Treatment of Carbon monoxide poisoning is:
**Core Concept**
Carbon monoxide (CO) poisoning occurs when CO binds to hemoglobin, forming carboxyhemoglobin (COHb), which reduces the oxygen-carrying capacity of blood. This can lead to tissue hypoxia, even in the presence of normal arterial oxygen levels.
**Why the Correct Answer is Right**
The treatment of CO poisoning involves administering 100% oxygen to displace CO from hemoglobin and promote its excretion through the lungs. Oxygen therapy is the mainstay of treatment and should be initiated promptly in cases of suspected CO poisoning. The half-life of COHb in room air is approximately 4 hours, which shortens to 40 minutes with 100% oxygen supplementation. This rapid decrease in COHb levels helps to restore oxygen delivery to tissues.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect as it does not specify the type of oxygen therapy required for CO poisoning treatment.
**Option B:** This option is incorrect as it may refer to a treatment for other conditions, such as cyanide poisoning, which requires specific antidotes like nitrates and thiosulfate.
**Option C:** This option is incorrect as it may refer to a treatment for other conditions, such as methanol or ethylene glycol poisoning, which require specific antidotes like fomepizole or ethanol.
**Clinical Pearl / High-Yield Fact**
In cases of CO poisoning, it's essential to recognize that patients may present with normal arterial blood gas (ABG) values, despite severe tissue hypoxia. Therefore, a high index of suspicion and prompt administration of 100% oxygen are crucial in the management of CO poisoning.
**Correct Answer: C. 100% oxygen therapy.**