None listed
Conditions
Interventions
Sponsors
Eligibility
Inclusion criteria
Inclusion criteria: - Patients aged 20-55 undergoing general anesthesia - American Society of Anesthesiologist(ASA) physical status classification I, II
Exclusion criteria
Exclusion criteria: - If the patient does not agree with the study - If the patient has hypertension or diabetes mellitus - If the patient has eye diseases such as Horner syndrome and Sjogren's syndrome - If the patient takes medicine that can affect autonomic nerve and central nerve systems (i.e., anticholinergicss, beta blockers/agonists, alpha adrenergics, anti-depressants, anti anxiety agents, sleeping pills, opioids) - If the patient has chronic pain
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Pupillary reflex dilation before and after standardized noxious stimulus | — |
Secondary
| Measure | Time frame |
|---|---|
| Change of blood pressure, heart rate, and BIS (bispectral index) before and after standardized noxious stimulus | — |
Countries
Korea, Republic of
Contacts
Hanyang University Seoul Hospital