Ventricular Rhythms - Ventricular Rhythms
Introduction Part 1
- Rhythms are often named according to the origin of the electrical activity in the heart or the structure where the problem is occurring.
- Ventricular Rhythms are aptly named due to the locus of stimulation being the ventricles (Purkinje network).
- Dysrhythmias in this category occur as a result of either a failure of the higher (faster) pacemakers within the heart or an abnormal locus of stimulation within the ventricles is occurring at a faster rate than the other pacemaker sites and thus takes over as the pacemaker of the heart.
- Remember, the fastest electricity in the heart (regardless of location) will dictate the heart rate.
Introduction Part 2
- Each rhythm in this category will share unique morphologic features which separate them from other rhythms.
- Other than Asystole and Ventricular Fibrillation which are unique even within this category, the remaining ventricular rhythms typically present without P waves and will display a wide, bizarre QRS complex (measuring 0.12 seconds or greater).
- After learning the unique features just described, it is simply a matter of recalling the heart rate range associated with the dysrhythmia.
Chart of Types
Ventricular Rhythms(no P wave, wide - bizarre QRS if present)
|Agonal||less than 20 bpm|
|Accelerated Idioventricular||40-100 bpm|
|*Ventricular Tachycardia||> 100 bpm|
|*Ventricular Fibrillation||Electrical Chaos|
Authors and Sources
Authors and Reviewers
- EKG heart rhythm modules: Thomas O'Brien.
- EKG monitor simulation developer: Steve Collmann
12 Lead Course: Dr. Michael Mazzini, MD.
- Spanish language EKG: Breena R. Taira, MD, MPH
- Medical review: Dr. Jonathan Keroes, MD
- Medical review: Dr. Pedro Azevedo, MD, Cardiology
- Last Update: 11/8/2021
Electrocardiography for Healthcare Professionals, 5th Edition
Kathryn Booth and Thomas O'Brien
ISBN10: 1260064778, ISBN13: 9781260064773
McGraw Hill, 2019
Rapid Interpretation of EKG's, Sixth Edition
Cover Publishing Company
12 Lead EKG for Nurses: Simple Steps to Interpret Rhythms, Arrhythmias, Blocks, Hypertrophy, Infarcts, & Cardiac Drugs
Create Space Independent Publishing
Heart Sounds and Murmurs: A Practical Guide with Audio CD-ROM 3rd Edition
Elsevier-Health Sciences Division
Barbara A. Erickson, PhD, RN, CCRN
The Virtual Cardiac Patient: A Multimedia Guide to Heart Sounds, Murmurs, EKG
Jonathan Keroes, David Lieberman
Publisher: Lippincott Williams & Wilkin)
ISBN-10: 0781784425; ISBN-13: 978-0781784429
- Project Semilla, UCLA Emergency Medicine, EKG Training Breena R. Taira, MD, MPH