Normal 12-Lead ECG
This ECG is nearly completely normal. We say "nearly" because there are VERY subtle changes which may or may not be chronic. ...
Wide-complex Tachycardia: Ventricular Tachycardia
This ECG is from a man who was experiencing palpitations and light-headedness with near-syncope. On first look, you will see a...
Wide Complex Bradycardia in Digitalis Toxic Patient
This ECG is from a female patient who presented with weakness. Her labs revealed digitalis toxicity and hyperkalemia. Actual lab values...
Deep, Symmetrical T Wave Inversions
This ECG is from a 50-year-old man with chest pain. Unfortunately, we don’t have any other clinical information. This tracing is a...
Atrial Flutter
This nice example of atrial flutter offers many teaching opportunities. "Sawtooth" flutter waves are readily visible in Leads II, III,...
Wolff-Parkinson-White Syndrome
Here is a good example of an ECG showing the signs of Wolff-Parkinson-White syndrome during normal sinus rhythm. WPW is one of the...
Left Main Coronary Artery Obstruction
Today’s ECG of the WEEK comes from Sebastian Garay, Paramedic. He presented it on his excellent website CardioCareConcepts.com, and was...
AV Block With Changing PR Intervals
Just like other subjects we are taught in school, ECG interpretation is usually taught in a very basic, simplistic way. As we add to our...
The Basics of ECG Interpretation (Part 3 – Waves, Segments & Intervals)
Waves As the ECG trace is recorded there are a series of upwards and downwards deflections created that represent atrial and ventricular...
Acute Anterior-lateral M.I. With Right Bundle Branch Block and Left Posterior Fascicular Block
This ECG was obtained from a patient who suffered an occlusion of the left main coronary artery. ST elevation is seen in Leads V1...
