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Am J Emerg Med. 2008 Jan;26(1):1-4.

Twelve-lead electrocardiogram monitoring of subjects before and after voluntary exposure to the Taser X26.

Author information

1
Department of Emergency Medicine, University of California, San Diego Medical Center, San Diego, CA 92103, USA. gmvilke@ucsd.edu

Abstract

OBJECTIVES:

The Taser (Taser International, Scottsdale, Ariz) uses high-voltage electricity to incapacitate subjects. We sought to evaluate cardiac rhythm changes during deployment of the Taser on healthy volunteers.

METHODS:

This prospective study was performed on 32 healthy volunteer subjects receiving a Taser X26 discharge. The subjects had baseline 12-lead electrocardiogram (ECG) monitoring performed immediately before and within 1 minute after the Taser discharge. Changes in cardiac rhythm, morphology, and interval duration were evaluated. Descriptive statistics and paired-sample t test comparisons are reported.

RESULTS:

All 32 subjects had an interpretable 12-lead ECG obtained before and after the Taser activation, although 1 subject's post-PR interval could not be determined. The mean age and body mass index were 33 years and 26.5 kg/m2, respectively. Overall, there was a significant increase in heart rate (2.4; 95% confidence interval [CI], 0.0-4.9) and a decrease in PR interval (-6.5; 95% CI, -9.7 to -3.3). When stratified by sex, only the PR interval in men significantly decreased (-5.9; 95% CI, -9.2 to -2.5). There were significant changes in heart rate (4.0; 95% CI, 1.3-6.7), PR interval (-6.0; 95% CI, -11.3 to -0.7), and QT interval (-18.8; 95% CI, -33.2 to -4.3) among those with a normal body mass index, and in PR interval among those who were overweight/obese (-6.7; 95% CI, -10.8 to -2.5). None of the statistically significant differences between ECG measures were clinically relevant.

CONCLUSIONS:

There were no cardiac dysrhythmia and interval or morphology changes in subjects who received a Taser discharge based on a 12-lead ECG performed immediately before and within 1 minute after a Taser activation.

PMID:
18082773
DOI:
10.1016/j.ajem.2007.01.005
[Indexed for MEDLINE]
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