Trial reportJournal of anesthesia2023
Prevention of pain on injection of propofol using ice gel pack versus pre-treatment with lignocaine: a randomized controlled trial.
Trial report in Journal of anesthesia, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
3 citing papers in PubMed, 8 citations in OpenAlex.
- Skin cooling and topical application of menthol can reduce propofol injection-induced pain, a randomized trial.Medicine · 2025Trial
- Optimal lidocaine propofol mixture for painless induction of anesthesia.Saudi journal of anaesthesiaArticle
- Comparison of dexmedetomidine and cold thermotherapy for the relief of pain on propofol injection: A randomized controlled trial.Journal of anaesthesiology, clinical pharmacologyArticle
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
7 authors at 4 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
purposeRegardless of the positive attributes of propofol, it is frequently associated with pain on injection. We compared the efficacy of topical cold thermotherapy using an ice gel pack with intravenous lignocaine pre-treatment for reducing pain on propofol injection.
methodsThis single-blinded randomized controlled trial was conducted in 200 American Society of Anesthesiologists physical status I, II, and III patients scheduled for elective/emergency surgery under general anesthesia. The patients were randomized into two groups: the Thermotherapy group- receiving an ice gel pack proximal to the intravenous cannula for 1 min, or the Lignocaine group-receiving 0.5 mg/kg of lignocaine administered intravenously, with occlusion proximal to the site of the intravenous cannula for 30 s. The primary objective was to compare the overall incidence of pain after propofol injection. The secondary objectives included the incidence of discomfort on the application of an ice gel pack, comparison of dose of propofol needed for induction, and hemodynamic changes at induction, between the two groups.
resultsFourteen patients in the lignocaine group and 15 patients in the thermotherapy group reported pain. The incidence of pain and the distribution of pain scores were comparable among groups (p = 1.00). Patients of the lignocaine group required significantly less amount of propofol for induction as compared to the thermotherapy group (p = 0.001).
conclusionTopical thermotherapy using an ice gel pack was not found superior to lignocaine pre-treatment in alleviating pain on injection of propofol injection. However, topical cold therapy using an ice pack remains a non-pharmacological technique that is easily available, reproducible, and cost-effective. Further studies are required to prove its equivalence to lignocaine pre-treatment.
trial registrationCTRI (CTRI/2021/04/032950).
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