Knee Injuries
Conditions
Brief summary
Loading dose of dexmedetomidine is related hemodynamic instability such as bradycardia and hypertension.
Detailed description
The investigators hypothesized substitution of loading of dexmedetomidine for midazolam could reduce hemodynamic instability during spinal anesthesia for knee arthroscopy.
Interventions
intravenous loading of dexmedetomidine for 1 mcg/kg
intravenous loading of midazolam for 0.1 mg/kg
Sponsors
Study design
Eligibility
Inclusion criteria
* patients who were planned to undergo knee arthroscopy under spinal anesthesia
Exclusion criteria
* age \< 20 years * underlying heart, liver or kidney disease * hypersensitivity to midazolam or dexmedetomidine
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| change of heart rate | from 1 minute before anesthesia to 1 hr after anesthesia |
Secondary
| Measure | Time frame |
|---|---|
| change of bispectral index | from 1 minute before anesthesia to 1 hr after anesthesia |
Countries
South Korea