Immediately following a barium swallow, a client noticed hives and a feeling of shortness of breath. although there were no known allergies to food or drugs prior to this incident, the diagnosis was an allergic reaction to the preservatives in the barium. which is the correct risk category for this incident

Procedure complications

Explanation:

The case in question where the person after having swallowed Barium, with no prior allergies known, shows certain symptoms.

This may be attributed to the risk category known as Procedure complication.

In this, complications were characterized as any deviation from the typical postoperative duration. This definition likewise considers asymptomatic confusions, for example, arrhythmia and atelectases.  

A sequela is an "eventual outcome" of medical procedure that is inborn to the methodeg, for instance, failure to stroll after a removal of the leg.

there are no mutiple choices here