The PR interval on the surface electrocardiogram (ECG), which reflects the myocardial depolarization and conduction from the peri-sinus nodal atrial tissue all the way to the Purkinje–muscle junction, ...
The diagnosis is NSR, Mobitz type I second-degree atrioventricular (AV) block (Wenckebach), nonconducted (blocked) PACs, and early transition (counterclockwise rotation). The rhythm is irregular, but ...
Background —Smoking is associated with arrhythmia and sudden cardiac death, but the biological mechanisms remain unclear. In electrocardiogram (ECG) recordings abnormal durations of ventricular ...
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