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Related Concept Videos

Local Anesthetics: Clinical Application as Intravenous Regional Anesthesia01:16

Local Anesthetics: Clinical Application as Intravenous Regional Anesthesia

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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.
One of the advantages of...
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Local Anesthetics: Clinical Application as Spinal Anesthesia01:11

Local Anesthetics: Clinical Application as Spinal Anesthesia

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Spinal anesthetics are given during lower abdomen and limb surgeries to block sensory and motor neurons. They are administered in the mid to low lumbar regions, primarily acting on the cauda equina's nerve roots. The blockade level depends on the local anesthetic (LA) concentration. Usually, low LA concentrations are sufficient to block sensory fibers, while only high LA concentrations block motor fibers. Other factors like injection volume and speed, the patient's posture, and the drug...
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Local Anesthetics: Clinical Application as Epidural Anesthesia01:29

Local Anesthetics: Clinical Application as Epidural Anesthesia

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Epidural anesthetics are administered in the fat-filled epidural space, the outermost part of the spinal canal. This technique is commonly employed for pain management and anesthesia during lower abdomen and pelvis surgeries or labor and delivery.
Since epidural anesthetics can be infused through an epidural catheter, all types of drugs, including short-acting ones, can be administered. Chloroprocaine and lidocaine are examples of short and long-duration anesthetics, respectively. Bupivacaine...
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Peripheral Artery Disease V: Postoperative Nursing Management01:23

Peripheral Artery Disease V: Postoperative Nursing Management

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During the postoperative period, it is crucial to focus on maintaining circulation, identifying and managing potential complications, and planning for discharge.Nursing AssessmentVital signs monitoring: Regularly monitor vital signs, including blood pressure, heart rate, respiratory rate, and temperature, to detect early signs of complications such as bleeding and infection.Circulation assessment: Monitor pulses, perform Doppler assessments, and check capillary refill, color, temperature, and...
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Local Anesthetics: Clinical Application as Surface, Infiltration, and Conduction Block Anesthesia01:30

Local Anesthetics: Clinical Application as Surface, Infiltration, and Conduction Block Anesthesia

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Depending on the target organ, local anesthetics (LAs) can be administered via various routes. In surface anesthesia, LAs are applied directly to the surface of the skin or mucous membranes. It is widely used for topical skin numbing before venipuncture or minor surgical procedures. Commonly used surface local anesthetics are lidocaine or benzocaine sprays or creams. Surface anesthesia occurs within 5 minutes and lasts for about 60 minutes. One of the main disadvantages of topical anesthesia is...
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Analgesia and Pain Management01:25

Analgesia and Pain Management

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Pain is critical to various clinical pathologies, provoking an urgent need for effective management. Pain, whether acute or chronic, is a complex neurochemical process. Its alleviation depends on the type, with nonopioid analgesics effective for mild to moderate pain, such as musculoskeletal or inflammatory pain, while neuropathic pain responds best to anticonvulsants, tricyclic antidepressants, or serotonin/norepinephrine reuptake inhibitors. For severe acute or chronic pain, opioids may be...
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Electrophysiological Methods to Assess Peripheral Pain Block in an Anesthetized Rat
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Regional analgesia techniques for total knee replacement.

Martin C R Bauer1, Esther M Pogatzki-Zahn, Peter K Zahn

  • 1aClinic for Anesthesiology, Intensive Care Medicine, Palliative Medicine and Pain Medicine, University Hospital Bergmannsheil, Bochum bDepartment of Anesthesiology, Intensive Care and Pain Medicine, University Hospital Muenster, Muenster, Germany.

Current Opinion in Anaesthesiology
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Summary

Femoral nerve blocks remain the top choice for knee replacement pain relief, offering effective pain control. Newer methods like local infiltration analgesia show promise for better outcomes with fewer side effects.

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Area of Science:

  • Anesthesiology
  • Orthopedic Surgery
  • Pain Management

Background:

  • Postoperative pain management after total knee arthroplasty (TKA) is crucial for patient recovery and function.
  • Achieving adequate analgesia while minimizing opioid use and preserving motor strength is a key challenge.
  • Regional analgesia techniques are widely employed to meet these goals.

Purpose of the Study:

  • To review and compare the benefits and risks of various regional analgesia techniques for TKA.
  • To discuss new findings on established and emerging pain management strategies.
  • To guide clinical decision-making in postoperative pain control for TKA.

Main Methods:

  • Systematic review of current literature on regional analgesia for TKA.
  • Analysis of evidence regarding femoral nerve blocks, lumbar epidurals, local infiltration analgesia, and adductor canal blocks.
  • Evaluation of pain control, opioid consumption, motor strength, and complication rates.

Main Results:

  • Femoral nerve blocks are considered the gold standard, though potential motor weakness exists.
  • Lumbar epidurals present an unfavorable risk/benefit ratio due to hematoma risk.
  • Local infiltration analgesia and adductor canal blocks show promise for effective pain relief with minimal side effects.

Conclusions:

  • Femoral nerve blocks remain the preferred method for TKA analgesia, supplemented by oral opioids if necessary.
  • The addition of sciatic nerve blocks is controversial and requires individualized assessment.
  • Further large-scale studies are needed to validate the efficacy of newer techniques like local infiltration analgesia and adductor canal block.