Unlike first-degree AV nodal block, a 1:1 P-wave-to-QRS-complex ratio is not maintained. Second-degree type I AV block is specifically characterized by an increasing delay of AV nodal conduction ...

Unlike first-degree AV nodal block, a 1:1 P wave to QRS complex ratio is not maintained. Second degree type I AV block is specifically characterized by increasing delay of AV nodal conduction ...

There are two subtypes of second-degree heart block: Mobitz type 1 (also called a Wenckebach block), which may or may not cause symptoms, and Mobitz type 2, which can cause problems pumping blood ...

Patients who had symptomatic (fatigue, faintness, dyspnea, and syncope) type II second- or third-degree AV block, 2:1 AV block, atrial fibrillation with bradycardia (average heart rate ≤40 beats ...

Common consequences of increased vagal tone include sinus bradycardia, sinus arrhythmia and early repolarisation (figure 1). Other, less common markers of increased vagal tone are first-degree AV ...

Methods:Of 668 consecutive patients with symptomatic type II second- or third-degree AV block, 2:1 AV block, atrial fibrillation, and bradyarrhythmia, 108 patients (62 patients enrolled ...