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Toxicology: Carbon Monoxide Poisoning Treatment

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Toxicology: Carbon Monoxide Poisoning Treatment

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Questions and Answers

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?

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?

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?

<p>To strongly stimulate the respiratory center</p> Signup and view all the answers

What is the effect of acidic hemoglobin on its ability to combine with CO2?

<p>It decreases the affinity of hemoglobin for CO2</p> Signup and view all the answers

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.