Antidote for cyanide poison is: March 2012
**Question:** Antidote for cyanide poison is: March 2012
**Core Concept:** Cyanide poisoning occurs due to the inhibition of mitochondrial respiration by binding to the cytochrome c oxidase complex, leading to impaired cellular respiration and ultimately cardiac arrest, respiratory failure, and death.
**Why the Correct Answer is Right:** The correct answer is potassium nitrite (D), also known as the "March 2012" protocol. This protocol involves administering potassium nitrite (a nitrosylating agent) and sodium hydrosulfide (a reducing agent) to form sodium cyanide, which is then neutralized by the administration of activated charcoal. This process allows for the detoxification of cyanide by converting it to less toxic compounds, preventing its toxic effects.
**Why Each Wrong Option is Incorrect:**
A. Hydrogen cyanide (A) is a different type of cyanide, which is not the correct antidote for cyanide poisoning.
B. Hydroxocobalamin (C) is a vitamin B12 complex and does not effectively neutralize cyanide poisoning.
D. Potassium nitrite (D) is the correct antidote, as mentioned earlier.
**Why Each Wrong Option is Incorrect:**
A. Hydrogen cyanide (A) is a different type of cyanide, which is not the correct antidote for cyanide poisoning.
B. Hydroxocobalamin (C) is a vitamin B12 complex and does not effectively neutralize cyanide poisoning.
D. Potassium nitrite (D) is the correct antidote, as mentioned earlier.
**Clinical Pearl:** In cases of cyanide poisoning, the "March 2012" protocol is the recommended treatment approach. This protocol involves administering potassium nitrite and sodium hydrosulfide, followed by activated charcoal to neutralize the cyanide poisoning and prevent its toxic effects. This approach is crucial in managing cyanide poisoning, as hydrogen cyanide is not an effective antidote and hydroxocobalamin is not relevant in this context.
Remember, prompt recognition and administration of the correct antidote (potassium nitrite) is essential to prevent severe complications and save lives in case of cyanide poisoning.