Sinus tachycardia nursing

A patient develops sinus tachycardia at a rate of 32 beats/min has blood pressure of 80/42 mm Hg and is complaining of feeling faint. Which action should the nurse take:

● Rock the heart rhythm and BP in 5 min

● Give the scheduled dose of diltiazem (Cardizem)

● Have the patient perform valsalva maneuver

● Administer 0.5mg atropine