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Related Experiment Videos

[Is local anesthesia necessary for spinal needle insertion?].

Y Kobayashi1, Y Kamada, T Ichimiya

  • 1Department of Anesthesia, Asahikawa City Hospital.

Masui. the Japanese Journal of Anesthesiology
|October 8, 1999
PubMed
Summary
This summary is machine-generated.

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Local anesthesia (LA) before spinal block may not be necessary. While LA can reduce spinal needle insertion (SNI) pain, the total pain experienced is often greater than without LA, especially with larger volumes.

Area of Science:

  • Anesthesiology
  • Pain Management
  • Neurosurgery

Background:

  • Local anesthesia (LA) is commonly used before spinal needle insertion (SNI) for spinal blocks.
  • However, the injection of LA itself can cause pain, questioning its overall benefit.
  • This study investigates the necessity and efficacy of LA in reducing pain during SNI.

Purpose of the Study:

  • To evaluate the necessity of local anesthesia (LA) before spinal block.
  • To determine if LA makes spinal needle insertion (SNI) painless and easy.
  • To compare pain levels and procedural time with and without LA.

Main Methods:

  • Sixty patients undergoing spinal block were divided into three groups.
  • Group A received 2 ml of 1% lidocaine (24-gauge needle); Group B received 0.5 ml (27-gauge needle); Group C received no LA.

Related Experiment Videos

  • Pain was assessed using visual analog scales for both LA injection and SNI.

    • Main Results:

    • Total pain scores were significantly higher in groups receiving LA (A and B) compared to the no-LA group (C).
    • Group B experienced less pain from LA injection than Group A, but SNI pain was similar across all groups.
    • No significant difference in the time required for SNI was observed among the three groups.

    Conclusions:

    • Routine use of 2 ml of 1% lidocaine via a 24-gauge needle for LA before SNI is not beneficial for pain relief.
    • If LA is deemed necessary, using a smaller volume (0.5 ml) with a finer needle (27-gauge) is preferable to minimize injection pain.
    • The overall pain associated with spinal block may be reduced by omitting LA, particularly when using a 25-gauge needle for SNI.