MS-1626

A 30-year-old woman presents with similar symptoms as the previous case. She complains of shortness of breath, pleuritic chest pain, and haemoptysis. Her vital signs are heart rate 110 bpm, blood pressure 110/65 mmHg, oxygen saturation 93% on room air, and respiratory rate 21 breaths per minute. A CT pulmonary angiography is ordered.

During the procedure, the patient’s blood pressure drops to 80/50 mmHg, and she develops swollen lips and hives on her skin. The on-call physician administers IM adrenaline.

What is the purpose of the medication given?