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Warm lidocaine/tetracaine patch versus placebo before pediatric intravenous cannulation: a randomized controlled
Adam J Singer1, Breena R Taira, Ernest N Chisena
1Department of Emergency Medicine, Stony Brook University, Stony Brook, NY 11794-8350, USA. adam.singer@stonybrook.edu
Insights
Topical lidocaine/tetracaine patches modestly reduced pain during intravenous cannulation in pediatric emergency department patients. The treatment did not affect the success rate of IV insertions.
Area of Science:
- Pediatric Emergency Medicine
- Pain Management
- Anesthesiology
Background:
- Intravenous (IV) cannulation is a common and often painful procedure for pediatric patients in emergency departments (EDs).
- Effective pain management is crucial to improve patient experience and cooperation during medical procedures.
Purpose of the Study:
- To compare the efficacy of a topical lidocaine/tetracaine patch versus placebo in reducing the pain associated with IV cannulation in pediatric ED patients.
- To test the hypothesis that the active patch would reduce pain by at least 15 mm on a visual analogue scale.
Main Methods:
- A randomized, double-blind, placebo-controlled trial was conducted in a suburban academic ED.
- Eligible patients (3-17 years) received either a topical lidocaine/tetracaine patch or a placebo patch before anticipated IV cannulation.
- Pain was measured using a visual analogue scale or Wong Baker scale post-cannulation.
Main Results:
- A total of 45 patients were randomized; 40 underwent IV cannulation. The median pain score was significantly lower in the lidocaine/tetracaine group (18 mm) compared to the placebo group (35 mm; P=.04).
- Adequate pain relief was reported by 75% of patients in the active treatment group versus 35% in the placebo group.
- The success rate of IV cannulation on the first attempt was similar between the groups (90% vs. 85%).
Conclusions:
- Topical lidocaine/tetracaine patches provide a modest reduction in IV cannulation pain for pediatric ED patients.
- The application of these patches did not negatively impact the success rate of IV cannulations.
Study Objective:
We compare the pain of intravenous (IV) cannulation in pediatric emergency department (ED) patients after applying a topical lidocaine/tetracaine patch versus placebo. We hypothesized that application of the active patch would reduce the pain of IV cannulation by at least 15 mm.
Methods:
We conducted a randomized, double-blind, placebo-controlled trial in a suburban academic ED. Patients aged 3 to 17 years who required nonemergency IV cannulation were eligible for enrollment. At triage, a nurse placed a commercially available topical lidocaine/tetracaine patch or an identical-looking placebo patch over the antecubital or hand vein in patients for whom an IV catheter was anticipated. After IV cannulation by the treating nurse, the pain of cannulation was measured on a validated 100-mm visual analogue scale or Wong Baker scale. Outcomes were compared between groups with Mann-Whitney U, Student t, and chi(2) tests. A sample of 40 patients had 80% power to detect a 13-mm difference in pain scores.
Results:
Forty-five patients were randomized to lidocaine/tetracaine patch (22) or placebo (23), and IV cannulation was attempted in 40 of these patients. Mean age was 10 years (SD=4.3), 35% were female patients. The median pain of IV cannulation in the active treatment group (18 mm [interquartile range (IQR) 1 to 40 mm]) was significantly lower than in the placebo group (35 mm [IQR 20 to 59 mm]; P=.04). Adequate pain relief was more common in the active treatment group (75% [95% confidence interval (CI) 53% to 89%] versus 35% [95% CI 18% to 57%]; difference 40% [95% CI 6% to 64%]). The number of successful IV cannulations after the first attempt was similar in both the lidocaine/tetracaine and the placebo groups (90% [95% CI 70% to 97%] versus 85% [95% CI 64% to 95%]; difference 5% (95% CI -21% to 30%).
Conclusion:
Application of a topical lidocaine/tetracaine patch resulted in a modest reduction in the pain of IV cannulation in pediatric ED patients and did not alter the rate of successful cannulations.
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