Key result
Intermittent wide QRS complexes reflect Ashman phenomenon in atrial fibrillation via long-short R-R intervals.
Why the study?
Mechanisms underlying intermittent wide QRS complexes in atrial fibrillation require clarification to differentiate Ashman phenomenon from other causes.
Differentiating Ashman phenomenon from premature ventricular complexes is important to avoid misdiagnosing intermittent QRS widening as a more sinister ventricular arrhythmia.
Mechanisms of the intermittent wide QRS complexes.
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Rob Scott Millar (2017) studied Atrial fibrillation with intermittent wide QRS complexes. The intermittent wide QRS complexes in the ECG are caused by atrial fibrillation with Ashman phenomenon, resulting from a long R-R interval followed by a short R-R interval.
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