain levels or narcotic use.
Area of Science:
- Neurosurgery
- Spinal Surgery
- Pain Management
Background:
- Lumbar microdiscectomy is a common surgical procedure for spinal conditions.
- Intraoperative monitoring techniques aim to improve surgical outcomes and reduce complications.
- Electromyographic (EMG) monitoring assesses nerve function during surgery.
Purpose of the Study:
- To investigate the relationship between intraoperative electromyographic (EMG) findings and immediate postoperative pain in patients undergoing lumbar microdiscectomy.
- To determine if EMG monitoring can predict pain levels following the procedure.
Main Methods:
- A prospective randomized study involving 112 patients undergoing lumbar microdiscectomy.
- Patients were divided into a control group (n=45) and an EMG monitoring group (n=67).
- Postoperative pain and narcotic consumption were systematically recorded for all participants.
Main Results:
- No significant difference in reported pain was observed between the EMG monitored group and the control group.
- The degree of nerve root irritation detected by EMG did not correlate with postoperative pain or narcotic requirements.
- Back pain was reported at a significantly higher level than hip and calf pain (P < 0.0001).
Conclusions:
- Intraoperative EMG monitoring findings did not correlate with immediate postoperative pain after lumbar microdiscectomy in this study.
- The utility of intraoperative EMG monitoring for predicting postoperative pain in this context requires further investigation.