Basic ECG/Arrhythmia and Practice ECG Bundle

This chapter reviews the important, basic cardiac anatomy and physiology needed to read electrocardiograms and rhythm strips. This includes the cardiac chambers, valves, electrical system, and circulatory system.

This chapter reviews the cardiac muscle action potential.

This chapter reviews how the ECG machine sees electrical impulses and translates them into the waves seen on the ECG.

This chapter reviews how the cardiac impulse propagates through the heart. Impulses typically start in the sinoatrial (SA) node, go through the atria, the atrioventricular (AV) node, and into the ventricles.

This video shows you the ECG calibrations.

This chapter reviews electrical waveforms. Topics include P-waves, QRS complexes, and T-waves. It reviews Q-waves, R-waves, S-waves, R prime (R'), R double prime (R''), S prime (S'), and S double prime (S'').

This chapter reviews the intervals of the electrical waveforms. Topics include the PR interval, QRS interval, and QT interval.

This chapter reviews telemetry monitors and basic telemetry setups.

This chapter reviews how to properly name rhythms. It emphasizes that rhythms are named by their location of origin and something about the heart rate.

This chapter shows several ways to determine the heart rate on an ECG or telemetry strip.

This chapter reviews sinus rhythms (rhythms that originate from the sinoatrial (SA) node). These include normal sinus rhythm, sinus bradycardia, and sinus tachycardia.

This chapter reviews junctional rhythms (rhythms that originate from the atrioventricular (AV) node). These include idiopathic junctional rhythm, junctional bradycardia, accelerated junctional rhythm, and junctional tachycardia.

This chapter reviews ventricular rhythms (rhythms that originate from the ventricles). These include premature ventricular complexes (PVC), ventricular couplets, monomorphic ventricular tachycardia, polymorphic ventricular tachycardia, torsades de pointes (TdP), and ventricular fibrillation.

This chapter reviews atrial rhythms (rhythms that originate from the atria). These include premature atrial complexes (PAC), ectopic atrial rhythms, atrial bradycardia, atrial tachycardia, atrial flutter, atrial fibrillation, and multifocal atrial tachycardia.

This chapter reviews supraventricular tachycardia. specifically, it covers a fast rhythm that originates from the atrioventricular (AV) node.

This chapter reviews asystole (no heart rhythm) and agonal rhythms (slow variable ventricular rhythms of a dying heart).

This chapter reviews pacemaker rhythms (rhythms that originate from a pacemaker). These include ventricular pacemaker rhythms and atrioventricular pacemaker rhythms.

This video goes over possible artifacts seen on the ECG and rhythm strips.

This lesson goes over atrioventricular (AV) blocks. It covers first-degree AV blocks, second-degree AV blocks (Mobitz 1 [Wenckebach] and Mobitz 2), third-degree (complete) AV blocks, and 2:1 AV blocks

This chapter briefly reviews which heart rhythms are serious and may need immediate medical attention, and which rhythms are overall benign.

This chapter reviews the basics of electrocardiography for understanding arrhythmias. Topics include calibrations, waveforms, intervals, basic conduction and the ECG layout.

This chapter reviews multiple methods for determining the heart rate on an ECG or rhythm strip.

This chapter reviews how to name heart rhythms including those that originate from the sinus node, the atrioventricular node (junction), the ventricles, and the atria. It also reviews how to name the ventricular rates in patients with atrial fibrillation.

This chapter reviews sinus rhythms and sinoatrial exit blocks. Topics covered include normal sinus rhythm; sinus bradycardia; sinus tachycardia; sinus arrhythmia; sinus pauses; sinus arrest; and sinoatrial exit blocks.

This chapter reviews the ECG criteria for atrial arrhythmias including premature atrial complexes (PACs/APCs); ectopic atrial rhythm; atrial bradycardia; atrial tachycardia; paroxysmal atrial tachycardia (PAT); multifocal atrial tachycardia (MAT); wandering atrial pacemaker; atrial flutter and atrial fibrillation.

This chapter reviews the ECG criteria for junctional rhythms. These include idiopathic junctional rhythms, junctional bradycardia, accelerated junctional rhythm, junctional tachycardia, and brief descriptions of reentrant junctional rhythms (atrioventricular nodal reentrant tachycardia [AVNRT]; atrioventricular reentrant tachycardia [AVRT]).

This chapter reviews the ECG changes associated with supraventricular tachycardia (SVT). It is divided into two parts. Part 1 gives brief definitions and descriptions of atrioventricular nodal reentrant tachycardia (AVNRT), and atrioventricular reentrant tachycardia (AVRT). Part 2 describes these in much more detail.

This chapter reviews the ECG criteria for ventricular arrhythmias including premature ventricular complexes (PVCs); fusion beats; idioventricular rhythms; accelerated idioventricular rhythms; ventricular tachycardia; ventricular flutter; ventricular fibrillation and torsades de pointes. Other topics include fusion beats, capture beats, interpolated PVCs, compensatory pauses, and non-compensatory pauses.

This chapter reviews criteria for telling the difference between ventricular beats and supraventricular beats with aberrancy. Each criterion is detailed and several ECGs are used as examples.

This chapter reviews the ECG criteria for atrioventricular (AV) blocks including first-degree AV block; second degree AV block, Mobitz 1; second degree AV block, Mobitz 2; third degree AV block; and 2:1 AV block.

