Effects of intravenous ephedrine in preventing intraoperative hypothermia in patients undergoing spinal anesthesia for arthroscopic knee surgery

Status

Recruiting

Phases

Unknown

Study type

Interventional

Source

TCTR

Registry ID

TCTR20161017007

Enrollment

Registered

2016-10-17

Start date

2016-09-01

Completion date

Unknown

Last updated

2026-08-03

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Core temperature Blood pressure Shivering Core temperature Shivering

Interventions

NSS 3 ml intravenous,9 mg of ephedrine (3 ml)

Placebo Comparator Drug,Experimental Drug

NSS,Ephedrine

Eligibility

Sex/Gender

All

Age

18 Years to 70 Years

Inclusion criteria

Inclusion criteria: 1) Patient undergoing knee or ankle arthroscopic surgery under spinal block at department of orthopaedic, Ramathibodi Hospital 2) BMI 17-30 kg/m2 3) ASA physical status 1-3 4) Age 18-70 5) Last oral intake > 6 hours ( 2 hours for water) 6) Consent form acquired

Exclusion criteria

Exclusion criteria: 1) Patient who are contraindicated for spinal block 2) Anesthesia level > T4 or 37.5 or 140/90 mmHg (repeat after rest 5 minutes) 7) Patient refusal

Design outcomes

Primary

Measure	Time frame
Core temperature 120 minutes Tympanic temperature	—

Secondary

Measure	Time frame
Incidence and onset of shivering 120 minutes Observation	—

Countries

Thailand

Contacts

Public ContactThanist Pravitharangul

Department of Anesthesiology, Ramathibodi Hospital

thnst_yu@msn.com+66866633694

Outcome results

None listed

Source: TCTR (via WHO ICTRP) · Data processed: Aug 9, 2026