Cyanide gas inhalation typically presents with which progression?

Cyanide gas inhalation typically presents with which progression?

• A. Sudden onset—with rapid unconsciousness, respirations rapid then convulsions at first then slow and gasping
• B. Gradual onset of dyspnea
• C. Dry skin
• D. Euphoria

Answer: (A)

Cyanide prevents cells from using oxygen, causing rapid cellular hypoxia even when oxygen in the blood is normal. This leads to a suddenly dramatic course: a person can lose consciousness quickly, the breathing may be fast at first as the body tries to compensate, then seizures may occur due to severe brain hypoxia, and as the condition worsens the respirations slow and become gasping. This abrupt progression differs from a gradual onset of dyspnea, and it isn’t typically associated with dry skin or feelings of euphoria.

Cyanide prevents cells from using oxygen, causing rapid cellular hypoxia even when oxygen in the blood is normal. This leads to a suddenly dramatic course: a person can lose consciousness quickly, the breathing may be fast at first as the body tries to compensate, then seizures may occur due to severe brain hypoxia, and as the condition worsens the respirations slow and become gasping. This abrupt progression differs from a gradual onset of dyspnea, and it isn’t typically associated with dry skin or feelings of euphoria.