From Dr. Wes:
"Danish physicist Henrik Svensmark was attending the Coppenhagen Climate Summit 2009 and had three repetitive ICD firings recorded on live television. Reportedly he was rushed to a hospital and his condition stabilized.
When the defibrillator fires, it delivers the equivalent of approximately 830 volts in a tenth of a second, causing the muscles of the chest, heart, vocal coards and diaphragm to contract forcefully, occassionally resulting in the "yelp" heard at the just before the video ends."
Lead II electrocardiogram showing torsades de pointes being shocked by an implantable cardioverter-defibrillator (ICD) back to the patient's baseline cardiac rhythm. Image source: Wikipedia, public domain.
Guidant ICD. Image source: Wikipedia, n28ive1 on Flickr, Creative Commons Attribution 2.0 License.
Live on TV: An Implantable Cardiac Defibrillator Fires. Dr. Wes.