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[Transient global amnesia after general anesthesia]

H Kohase¹, F Yoshikawa, M Umino

¹Department of Dental Anesthesiology, Tokyo Medical and Dental University, School of Dentistry.

Masui. the Japanese Journal of Anesthesiology

|May 22, 1998

Summary

Transient global amnesia (TGA) occurred in a patient after mandibular cyst surgery. While long-term memory returned, recent memory remained lost, suggesting TGA as a potential complication.

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Area of Science:

Neurology
Anesthesiology
Oral and Maxillofacial Surgery

Background:

A 61-year-old male underwent marsupialization for a left mandibular cyst under general anesthesia.
The procedure involved surgical intervention within the mandibular region.

Observation:

Post-anesthesia, the patient exhibited impaired memory for the preceding four months and short-term memory plasticity.
No immediate neurological abnormalities were detected.
On postoperative day two, retrograde memory for the past four months was restored.

Findings:

A distinct period of amnesia persisted, encompassing events from six hours pre-operation to the morning after.
This memory deficit is hypothesized to be transient global amnesia (TGA).

Implications:

Transient global amnesia may be a potential complication following mandibular procedures under general anesthesia.
Possible contributing factors include transient hypertension, operative stress, postoperative pain, and diazepam administration.
Further research is warranted to elucidate the specific mechanisms and risk factors for TGA in this context.

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