Navigation Links
Evidence that stun guns may stimulate the heart
Date:5/2/2008

On the eve of the British Columbia inquiry into the death of Robert Dziekanski, a review of scientific data in CMAJ (Canadian Medical Association Journal) finds that in some cases, stun guns may stimulate the heart in experimental models. This evidence is contrary to current views that stun guns only affect skeletal muscles.

The frequency and the shape of the pulses generated by stun guns are designed to incapacitate the target by electrically overwhelming his or her control of these muscles, state Dr. K. Nanthakumar and colleagues. In principle, these pulses are designed to act only on skeletal muscles and to not affect internal organs such as the heart. The evidence that stun guns do not stimulate the heart is based on theoretical studies [that] suggest that stun guns cannot deliver the amount of energy required to stimulate the heart or cause ventricular fibrillation.

Dr. Nanthakumar and collegues point out that most theoretical and some experimental studies reveal that cardiac stimulation does not occur with stun gun discharges. However, experimental studies on pigs by 3 independent groups of investigators found that a stun gun discharge can stimulate the heart depending on the location of the stun gun barbs. Barbs that are located such that they form a vector across the heart have greater effect than those focused on the abdomen. In one study, swine blood pressure was abruptly lost after discharge of a stun gun, and another study reported the deaths of 2 animals caused by ventricular fibrillation immediately after the stun gun discharge.This suggests that sufficient current density was produced by the stun gun to stimulate the heart, which according to theory should not and could not occur.

The researchers caution against applying data from pigs to humans, although most of the basic mechanistic concepts in cardiac fibrillation and defibrillation are derived from animal studies, not humans.

Recently, there have been several deaths after the use of stun guns, including Robert Dziekanski in Richmond, British Columbia, a Montral, Quebec man and 24 year-old Chicago, Illionois resident, Kevin Piskura. More than 300 deaths following stun gun use have been documented, 20 of them in Canada.

Regarding arrhythmias long after the discharge of the stun gun, Dr. Nanthakumar, Dr. Paul Dorian and colleagues conclude there is no conclusive evidence to show whether stun gun stimulation (under certain electrophysical conditions) can result in cardiac arrhythmias late after stun gun discharge. With regards to deleterious effects on the heart during the discharge they state In our view, it is inappropriate to conclude that stun gun discharges cannot lead to adverse cardiac consequences in all real world settings.


'/>"/>

Contact: Julie Saccone
416-864-5047
Canadian Medical Association Journal
Source:Eurekalert

Related medicine news :

1. Promising early evidence of the superior benefits of drug therapy for diabetic eye disease
2. Experts Agree There is No Scientific Evidence of Health Risks in New Jersey Synthetic Turf Fields
3. USC study finds evidence of gender-related differences in development of colon cancer
4. Center for Connected Health Presents Growing Evidence of the Benefits of Technology to Improve Patient Satisfaction and Empowerment
5. U of M Study Provides First Scientific Evidence That the Freedom to Breathe Act is Creating Healthier Workplaces for Hospitality Employees
6. NYU dental researchers find evidence of periodontal disease leading to gestational diabetes
7. ADVANCE diabetes trial results confirm no evidence of safety risk
8. Implementers, Advocates, Researchers Call on Congress to Honor Lantos Commitment to Public Health and Human Rights by Placing Evidence over Ideology
9. Phoenix Academys Therapeutic Community Model Is First to be Federally Recognized as Evidence-Based
10. University of Sydney researchers find new evidence linking kava to liver damage
11. More Evidence of Danger From Heart Surgery Drug
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:6/20/2017)... ... June 20, 2017 , ... ... has published a new eBook titled “ 5 Questions to Ask Before Entering ... Analyst on the Genetic Test Evaluation (GTE) team, the book explores the various ...
(Date:6/20/2017)... ... June 20, 2017 , ... HOUSTON – Brazos ... and a host of new options for today’s modern senior. Brazos Towers at ... active, independent lifestyle they love while offering them the services to support that lifestyle ...
(Date:6/20/2017)... ... June 20, 2017 , ... ... in Cincinnati, OH for leading-edge care, whether or not they have a ... Using the BIOLASE WaterLase® iPlus™ laser, she targets bacteria and damaged tissue without ...
(Date:6/20/2017)... MA (PRWEB) , ... June 20, 2017 , ... ... (IPI) Clinical Innovation Catalyst program focused on finding product improvements that ... tubes placed in their throats when they need help breathing or to provide ...
(Date:6/20/2017)... (PRWEB) , ... June 20, 2017 , ... ... the security systems industry has been selected as the partner of choice by ... a passenger railroad service that provides medium- and long-distance intercity service in the ...
Breaking Medicine News(10 mins):
(Date:6/19/2017)... Pa. , June 19, 2017  Researchers from ... today that they will host a live, complimentary webinar ... from the benchtop to the real world" on Wednesday ... EDT. This webinar will feature interviews ... rare look into the manipulation techniques abusers use to ...
(Date:6/14/2017)...  ivWatch LLC, a medical device company focused on ... is pleased to announce it was the Bronze Winner ... and Equipment at the 2017 Medical Design Excellence Awards ... The award was presented by Medical Device and Diagnostics ... New York during MD&M East, ...
(Date:6/13/2017)... WARSAW, Ind. , June 13, 2017 Zimmer ... in musculoskeletal healthcare, today announced that the U.S. Food and ... Letter dated June 3, 2015 relating to its ... "The successful clearance of ... China manufacturing facility is a measure of the ...
Breaking Medicine Technology: