**Question:** After contrast media injection in the Radiology department, a patient develops severe Hypotension, bronchospasm and cyanosis. Which one of the following drugs should be used for treatment?

A. Epinephrine
B. Salbutamol
C. Atropine
D. Nitroglycerin

**Core Concept:**

The presented symptoms, namely hypotension, bronchospasm, and cyanosis, are indicative of an allergic reaction to the contrast media. These symptoms are a result of the release of histamine and other inflammatory mediators, which cause vasoconstriction, bronchoconstriction, and cyanosis due to reduced oxygenation.

**Why the Correct Answer is Right:**

The correct answer, C. Atropine, is used to counteract the effects of histamine and other inflammatory mediators released during an allergic reaction. Atropine blocks the action of acetylcholine at the muscarinic receptors, thereby counteracting the bronchoconstriction, vasoconstriction, and cyanosis caused by histamine release.

**Why Each Wrong Option is Incorrect:**

A. Epinephrine (Adrenaline) is often used in clinical practice for treating anaphylaxis. However, in this context, it would exacerbate the symptoms as it is a direct vasoconstrictor, further enhancing the hypotension and bronchospasm.

B. Salbutamol (Sالبروبرانولول) is a beta-2 agonist used for bronchodilation. In this situation, it would worsen bronchospasm and hypotension.

D. Nitroglycerin is a vasodilator used for angina management. In this context, it would not be effective in treating hypotension and bronchospasm caused by the allergic reaction.

**Clinical Pearls:**

- Allergic reactions to contrast media are a known complication in radiology departments.
- Early recognition and appropriate treatment can prevent progression of the reaction and reduce morbidity and mortality.
- In the context of this question, the correct treatment is administering atropine to counteract the bronchospasm, hypotension, and cyanosis caused by histamine release.