Final answer:
The physician is likely to order Digibind for this patient.
Step-by-step explanation:
The medication that the physician is likely to order for this patient is Digibind.
Severe bradycardia, nausea, and vomiting are symptoms of Digoxin toxicity, and a Digoxin level of 4 ng/mL is considered to be elevated. Digibind, also known as Digoxin immune fab, is an antidote used to treat Digoxin toxicity by binding to the excess Digoxin in the body and preventing its effects.
Narcan (A) is used to reverse the effects of opioid overdose. Aminophylline (B) is a medication used to treat asthma and bronchospasm. No medication (D) would not be appropriate because an elevated Digoxin level indicates the need for intervention.