Learning ECG Through Case Study- Part 2

First-degree heart block involves a fixed prolonged PR interval (>200 ms). Second-degree AV block (type 1) is also known as Mobitz type 1 AV block or Wenckebach phenomenon. Typical ECG findings in Mobitz type 1 AV block include progressive prolongation of the PR interval until eventually the atrial...

• The discussion centered around diagnosing various ECG rhythms, emphasizing the importance of a systematic approach. Key aspects included identifying P waves, assessing RR interval regularity, and determining QRS complex width. Correctly diagnosing sinus tachycardia requires verifying a one-to-one P wave to QRS ratio with a constant PR interval and a normal P wave axis.