Carbon monoxide poisoning causes_______________?
Correct answer: A. Oxygen dissociation curve shifts to left
- A. Oxygen dissociation curve shifts to left
- B. Hypoxic hypoxia
- C. Cyanosis
- D. Diffusion capacity of lungs decreases
Explanation
Carbon monoxide occupies haemoglobin binding sites and increases the oxygen affinity of the remaining sites, shifting the oxyhaemoglobin dissociation curve to the left. Cyanosis is usually absent because carboxyhaemoglobin gives the blood a bright red colour.
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