Which statement about ricin exposure is accurate?

Which statement about ricin exposure is accurate?

• A. It is contagious
• B. It is a bacterium
• C. It causes pulmonary edema and circulatory failure
• D. It causes rapid paralysis

Answer: (C)

Ricin exposure is a noncontagious toxin exposure that, when inhaled, damages lung tissue and can lead to pulmonary edema and circulatory failure. This happens because ricin inhibits protein synthesis in cells, causing cell death and capillary leakage, which in the lungs manifests as difficulty breathing and fluid buildup, potentially progressing to systemic shock and organ failure. The statement captures the key clinical consequence of inhalational ricin exposure. Ricin is not contagious and is not a bacterium, so those options mischaracterize its nature. It also doesn’t primarily cause rapid paralysis; its main danger in exposed individuals is the pulmonary and circulatory impact from toxin-induced cellular injury. In practice, care focuses on supportive measures such as airway and breathing support and managing hemodynamics, since there is no antidote.

Ricin exposure is a noncontagious toxin exposure that, when inhaled, damages lung tissue and can lead to pulmonary edema and circulatory failure. This happens because ricin inhibits protein synthesis in cells, causing cell death and capillary leakage, which in the lungs manifests as difficulty breathing and fluid buildup, potentially progressing to systemic shock and organ failure. The statement captures the key clinical consequence of inhalational ricin exposure. Ricin is not contagious and is not a bacterium, so those options mischaracterize its nature. It also doesn’t primarily cause rapid paralysis; its main danger in exposed individuals is the pulmonary and circulatory impact from toxin-induced cellular injury. In practice, care focuses on supportive measures such as airway and breathing support and managing hemodynamics, since there is no antidote.