A woman has been provisionally diagnosed with pheochromocytoma. At the stage of intermission her BP is within norm: there is a tendency towards tachycardia. No urine pathologies. The decision has been made to perform a provocative test with histamine. What drug should be kept close at hand for emergency aid in case of a positive test result?

Answer options

1. Pipolphen (Promethazine)
2. Nifedipine
3. Phentolamine
4. Prednisolone
5. Mesaton (Phenylephrine)

Explanation

Pipolphen prevents motion sickness and treats nausea and vomiting or pain after surgery. It is also used as a sedative or sleep aid.Phentolamine is a prescription medication used to reverse numbness after oral and dental procedures, to prevent and control episodes of dangerously high blood pressure, to prevent and treat accidental injection of certain drugs under the skin, and to diagnose a condition called pheochromocytoma.