ECG with a pacemaker.
This ECG is taken from an elderly man who has a history of complete heart block and AV sequential pacemaker. On the day of this ECG, he...
Intoxicación por nitratos y nitritos
CASO CLINICO Paciente de 15 años, con antecedentes de alergias ambientales a ácaros y a epitelio de perros, y antecedentes personales de...
Bundle Branch Blocks (Part 1 – Left and Right Bundle Branch Blocks)
A bundle branch block is a disorder in which there is an obstruction in the heart’s electrical conduction system. These can be broadly...
Supraventricular Tachycardia With Wenckebach Conduction
This ECG was obtained from a patient in a walk-in health clinic. We do not have any other information on the patient. We thank Joe...
Supraventricular Tachycardia in Pediatric Patient With Wolff-Parkinson-White Syndrome
This ECG was obtained from a 13-year-old boy who had previously been in NSR. At that time, he was diagnosed with Wolff-Parkinson-White...
ECG Basics: Third-degree AV Block, Complete Heart Block
This rhythm strip shows third-degree AV block, also called complete heart block or complete AV block. The P waves are from the sinus...
Atrial Fib To Cardiac Arrest
A paramedic crew responded to the office of a local physician. A 61-year-old male presented with a one-week history of chest pain and...
Understanding the Oxygen Dissociation Curve
What is the oxygen dissociation curve? The oxygen dissociation curve is a graph that plots the proportion of haemoglobin in its...
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...
