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Audiometric changes following spinal anaesthesia

S Haleem1, M M Ansari, A Shakoor

  • 1Department of Anaesthesiology, Jawaharlal Nehru Medical College, Aligarh Muslim University, India.

JPMA. the Journal of the Pakistan Medical Association
|March 1, 1993
PubMed
Summary
This summary is machine-generated.

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Spinal anesthesia with larger gauge needles (20-22) can cause temporary hearing changes. Smaller gauge needles (24-25) showed no significant impact on audiometric values post-procedure.

Area of Science:

  • Anesthesiology
  • Audiology
  • Neurosurgery

Background:

  • Spinal anesthesia is a common procedure.
  • Potential side effects include neurological and sensory changes.
  • The impact of spinal needle gauge on hearing is not well-established.

Purpose of the Study:

  • To investigate audiometric changes after spinal anesthesia using different spinal needle gauges.
  • To determine if needle gauge influences the incidence or severity of hearing alterations.

Main Methods:

  • A prospective study involving 125 patients undergoing spinal anesthesia.
  • Patients were randomized into five groups (20, 22, 23, 24, and 25 gauge needles).
  • Audiometric values were assessed on the first and fifth postoperative days.

Related Experiment Videos

Main Results:

  • Significant decreases in audiometric values (250-500 Hz) were observed on postoperative day 1 with 20-gauge (12%) and 22-gauge (8%) needles (P < 0.001).
  • A statistically significant decrease (8%) was noted with 23-gauge needles (P < 0.05).
  • No significant audiometric changes occurred with 24-gauge and 25-gauge needles.

Conclusions:

  • Larger gauge spinal needles (20-22) are associated with temporary, significant audiometric changes.
  • Smaller gauge needles (24-25) appear safer regarding hearing function post-spinal anesthesia.
  • These findings suggest needle selection may mitigate auditory side effects.