emilysksmily322 emilysksmily322 13-02-2024 Health contestada Progressive prolongation of the PR interval followed by a dropped beat suggests: a) Mobitz type I (Wenckebach) atrioventricular (AV) block b) Mobitz type II AV block c) Third-degree (complete) AV block d) Sinus node dysfunction (sick sinus syndrome)