Title NGOAI TAM THU - BSCK2 Le Hoai Nam DHYD - GUI HOC VIEN.pdf ✅

NGOẠI TÂM THU ĐẠI HỌC Y DƯỢC TP HỒ CHÍ MINH KHOA Y
 Definition: An irritable focus that spontaneously fires earlier than the normally expected beat  Override the SA node – Atrial premature beats – Junctional premature beats – Ventricular premature beats Premature Beats
© 2013 The McGraw-Hill Companies, Inc. All rights reserved. Fast & Easy ECGs, 2E Atrial Dysrhythmias • Originate in the atrial tissue or in the internodal pathways • Are among the most common types of dysrhythmias, particularly in persons older than 60 years of age Q I 3
Atrial Dysrhythmias  Key characteristics include: – P’ waves (if present) that differ in appearance from normal sinus P waves – Abnormal, shortened, or prolonged P’R intervals – QRS complexes that appear narrow and normal I 4