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Local Anesthetics: Clinical Application as Intravenous Regional Anesthesia

Local Anesthetics: Clinical Application as Intravenous Regional Anesthesia

Intravenous regional anesthesia or the Bier block technique is used to anesthetize a specific limb or extremity. It uses exsanguinated or blood-drained vessels to transport local anesthetics or LAs to the peripheral nerve trunks. Lidocaine without vasoconstrictors like epinephrine is most commonly used for this technique. Other drugs used are prilocaine, ropivacaine, and chloroprocaine. Bupivacaine is not recommended for this technique due to its high cardiac toxicity.
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Related Experiment Video

Updated: Jun 28, 2026

Orthotopic Aortic Transplantation in Mice for the Study of Vascular Disease

Orthotopic Aortic Transplantation in Mice for the Study of Vascular Disease

Published on: November 28, 2012

Anesthesia for free vascularized tissue transfer.

Natalia Hagau¹, Dan Longrois

¹Department of Anesthesia and Intensive Care, University of Medicine and Pharmacy Iuliu Hatieganu, Cluj-Napoca, Romania. hagaunatalia@gmail.com

|October 24, 2008

Summary

This summary is machine-generated.

Anesthesia management is crucial for microsurgery success, focusing on optimal blood flow to free flaps. Key goals include maintaining circulation, body temperature, and avoiding vasoconstriction for better surgical outcomes.

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Area of Science:

Anesthesiology
Vascular Surgery
Surgical Oncology

Background:

Anesthesia plays a vital role in microsurgery by managing hemodynamics and regional blood flow.
Maintaining optimal blood flow to vascularized free flaps is a primary intraoperative objective.
Factors like temperature, pain, anxiety, and certain drugs can induce vasoconstriction, impacting flap viability.

Purpose of the Study:

To outline the anesthetic goals for optimizing vascularized free flap survival in microsurgery.
To discuss strategies for achieving hyperdynamic circulation and maintaining homeostasis.
To highlight the choice of anesthetics, such as sevoflurane, for mitigating ischemia-reperfusion injury.

Main Methods:

Review of anesthetic principles and strategies for microsurgical procedures.
Discussion of hemodynamic management, including volume replacement and vasodilation.
Emphasis on maintaining physiological homeostasis (avoiding hyperoxia, hypocapnia, hypovolemia).

Main Results:

Optimal anesthesia involves increasing circulatory blood flow and maintaining normal body temperature.
Reducing vasoconstriction from pain, anxiety, hyperventilation, or drugs is essential.
Hyperdynamic circulation can be achieved through hemodilution and decreased systemic vascular resistance.

Conclusions:

General anesthesia combined with regional anesthesia is preferred for microvascular surgery.
Maintaining homeostasis and avoiding factors that decrease cardiac output or induce vasoconstriction are critical.
Inhalatory anesthetics like sevoflurane are favored for their potential to attenuate ischemia-reperfusion injury.