This means 1 mm in any two contiguous leads ... Now, here is an inferior STEMI with a RBBB on the ECG. Note the reciprocal depression in lead I and aVL. This must not be forgotten.

A 76-year-old woman presents with a persistently rapid heart rate that she attributes to her pacemaker. What does the ECG show?

The most common ECG finding of an acute pulmonary embolism ... S ratio greater that 1 in lead V1. Blocked premature atrial contractions occurring in a pattern of bigeminy can mimic sinus bradycardia.

[Dániel Buga], for instance, designed a compact ECG system the size of a credit card, cleverly dubbed Card/IO, that clearly demonstrates how to implement a single-lead ECG. Although obviously not ...

1 Department of Family Medicine ... The ability to identify an abnormality on the 12-lead ECG, suggestive of underlying cardiac disease associated with sudden cardiac death (SCD), is based on a sound ...