The effect of desflurane on postoperative olfactory memory.

Area of Science:

• Anesthesiology
• Neuroscience

Background:

• Olfactory memory is crucial for quality of life.
• General anesthesia's impact on cognitive functions, including olfaction, requires further investigation.
• Desflurane is a common inhalational anesthetic agent.

Purpose of the Study:

• To investigate the effects of 6% desflurane general anesthesia on short-term olfactory memory.
• To evaluate olfactory memory function before and after surgical procedures under desflurane anesthesia.

Main Methods:

• Prospective clinical study involving 40 adult patients (ASA I-III).
• Olfactory memory assessed using the Brief Smell Identification Test (BSIT) preoperatively and postoperatively.
• Anesthesia maintained with 6% desflurane, alongside standard induction agents (fentanyl, propofol, rocuronium bromide).

Main Results:

• No statistically significant difference was observed in the olfactory memory scores before (92.7%) and after (92.1%) surgery.
• The p-value comparing pre- and postoperative BSIT results was greater than 0.05.
• Patient mean age was 41.1±12.0 years.

Conclusions:

• General anesthesia using 6% desflurane does not appear to affect short-term olfactory memory.
• This is the first study to report this finding in the literature.
• Further research with larger sample sizes is recommended to confirm these results.