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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.
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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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[Infiltration anesthesia].

Dominik Saul1, Jonathan Roch2, Wolfgang Lehmann2

  • 1Klinik für Unfallchirurgie, Orthopädie und Plastische Chirurgie, Universitätsmedizin Göttingen, Georg-August-Universität, Robert-Koch-Straße 40, 37075, Göttingen, Deutschland. Dominik.saul@med.uni-goettingen.de.

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Summary
This summary is machine-generated.

Local anesthesia effectively numbs skin and soft tissues for minor surgeries and pain relief. Techniques like local infiltration anesthesia (LIA) can reduce pain medication needs and improve mobility after procedures.

Keywords:
AnestheticsIntradermal injectionsIntramuscular injectionLocal anesthesiaSubcutaneous injections

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Area of Science:

  • Anesthesiology
  • Surgical Procedures

Background:

  • Local anesthesia is a cornerstone of pain management in various medical settings.
  • Intradermal, subcutaneous, and intramuscular injections are common routes for local anesthetic administration.

Purpose of the Study:

  • To describe the applications and techniques of local anesthesia for achieving complete anesthesia in skin and soft tissue areas.
  • To highlight the benefits of local infiltration anesthesia (LIA) in postoperative pain management.

Main Methods:

  • Administration of local anesthetics via intradermal, subcutaneous, or intramuscular routes.
  • Application in minor surgical procedures including facial, dental, and limb surgeries.
  • Use in postoperative analgesia, specifically local infiltration anesthesia (LIA).

Main Results:

  • Local anesthesia effectively blocks nerve transmission, enabling surgical treatment of larger skin areas through infiltration or field blocks.
  • Postoperative LIA following knee or hip arthroplasty can decrease analgesic consumption and promote early patient mobilization.
  • Careful adaptation of anesthetic dosage to the surgical extent and maximum dose is crucial.

Conclusions:

  • Local anesthesia, particularly LIA, offers a versatile and effective method for surgical anesthesia and postoperative pain control.
  • The technique is suitable for a range of procedures, from minor surgeries to major joint replacements.
  • Optimizing dosage and considering the presence of end arteries are key to safe and effective local anesthetic use.