Cardiac Rhythms

Tim Phalen's 12 Lead ECG course video shows how to properly acquire pre-hospital 12 lead ECGs. Part One.

Part 2

Normal Sinus Rhythm

Junctional ectopic activity. Note that the premature complexes have no P wave and QRS is similar to the normal complexes.

Atrial ectopics beats. Note that the QRS of the premature contraction is similar to that of normal complexes.

Multifocal ventricular ectopics. Note the different shapes of QRS complexes.

Unifocal ventricular ectopic beats.

Complete cardiac standstill. Once confirmed, considered as cardiac arrest. The only stable cardiac rhythm

When a patient is receiving electrical stimulation from a pacemaker for cardiac activity, this is how it looks like

First degree atrioventricular block is characterized by PR prolongation.

A type 1 2nd degree AV Block, a relatively benign AV block, which does not usually progress to complete AV Block.

Second Degree AV Block Type II. This arrhythmia is a medical emergency as it can progess to complete AV block.

Third Degree Heart Block. Complete dissociation between atrial and ventricular electrical activity.

A deadly arrhythmia, commonest cause of death of myocardial infarction.

Ventricular tachycardia can be with pulse or pulseless. Pulseless VT is a type of cardiac arrest.

Idioventricular Rhythm. Another arrhythmia, seen often in post myocardial infarction scenario.

Junctional Rhythm. A cardiac arrhythmia seen often in coronary care units.

PSVT. A common arrhythmia presenting with palpitation in young individuals.

Atrial fibrillation is one of the most commonly encountered cardiac arrhythmias.

Atrial flutter is a common arrhythmia

More EKG Placement Information

AV Blocks

The Hearts Conduction System

Basic Heart A&P