This results in negatively-directed flutter waves in the inferior leads. At times, the direction of the circuit can reverse, causing clockwise atrial flutter from the same anatomical location.

Identifying an acute myocardial infarction on the 12-lead ECG is the most important thing you can learn in ECG interpretation. Time is muscle when treating heart attacks. Missing a ST segment ...

As noted above, the precordial leads are unreliable, compromising by their inclusion calculations deriving from the set of 12 ECG leads. It appears, therefore, that using sums of data from the six ...

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