MSFinals-5790

A 28-year-old man with cystic fibrosis (CF) arrives at the Emergency Department (ED) with haemoptysis. During his stay in the ED, he experiences another episode of frank haemoptysis, which measures 180 ml.
A prompt computed tomography (CT) aortogram is conducted, revealing dilated and tortuous bronchial arteries.
What action could potentially harm the management of this patient?