Healthcare providers categorize second-degree heart block subtypes—Mobitz type 1 and type 2—based on their physical signs on an electrocardiogram (ECG), which records the electrical activity ...

In second-degree atrioventricular nodal block — also known as Wenckebach block or Mobitz ... nodal block, a 1:1 P-wave-to-QRS-complex ratio is not maintained. Second-degree type I AV block ...