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[Tourniquet pain: anatomic-physiological notes and clinical aspects]
F Ramaioli1, D De-Amici, P Ceriana
1Servizio di Anestesia e Rianimazione II, IRCCS Policlinico S. Matteo, Pavia.
Minerva Anestesiologica
|July 1, 1996
Summary
Tourniquet pain is complex, involving both peripheral nociceptors and direct nerve stimulation. Even successful anesthetic blockade may not prevent this pain due to activated C and A-beta fibers.
Area of Science:
- Anesthesiology
- Pain Management
- Neuroscience
Context:
- Tourniquet application is common in surgery, but tourniquet pain remains a significant challenge.
- Understanding the physiological basis of tourniquet pain is crucial for effective pain management.
- Previous literature suggests complex mechanisms underlying tourniquet pain, even with successful anesthesia.
Purpose:
- To elucidate the complex mechanisms of tourniquet pain.
- To explain why anesthetic blockade does not always prevent tourniquet pain.
- To review the physiological basis of tourniquet pain based on existing literature.
Summary:
- Tourniquet pain is nociceptive, arising from both peripheral nociceptor activation and direct axonal stimulation of nerve trunks.
- Ischemia and mechanical compression activate C-fibers resistant to ischemia, contributing to severe pain.
- A-beta fibers are also involved through the activation of low-threshold mechanoreceptors.
Impact:
- Provides a deeper understanding of tourniquet pain mechanisms.
- Informs clinical strategies for managing tourniquet pain.
- Highlights the role of both nociceptive and mechanosensitive pathways in tourniquet pain.