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Questions and Answers
Why is the Po2 of blood normal in Co poisoning despite reduced O2 content?
Why is the Po2 of blood normal in Co poisoning despite reduced O2 content?
- Since O2 is readily available in the lungs (correct)
- The question is incorrect, Po2 of blood is not normal in Co poisoning
- Because Co poisoning does not affect O2 binding to hemoglobin
- Due to the increased affinity of hemoglobin for CO2
What is the primary effect of administering pure O2 in Co poisoning?
What is the primary effect of administering pure O2 in Co poisoning?
- It reduces the O2 content of blood
- It increases the affinity of hemoglobin for CO2
- It slows down the respiratory center
- It rapidly displaces CO from hemoglobin (correct)
What is the effect of combining O2 with hemoglobin in the lungs?
What is the effect of combining O2 with hemoglobin in the lungs?
- It has no effect on the pH of hemoglobin
- It increases the affinity of hemoglobin for CO
- It makes hemoglobin more alkaline
- It makes hemoglobin more acidic (correct)
What is the purpose of administering 5 percent CO2 in Co poisoning therapy?
What is the purpose of administering 5 percent CO2 in Co poisoning therapy?
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What is the effect of acidic hemoglobin on its ability to combine with CO2?
What is the effect of acidic hemoglobin on its ability to combine with CO2?
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Study Notes
Carbon Monoxide Poisoning
- O2 content of blood is greatly reduced in CO poisoning, but Po2 of blood may still be normal
- CO poisoning can be treated with oxygen therapy, which can displace CO rapidly
Oxygen Therapy
- Administration of pure O2 can displace CO rapidly
- Adding 5% CO2 to oxygen therapy strongly stimulates the respiratory center
Hemoglobin and CO2
- When oxygen combines with hemoglobin in the lungs, it creates a more acidic environment
- This highly acidic hemoglobin has a lower tendency to combine with CO2
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Description
Learn about the effects of carbon monoxide poisoning on blood oxygen levels and how to treat it with oxygen and CO2 administration. Understand the chemistry behind hemoglobin's interaction with CO2 and O2.
