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Subcutaneous cysts: another cause of "failed" spinal anesthesia?
D Kelly1, J A Gudin, S J Brull
1Department of Anesthesiology, Yale University School of Medicine, New Haven, CT 06520-8051, USA.
Journal of Clinical Anesthesia
|November 1, 1996
Summary
A subcutaneous cyst can mimic spinal fluid, leading to spinal anesthesia failure. Microscopic analysis confirmed cyst fluid, highlighting this rare complication for anesthesiologists.
Area of Science:
- Anesthesiology
- Neurosurgery
Background:
- Spinal anesthesia is a common technique for surgical procedures.
- Failure of spinal anesthesia can occur due to various factors.
Observation:
- A case is presented where a spinal needle entered a subcutaneous cyst.
- The fluid obtained from the needle initially appeared to be cerebrospinal fluid.
Findings:
- Microscopic examination revealed the fluid was consistent with subcutaneous cyst contents.
- This misdiagnosis led to inadequate spinal anesthesia.
Implications:
- Subcutaneous cysts are an unusual cause of spinal anesthesia failure.
- Anesthesiologists should consider superficial cyst fluid as a potential cause of apparent dural puncture, especially with clear fluid return at shallow depths.