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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: Common Agents and Their Applications01:23

Local Anesthetics: Common Agents and Their Applications

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Local anesthetics (LAs) are commonly used for various applications in medical and dental procedures. Some of the common agents used are cocaine, lidocaine, and bupivacaine.
Cocaine is an ester of benzoic acid and methylecgogine. It is used to anesthetize and vasoconstrict locally. Currently, it is used primarily for topical applications. It is beneficial for surgeries on the upper respiratory tract, providing anesthesia and shrinking the mucosa. Cocaine in the form of cocaine hydrochloride is...
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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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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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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: Pharmacokinetics01:13

Local Anesthetics: Pharmacokinetics

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The potency and duration of action of local anesthetics (LAs) are determined by their pharmacokinetics. Pharmacokinetics describes how LAs are absorbed, distributed, metabolized, and eliminated from the body. When administered to the vascular tissues, LAs are quickly absorbed and enter the systemic circulation, reducing their localized effects. Adding vasoconstrictors such as epinephrine to LAs reduces their absorption into the systemic circulation, making them clinically effective. The...
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Continuous regional anesthesia and inflammation: a new target.

I Grosu1, P Lavand'homme

  • 1Department of Anesthesiology, St Luc Hospital UCL Medical School, Brussels, Belgium - patricia.lavandhomme@uclouvain.be.

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Summary

Regional anesthesia (RA) techniques modulate inflammation perioperatively, but clinical outcomes beyond pain relief remain inconsistent. Further research is needed for individualized patient management and improved perioperative medicine.

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Area of Science:

  • Perioperative Medicine
  • Immunology
  • Anesthesiology

Background:

  • Inflammation is a critical host defense mechanism crucial for homeostasis.
  • Perioperative inflammation significantly impacts patient recovery and postoperative outcomes.
  • Controlling perioperative inflammation may enhance patient recovery.

Purpose of the Study:

  • To review the interaction between regional anesthesia (RA) techniques and inflammation in perioperative medicine.
  • To explore how RA components modulate the inflammatory response to surgical injury.
  • To address the discrepancy between experimental and clinical findings on RA's impact on patient outcomes.

Main Methods:

  • Review of current knowledge on RA techniques and their effects on inflammation.
  • Analysis of experimental and clinical studies investigating RA's modulation of inflammatory responses.
  • Discussion of the mechanisms by which local anesthetics and alpha-2 adrenergic agonists influence inflammation.

Main Results:

  • Experimental studies indicate RA modulates local and systemic inflammatory reactions.
  • Clinical findings show inconsistent effects of RA on major patient outcomes, primarily limited to postoperative analgesia.
  • A discrepancy exists between experimental evidence and clinical observations regarding RA's broader impact.

Conclusions:

  • RA techniques, including local anesthetics and adjuvants, can modulate perioperative inflammation.
  • Current clinical evidence does not consistently support RA's significant impact on major patient outcomes beyond analgesia.
  • Individualized patient management and advanced tools for assessing inflammatory profiles are crucial for future perioperative medicine advancements.