If a patient becomes severely hypotensive after contrast media administration, which medication can be administered intravenously?

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The appropriate medication to administer intravenously in the case of severe hypotension following contrast media administration is adrenaline. Adrenaline is a powerful vasopressor and can rapidly increase blood pressure by constricting blood vessels and increasing cardiac output. This is particularly important in hypotensive situations where immediate action is necessary to stabilize the patient.

Atropine, while it can be used to treat bradycardia (slow heart rate), does not address hypotension directly. Sodium bicarbonate is generally used to treat metabolic acidosis or to manage drug overdoses, whereas diphenhydramine is an antihistamine primarily used in the treatment of allergic reactions. None of these medications effectively raise blood pressure in the same way that adrenaline does, making adrenaline the preferred choice in this scenario.

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