SurgeryLesson 1 of 1 in the course Anesthesia

Local Anesthesia: Mechanisms, Techniques, and Risks

5 flashcards · 5 quiz questions · 5 match pairs · 5 fill-in sentences · English

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Summary

Local anesthesia reduces or eliminates sensation in a particular part of the body, most often to limit pain during a procedure. This lesson introduces its terminology, how local anesthetics work, common techniques, potential adverse effects, historical milestones, and non-pharmacological approaches to local pain management.

Local anesthesia is anesthesia of a small area, such as a tooth or patch of skin. Regional anesthesia aims to anesthetize a larger region, such as an arm or leg. Conduction anesthesia is a broad term that encompasses many local and regional techniques.

All flashcards

How do local anesthetics primarily interrupt pain signals?
They reversibly block voltage-gated sodium channels in neuronal membranes, preventing action potentials from initiating and propagating along sensory nerves.
How do local and regional anesthesia differ?
Local anesthesia targets a small area, such as a tooth or patch of skin; regional anesthesia targets a larger region, such as an arm or leg.
What is infiltration anesthesia?
Direct injection of anesthetic into tissue near the procedure site.
Name two possible complications of local anesthesia.
Examples include prolonged anesthesia and paresthesia.
What does ultrasound guidance allow during regional anesthesia procedures?
Real-time visualization of internal anatomy.

Quiz questions

  1. What does local anesthesia mean in the strict sense?Answer: Anesthesia of a small area, such as a tooth or patch of skin.
  2. What does the term conduction anesthesia encompass?Answer: Many local and regional anesthetic techniques.
  3. What are the two common chemical classes of clinical local anesthetics?Answer: Aminoamides and aminoesters.
  4. What is a general feature of local anesthesia during a procedure?Answer: It can reduce sensation while the patient remains conscious.
  5. In what year did August Bier perform the first spinal anesthesia?Answer: 1898

Based on the Wikipedia article Local anesthesia, licensed CC BY-SA 4.0. Adapted into a summary, flashcards and quizzes.

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