A Patient Taking an ECG Shows a Regular Sawtooth Pattern

Multiple Choice

A patient taking an ECG shows a regular sawtooth pattern with 30 P waves within a 6-sec interval (30 large boxes) . What course of treatment should this patient receive for this arrhythmia?
1) Calcium channel blockers
2) Digoxin
3) Cardioversion
4) Defibrillation

A) 1, 2, and 3 only
B) 2 and 4 only
C) 3 only
D) 1, 2, 3, and 4