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In an EK101 Physiology passage, it presents a patient who experiences delayed breathing, headache, and dizziness after arriving in a high-altitude city. The question asks "which of the following curves most likely represents the oxyhemoglobin dissociation curve of the patient in this passage?"
The answer shows a left shift in the oxygen dissociation curve and the explanation is, "The left shift in the curve would allow the hemoglobin molecule to drop off more oxygen in the tissues."
Wouldn't it be the opposite? If there is a left shift, wouldn't that represent an increased affinity for O2 by Hb, meaning less O2 gets dropped off at the tissues? I thought this would be the opposite of what we want our body to do in high altitudes :/
The answer shows a left shift in the oxygen dissociation curve and the explanation is, "The left shift in the curve would allow the hemoglobin molecule to drop off more oxygen in the tissues."
Wouldn't it be the opposite? If there is a left shift, wouldn't that represent an increased affinity for O2 by Hb, meaning less O2 gets dropped off at the tissues? I thought this would be the opposite of what we want our body to do in high altitudes :/