Definition of "tachyarrhythmia" [tachyarrhythmia]

• An excessively rapid heartbeat accompanied by arrhythmia. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "Given the PD2iR's ability to detect a patient's risk of tachyarrhythmia in time for a warning to be issued to the patient and/or caregiver, we are pleased to be able to utilize this technology in our resuscitation devices, many of which are not only therapeutic but also used to monitor patients prior to an acute event."
• "A total of three episodes of ventricular tachyarrhythmia were reported in the treated group as compared to 10 in the control group."
• "Dr. Wayne Ray, who testified before the FDA's Psychopharmacologic Dr.gs Advisory Committee, one study involving 93,300 users of antipsychotic drugs -- half of whom were on atypical antipsychotics -- showed that such users were at no less than double the risk of a "sudden, fatal, pulseless condition, or collapse … consistent with a ventricular tachyarrhythmia occurring in the absence of a known, non-cardiac cause.""