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**Excellent resource for ECG Criteria and Board Review!**

ECGsource (from the developers of the CathSource and EchoSource Apps) is a supplemental application to, the largest online educational resource for electrocardiograms. ECGsource has been developed for medical education and board review, and assists institutions in documenting trainee competency in electrocardiogram (ECG) interpretation.

ECGsource for the iPhone/iPad provides the following resources:
-> Full-List of Searchable ECG Diagnoses and Criteria
-> Over 65 High-Resolution Sample ECG Images
-> ECG Quiz (5-question demo of website's full content)
-> ECG Video Tutorials for Beginners (over 50 minutes of tutorial videos)

**ECG Criteria is an easily searchable rapid reference for more than 90 of the most common ECG diagnoses, including: Normal ECG, Incorrect Electrode Placement, Artifact, Atrial Enlargement, Sinus Rhythm, Sinus Arrhythmia, Bradycardia, Tachycardia, Sinus Arrest, Sinoatrial Exit Block, Atrial Premature Complexes, Atrial Tachycardia, Multifocal Atrial Tachycardia, Supraventricular Tachycardia, Atrial Flutter, Atrial Fibrillation, AV Junctional Rhythm/Tachycardia, Ventricular Premature Complexes, Ventricular Tachycardia, Accelerated Idioventricular Rhythm, Ventricular Fibrillation, AV Block, (1st Degree, 2nd Degree, and 3rd Degree), Wolff-Parkinson-White, AV Dissociation, Low Voltage, Axis Deviation, Electrical Alternans, Ventricular Hypertrophy, Complete and Incomplete Right Bundle Branch Block, Left Anterior Fascicular Block, Left Posterior Fascicular Block, Complete and Incomplete Left Bundle Branch Block, Non-specific Intraventricular Conduction Disturbance, Functional (Rate-Related) Aberrancy, Anterolateral Infarction (Age Recent or Probably Acute), Anterolateral Infarction (Age Indeterminate or Probably Old), Anterior or Anteroseptal Infarction (Age Recent or Probably Acute), Anterior or Anteroseptal Infarction (Age Indeterminate or Probably Old), Lateral Infarction (Age Recent or Probably Acute), Lateral Infarction (Age Indeterminate or Probably Old), Inferior Infarction (Age Recent or Probably Acute), Inferior Infarction (Age Indeterminate or Probably Old), Posterior Infarction (Age Recent or Probably Acute), Posterior Infarction (Age Indeterminate or Probably Old), Early Repolarization, Juvenile T Waves, Nonspecific ST and/or T Wave Abnormalities, ST and/or T Wave Abnormalities Suggesting Myocardial Ischemia, ST and/or T Wave Abnormalities Suggesting Myocardial Injury, ST and/or T Wave Abnormalities Suggesting Electrolyte Disturbances, ST and/or T wave Abnormalities Secondary to Hypertrophy, Prolonged Q-T Interval, Prominent U Waves, Digitalis Effect, Hyperkalemia, Hypokalemia, Hypercalcemia, Hypocalcemia, Secundum Atrial Septal Defect, Primum Atrial Septal Defect, Dextrocardia, Chronic Lung Disease, Acute Cor Pulmonale Including Pulmonary Embolism, Pericardial Effusion, Acute Pericarditis, Hypertrophic Cardiomyopathy, Central Nervous System Disorder, Myxedema, Hypothermia, Sick Sinus Syndrome, Brugada Syndrome, Ebstein's Anomaly, Atrial or Coronary Sinus Pacing, Ventricular Demand Pacemaker (VVI), Dual Chamber Pacemaker (DDD), and Pacemaker Malfunction.**

**ECG Video Tutorial section includes over 50 minutes of video tutorials designed to assist beginners learning electrocardiogram interpretation. Tutorial topics include Understanding the Cardiac Conduction System, Understanding the Limb and Precordial Leads, Determining ECG Rate and Axis, Left Ventricular Hypertrophy, Bundle Branch Blocks, and ST-Segment Elevation.**

Visit us online at for more information.
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User Rating

2.71 out of 5

7 ratings in United States

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Ratings History


Don’t buy!

angry burd 987654321 on

I bought this with the assumption that it was an on-the-go companion to the website. No! It is geared toward new learners and is not helpful for cardiology boards.

Don’t download

Vaj Badge McFlurry on

The bank of ECGs from the website IS NOT AVAILABLE on the app. All the app has are examples of each ECG criterion. You can’t actually work any ECGs. I should have known something was fishy when I have already payed for a subscription to the website and had to pay again to download the app.

Great resource!!

Amarillocard on

Best app I ever bought!! I have used many pocket references and none has been as user friendly and precise yet so easily accessible!! Great work!


Mmbeiruti on

I already purchased this app in my iPad, why I should pay again to download it for my iPhone?!

Awesome 12 lead app!

A&P Student 2010 on

This is of the best 12 lead ekg apps, if not the best, out there. It has a very useful library of actual patient ekgs including brief h&p's. If you're only going to buy on 12 lead app, this is the one for you.


BenN05231983 on

I am an experienced paramedic and ALS instructor. I picked up this program hoping to expand my library of ekg strips for when i teach as some are difficult to come by even on a generator. However i find the ecg notes are pretty good. Ut the actual ecg strips are unimpressive and not very typical in appearance for what they are meant to describe. The creator of the program fails to realize that just because a strip meets the technical diagnosis doesn't mean it is good example to show everyone else. Therefore i am disappointed but thankful it didn't cost much.

Don't buy for quiz

david martin on

Waste of money. Quiz only contains 5 ECGs. Good information but nothing I need in an app.

Favorite ECG app

charesepel on

Recommend highly. Also recommend "cath source" for anybody involved in cath lab.

useful ecg notes

canhcung1983 on

good app.but no image about ventricular parasystole. why ?a little sad

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App Info

ECGsource LLC
Recent version
3.4 (6 years ago )
Released on
Jun 19, 2010 (13 years ago )
Last updated
2 days ago