Indicate the ECG Criteria for the Following Dysrhythmias

Indicate the ECG criteria for the following dysrhythmias:

$\begin{array}{lccc} & \text { Third-Degree AV Block } & \text { 2:1 AV Block } \\ \text { Ventricular } \\ \text { Rhythm } & ----------& ---------- \\ \text { PR interval } & ----------& ---------- \\ \text { QRS width } & ----------& ---------- \\\end{array}$