This chapter reviews the ECG criteria for atrioventricular (AV) dissociation.

This chapter reviews ECG findings associated with pacemakers. It is divided into three parts. Part 1 discusses pacemaker nomenclature, normal pacemaker function, and identifying a pacemaker on an electrocardiogram. Part 2 reviews other pacemaker features and their associated ECG findings. This includes Fusion Beats; Pseudofusion Beats; Unipolar Pacing; Bipolar Pacing; Lower Rate Limit; Upper Rate Tracking Limit. Part 3 goes over ECG findings that suggest pacemaker malfunction.

Read this ECG yourself and then listen to the detailed explanation of the ECG findings.

Read this ECG yourself and then listen to the detailed explanation of the ECG findings.

Read this ECG yourself and then listen to the detailed explanation of the ECG findings.

Read this ECG yourself and then listen to the detailed explanation of the ECG findings.

Read this rhythm strip yourself and then listen to the detailed explanation of the findings.

On rhythm strips you only read the rhythm and the intervals. Do not try to do a full ECG interpretation as there is not enough data.

Read this ECG yourself and then listen to the detailed explanation of the ECG findings.

This is an ECG of a 28-year-old man in the Emergency Department with possible food poisoning. Read it yourself and then listen to the detailed explanation of the ECG findings.

Read this ECG yourself and then listen to the detailed explanation of the ECG findings.

This is an ECG of a 60-year-old woman. Read it yourself and then listen to the detailed explanation of the ECG findings.

Read this ECG yourself and then listen to the detailed explanation of the ECG findings.

Here is an interesting ECG. Read it yourself and then listen to the detailed explanation of the ECG findings. In the end, clinical patient information is shared.

Here are six rhythm strips from a 48-hour Holter monitor. These strips were from a 76-year-old man being assessed for tachycardia. Each rhythm strip has a unique finding. Read each one and then listen to the detailed explanation. Different reading methods are used to assess the strips.

Remember to click on "Mark Complete" at the bottom of this page when you completed the lesson

This ECG is from a 60-year-old man. Read it yourself and then listen to the detailed explanation of the ECG findings.

Read this ECG yourself and then listen to the detailed explanation of the ECG findings.

Read this ECG yourself and then listen to the detailed explanation of the ECG findings. In the end, clinical patient information is shared.

Read this ECG yourself and then listen to the detailed explanation of the ECG findings. In the end, clinical patient information is shared.

Read this ECG yourself and then listen to the detailed explanation of the ECG findings.

This ECG is from a 40-year-old woman. Read it yourself and then listen to the detailed explanation of the ECG findings.

Read this ECG yourself and then listen to the detailed explanation of the ECG findings.

Read this ECG yourself and then listen to the detailed explanation of the ECG findings.

Read this ECG yourself and then listen to the detailed explanation of the ECG findings.

Read this ECG yourself and then listen to the detailed explanation of the ECG findings.

Check out this ECG. There is a lot here. Be sure to follow the Executive Electrocardiogram Education ECG Reading Approach to be sure you do not miss anything. Pay close attention to the P-waves and the rhythm. Have fun and then listen to the detailed explanation of the ECG findings.

This ECG is from a 78-year-old man with substernal chest pressure. Read it yourself and then listen to the detailed explanation of the ECG findings.

This ECG is from a 53-year-old man who presented to the emergency room with palpitations. Read it yourself and then listen to the detailed explanation of the ECG findings.

This ECG is from a 77-year-old man who presented to the emergency room with a cough. Read it yourself and then listen to the detailed explanation of the ECG findings.

This ECG is from a 26-year-old woman with a history of palpitations and near-syncope. Pay close attention to the rhythm. Read it yourself and then listen to the detailed explanation of the ECG findings.

There was no clinical information at the time the ECG was received. Read it yourself and then listen to the detailed explanation of the ECG findings.

Read this ECG yourself and then listen to the detailed explanation of the ECG findings.

Read this ECG yourself and then listen to the detailed explanation of the ECG findings.

This ECG is from a 70-year old man. There is no clinical history. Read it yourself and then listen to the detailed explanation of the ECG findings.

Please read this ECG from an asymptomatic 69-year-old man, seen in the cardiology office for a routine check-up. When you are done listen to the detailed explanation of the ECG findings.

This ECG is from an 85-year old woman seen during a routine cardiology office visit. She is asymptomatic. Read it yourself and then listen to the detailed explanation of the ECG findings.

This ECG is from a 71-year old man who is asymptomatic. Read this ECG and then listen to the detailed explanation of the ECG findings.

This ECG is from a 77-year-old woman. Read it yourself and then listen to the detailed explanation of the ECG findings.

With this ECG, we will take a completely different approach to the interpretation. I want you to look at the diagnoses made by the computer, and see if you agree or disagree. You need to defend your positions. After making your decisions, listen to the detailed explanations. You may want to read the ECG from beginning to end, as usual, and make your final diagnoses. This ECG is from an asymptomatic 84-year-old woman seen in the office.

Read it yourself and then listen to the detailed explanation of the ECG findings.

This ECG is from a 89-year old man during a routine office visit. Read it yourself and then listen to the detailed explanation of the ECG findings.

This ECG is from a 70-year-old man seen in the office. Read it yourself and then listen to the detailed explanation of the ECG findings.

This ECG is from a 75-year-old woman seen in a cardiology office setting. Read it yourself and then listen to the detailed explanation of the ECG findings.