Twenty-four hours later, the same patient remains in the ICU. The Esmolol drip is at 75mcg/kg/min. The heart rate is 60, and the blood pressure is 90/62. The oxygen saturation is 98. She is alert and oriented. The urine output is 60ml/hr. She is in no distress. The next action of the nurse is?

1. Stop the drip
2. Call the physician
3. Increase the drip
4. Document VS Q 60min