Unilateral mydriasis during general anesthesia

Area of Science:

• Dentistry
• Anesthesiology
• Ophthalmology

Background:

• Impacted third molar extraction is a common dental surgical procedure.
• General anesthesia is frequently used for extensive dental surgeries like third molar extraction.
• Local anesthetics are routinely administered during oral surgery to manage pain.

Observation:

• A 24-year-old woman undergoing third molar extraction under general anesthesia received a local anesthetic.
• The local anesthetic administration resulted in mydriasis (pupil dilation).
• This mydriasis was initially misidentified as a potential central nervous system deficit.

Findings:

• Mydriasis occurred as a direct physiological response to the local anesthetic agent.
• The observed mydriasis was not indicative of a complication from the general anesthetic.
• The event underscores the importance of recognizing localized drug effects.

Implications:

• Clinicians should be aware of potential localized autonomic effects of local anesthetics, such as mydriasis.
• Differential diagnosis in the operating room should consider common drug side effects.
• This case emphasizes the need for accurate interpretation of pupillary changes during anesthesia.