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Related Experiment Videos

Slow injection of local anaesthetic will decrease pain during dorsal penile nerve block

F Serour1, A Mandelberg, J Mori

  • 1Division of Pediatric Surgery, Edith Wolfson Medical Center, Holon, Israel.

Acta Anaesthesiologica Scandinavica
|October 17, 1998
PubMed
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Performing a dorsal penile nerve block for circumcision with a very slow injection of local anesthetics significantly reduces patient pain compared to a faster injection. This finding highlights injection rate as a key factor in minimizing discomfort during the procedure.

Area of Science:

  • Anesthesiology
  • Pain Management
  • Urology

Background:

  • Circumcision is a common procedure often requiring local anesthesia.
  • Pain during local anesthetic injection can be a significant patient concern.
  • The dorsal penile nerve block is a standard technique for providing anesthesia during circumcision.

Purpose of the Study:

  • To determine if a very slow injection of local anesthetics during a dorsal penile nerve block for circumcision results in less pain compared to a rapid injection.
  • To investigate the impact of injection rate on pain perception during penile block.

Main Methods:

  • A prospective, double-blind, randomized study involving 75 patients (aged 15-53 years).
  • Patients were randomized into two groups: very slow injection (100-150 seconds) or faster injection (40-80 seconds).

Related Experiment Videos

  • A combination of lidocaine and bupivacaine was administered, and pain was assessed by a blinded physician using a standardized scale.

    • Main Results:

    • A statistically significant difference in pain scores was observed between the slow (median=1) and faster (median=2) injection groups (P = 0.0006).
    • A significant negative correlation (rs = -0.394, P < 0.0001) was found between pain score and the rate of local anesthetic infiltration.

    Conclusions:

    • The rate of injection is a critical factor in mitigating pain during penile block procedures.
    • Implementing a very slow injection technique can enhance patient comfort during dorsal penile nerve blocks for circumcision.