The client has an atrial rate of 70 and a ventricular rate o…

The client has an atrial rate of 70 and a ventricular rate of 30 on an electrocardiogram (ECG) strip. There is no PR interval, QRS complex is 0.16,  the P-P interval is regular, and the R-R interval is regular. The client has a blood pressure of 80/42 mm Hg. Which action will the nurse take?