Sinus Tachycardia ECG

ECG Strip

Sinus Tachycardia Rhythm Strip Features

Rate: Fast (> 100 bpm)
Rhythm: Regular
P Wave: Normal, may merge with T wave at very fast rates
PR Interval: Normal (0.12-0.20 sec)
QRS: Normal (0.06-0.10 sec)
Occurs when the rate of electrical impulse formation occurs at a rate exceeding 100 bpm.
Sinus tachycardia is a fast rhythm with sinoatrial node impulses greater than 100 beats per minute. Heart rate varies normally with age, with infants and young children having fast rates. Sinus tachycardia is a normal response during exercise and when under stress. Many other factors will cause sinus tachycardia including heart failure, COPD, fever and stimulants.
External Source: http://www.uptodate.com/contents/sinus-tachycardia
UpToDate

Return to ECG Reference Guide Index

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
Heart sounds and mentorship: W. Proctor Harvey, MD
Medical review: Dr. Pedro Azevedo, MD, Cardiology
Last Update: 1/8/2023

Sources

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
Dale Dublin
Cover Publishing Company
12 Lead EKG for Nurses: Simple Steps to Interpret Rhythms, Arrhythmias, Blocks, Hypertrophy, Infarcts, & Cardiac Drugs
Aaron Reed
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
Clinical Heart Disease W Proctor Harvey, MD
Clinical Heart Disease
Laennec Publishing; 1st edition (January 1, 2009)
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