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Intravenous regional anesthesia (IVRA), or Bier block, is a long-established anesthetic technique for short surgical procedures and managing extremity pain. The method involves administering a local anesthetic into the venous system of an isolated limb after tourniquet application, resulting in rapid, reversible anesthesia. IVRA remains valuable in outpatient, perioperative, and emergency settings due to its simplicity, effectiveness, and minimal equipment needs. Safe use requires substantial knowledge of anatomy, pharmacology, patient selection, and technique. Complications such as local anesthetic systemic toxicity, methemoglobinemia, and tourniquet injury necessitate vigilance and readiness for immediate management. Innovations such as forearm tourniquet placement and adjunctive medications, including ketorolac, dexmedetomidine, and ketamine, enhance comfort, extend duration, and improve safety. Participants in this course gain comprehensive knowledge and technical proficiency in performing IVRA using updated, evidence-based protocols. Instruction focuses on patient selection, dosing, procedural technique, and rapid recognition and treatment of complications. Clinicians learn to apply safety checklists, integrate adjuncts, and optimize outcomes through structured interprofessional collaboration. Anesthesia clinicians, surgeons, perioperative nurses, and emergency staff coordinate during preparation, monitoring, and recovery, ensuring efficiency and communication. Participants enhance patient safety, minimize complications, and deliver high-quality anesthesia care across diverse clinical environments by improving procedural skills and teamwork. Objectives: Identify patients who are candidates for Bier block (intravenous regional anesthesia), based on knowledge of the contraindications and the potential risks associated with the procedure. Apply evidence-based knowledge and techniques for performing intravenous regional anesthesia, including forearm tourniquet placement, local anesthetic, and adjunct choice. Identify signs and symptoms of intravenous regional anesthesia complications, such as tourniquet pain, local anesthetic systemic toxicity, and steps to manage them. Implement effective interprofessional team strategies to develop a structured approach for providing adequate care to and appropriate surveillance of patients undergoing a Bier block.

Identify signs and symptoms of intravenous regional anesthesia complications, such as tourniquet pain, local anesthetic systemic toxicity, and steps to manage them. Implement effective interprofessional team strategies to develop a structured approach for providing adequate care to and appropriate surveillance of patients undergoing a Bier block. Access free multiple choice questions on this topic.

Intravenous regional anesthesia (IVRA), also known as the Bier block, was first described in 1908 by August Bier. The procedure involves exsanguination of the extremity, proximal application of a tourniquet, and intravenous injection of local anesthetic to confine anesthesia to an extremity. Tourniquet pain often limits the duration of the block to less than 60 minutes. Although initially overlooked, the technique regained traction in the 1960s following Charles Holmes’ publications and has since become a staple for short-duration extremity procedures, especially in ambulatory, emergency, and resource-limited environments. The enduring appeal includes rapid onset, minimal equipment requirements, reliable anesthesia, and minimal systemic effects when performed correctly.[1][2][3][4] Over the past decade, refinements in tourniquet placement, use of adjunctive medications, and safety protocols have enhanced patient comfort and workflow efficiency. Forearm tourniquet techniques, for example, reduce anesthetic volume and tourniquet pain, enabling faster turnover and, in some cases, bypassing the postanesthesia care unit. Emerging data from randomized controlled trials have further validated the efficacy and expanded the potential applications of the Bier block beyond its traditional scope.[5][6][7][8][9][10][11] The block is also successful in managing pain in patients with palmar hyperhidrosis receiving botulinum toxin injections; it serves as an adjunct for complex regional pain syndrome type 1, offering an alternative to repeated stellate ganglion blocks.[12][13] This article reviews anatomy, indications, and contraindications, while exploring technique variations, adjuncts, complications, and interprofessional care aligned with current practice standards.

Complications Complications arising from the Bier block are rare. Recent randomized controlled clinical trials using forearm techniques report no significant complications, reinforcing the safety of contemporary practice.[1][2][3][4][5][27] From 1980 to 1999, the American Society of Anesthesiologists' Closed Claims Project reported 3 cases of death or brain damage related to IVRA. These complications and the necessary interventions are summarized in Table 3. Table Table 3. Complications of the Bier Block (IVRA).

To enhance patient-centered care, outcomes, and patient safety, coordinated, interprofessional collaboration is necessary: Preprocedure teamwork: Nurses, anesthesiologists, and surgeons should identify the indication, assess contraindications, and obtain informed consent before the procedure. Equipment preparation: Operating room personnel should ensure the tourniquet is functional and that Esmarch bandages are available. Resuscitation equipment should be present, including 20% lipid emulsion and methylene blue if prilocaine is used. Intraprocedure monitoring: Standard American Society of Anesthesiologists' monitors should be used to monitor vital signs. The anesthesia team should monitor patient comfort and, together with the surgical and nursing teams, remain aware of the tourniquet status and duration of inflation, and address potential complications such as local anesthesia systemic toxicity. Postprocedure surveillance: After the cuff is deflated, the team should observe for signs of reperfusion syndrome and local anesthesia systemic toxicity, manage analgesia, and assess the extremity for ischemia or nerve injury. Quality improvement: The team should also collect outcomes data (eg, incidence of tourniquet pain, episodes of local anesthesia systemic toxicity, postoperative care unit time, and patient satisfaction) to refine protocols and drive continuous practice improvement.