Which symptom is more typical of carbon monoxide poisoning than cyanide inhalation?

Which symptom is more typical of carbon monoxide poisoning than cyanide inhalation?

• A. Headache with rapid onset
• B. Hypotension and cardiovascular collapse
• C. Seizures
• D. Rapid unconsciousness followed by slow respirations

Answer: (B)

This question tests how carbon monoxide and cyanide affect oxygen in the body in different ways. Carbon monoxide binds to hemoglobin and reduces the blood’s capacity to carry oxygen, so tissues become starved for oxygen and the heart and blood vessels can be strained. As exposure worsens, the heart may not pump effectively and perfusion falls, leading to low blood pressure and even cardiovascular collapse. That systemic failure is a hallmark of severe carbon monoxide poisoning. Cyanide, on the other hand, blocks cells from using the oxygen that is delivered, so tissues experience cellular hypoxia despite oxygen being present in the blood. Early signs are more dominated by central nervous system effects such as seizures, confusion, and rapid progression to coma, rather than initial cardiovascular collapse. So, the finding of hypotension and cardiovascular collapse aligns more with carbon monoxide poisoning than cyanide inhalation, making it the best choice.

This question tests how carbon monoxide and cyanide affect oxygen in the body in different ways. Carbon monoxide binds to hemoglobin and reduces the blood’s capacity to carry oxygen, so tissues become starved for oxygen and the heart and blood vessels can be strained. As exposure worsens, the heart may not pump effectively and perfusion falls, leading to low blood pressure and even cardiovascular collapse. That systemic failure is a hallmark of severe carbon monoxide poisoning.

Cyanide, on the other hand, blocks cells from using the oxygen that is delivered, so tissues experience cellular hypoxia despite oxygen being present in the blood. Early signs are more dominated by central nervous system effects such as seizures, confusion, and rapid progression to coma, rather than initial cardiovascular collapse.

So, the finding of hypotension and cardiovascular collapse aligns more with carbon monoxide poisoning than cyanide inhalation, making it the best choice.