The presence of 2:1 exit block was definitely established in 2 patients, one with an atrial, and the other with a ventricular tachycardia. Since this phenomenon is a property of automatic rhythms, both paroxysms were ascribed to focal impulse formation. Nevertheless, this mechanism is not to be attributed to all ectopic rhythms.
ASJC Scopus subject areas
- Cardiology and Cardiovascular Medicine