Sinus tachycardia is recognized on an ECG with a normal upright P wave in lead II preceding every QRS complex. This indicates that the pacemaker is coming from the sinus node and not elsewhere in the ...

This 81 year old woman presents to her GP with blackouts lasting a few seconds. What does her ECG show? A Sinus rhythm with Mobitz I second degree (Wenckebach) AV block The ECG shows consistent p ...

There are clearly extra QRS complexes that are of different morphology compared to the QRS complexes with preceding p waves, ie, the sinus beats. The extra QRS complexes are broader and bigger ...

Learning the art of ECG interpretation requires intellect, commitment, effort and — perhaps most importantly — an organized approach. I have spent thousands of hours (yes, thousands) looking at ...

ECG Challenge: Could It Be Another Heart Attack? A man calls 911 with sudden palpitations and lightheadedness. What does an ECG reveal about the cause?

Lead-I electrocardiogram (ECG) devices can be used in primary care to help detect atrial fibrillation in people presenting with signs or symptoms of the condition, who have an irregular pulse on ...