A nasal swab of patients exposed to nuclear events should be done prior to what?

The correct answer pertains to the necessity of collecting a nasal swab before decontamination procedures are undertaken. When individuals are exposed to potential nuclear events, it is crucial to gather biological samples such as nasal swabs to detect any radioactive materials or contamination. Collecting this sample early in the response process allows for accurate assessment of the level of exposure and can inform treatment decisions.

Decontamination processes often involve washing away contaminants, which could compromise the ability to collect a valid sample. Therefore, obtaining a nasal swab prior to decontamination ensures that medical professionals can analyze any radioactive particles or substances that may have been inhaled during the exposure. This information is essential for both immediate medical treatment and for understanding the potential long-term effects on health.

Other processes such as medical evaluation, transportation, and isolation are necessary steps in the management of exposed individuals, but the priority for sample collection to assess contamination directly aligns with decontamination timing.