Objective: Precordial ECGs reveal significant intrasubject variability due to the inexact employment of the recommended V 1-V 6 chest landmarks. Also, as per the Einthoven law, the six limb leads can ...

What's the source of the unusual electrocardiogram (ECG) findings in a patient presenting with dizziness and limb weakness? That's the mystery posed in a recent case report. The diagnostic challenge ...

Not all atrial flutters demonstrate the typical "sawtooth" pattern. During the times of lesser conduction on this ECG, the flutter waves are more apparent. The atrial rate is organized at a rate of ...

The ECG findings of dextrocardia include a predominantly negative P wave (when sinus rhythm is present), negative QRS complex, and negative T wave in lead I. This results in a rightward QRS axis.

As the 12 leads of the same tracing show above, there is a typical rsR' pattern in V1, which is diagnostic of RBBB. In leads I and aVL of this tracing, the wide QRS complexes are made of a broad S ...

The Skeptical Cardiologist has been evaluating a demo version of AliveCor's new KardiaMobile 6L. I have been a huge advocate of Kardia's single-lead ECG and use it with great success in dozens of my ...