Which severe reaction to contrast media may lead to death?

Life-threatening arrhythmias represent a severe reaction to contrast media that can lead to death, primarily due to their ability to disrupt the normal electrical activity of the heart. This disruption can result in conditions such as ventricular tachycardia or ventricular fibrillation, which can quickly progress to cardiac arrest if not promptly addressed.

In the context of an interventional radiology setting, where contrast media is often utilized for imaging or therapeutic purposes, awareness of the potential for severe reactions is critical. Life-threatening arrhythmias can occur in patients who may already have underlying cardiovascular disease, leading to increased risk upon exposure to contrast agents. Immediate recognition and intervention are essential in such instances to stabilize the patient's heart rhythm and potentially save their life.

While other reactions such as bronchospasm, persistent vomiting, and facial urticaria are concerning and can lead to complications, they typically do not carry the same immediate and fatal implications as life-threatening arrhythmias following exposure to contrast media. Addressing and managing these reactions is important in patient care, but the gravitas and urgency associated with arrhythmias set them apart in this scenario.