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The efficacy of ondansetron as an adjunct to lidocaine compared with lidocaine pretreatment in reducing pain on propofol injection: A randomized controlled trial

The efficacy of ondansetron as an adjunct to lidocaine compared with lidocaine pretreatment in reducing pain on propofol injection: A randomized controlled trial.

Status
Recruiting
Phases
Unknown
Study type
Interventional
Source
ANZCTR
Registry ID
ACTRN12624000248561
Enrollment
50
Registered
2024-03-13
Start date
2023-08-03
Completion date
2024-07-31
Last updated
2024-04-15

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

Conditions

None listed

Brief summary

Ondansetron was proved to decrease pain on propofol injection. Lidocaine also has a role on pain on propofol injection. This study is aimed to determine efficacy of ondansetron as an adjunct to lidocaine in pain on propofol injection compared with lidocaine alone.

Interventions

20mg lidocaine (2% preservative-free) with 4mg ondansetron was prepared and was administered intravenously at the 3-way stop cock in 5 seconds by the nurse then the 3-way stop cock was locked for 15 seconds before 50 mg of propofol was administered in 5 seconds by the anesthesiologist.

Sponsors

King Chulalongkorn Memorial Hospital
Lead SponsorHospital

Study design

Allocation
Randomised controlled trial
Intervention model
Parallel
Primary purpose
Treatment
Masking
Blinded (masking used) (Subject, Caregiver, Outcomes Assessor)

Eligibility

Sex/Gender
All
Age
18 Years to 60 Years
Healthy volunteers
No

Inclusion criteria

-ASA classification I-II -scheduled for elective surgery with general anesthesia -Age 18- 60 years old -Weight more than 50 kg. -cooperate and able to communicate

Exclusion criteria

-patient's refusal -did not use propofol as induction agent -IV catheter 20G can't be accessed -local infection at IV site -Allergic to ondansetron or lidocaine -History of cardiac arrhythmia -unable to assess the pain score -chronic pain or receive analgesic 24 hours before surgery -RSI technique was used

Outcome results

None listed

Source: ANZCTR · Data processed: Feb 4, 2026