Treatment of choice for cyanide poisoning is
**Core Concept**
Cyanide poisoning is a severe and potentially life-threatening condition that requires immediate treatment. The underlying principle in treating cyanide poisoning involves **antidotes** that can counteract the toxic effects of cyanide on cellular respiration.
**Why the Correct Answer is Right**
The treatment of choice for cyanide poisoning typically involves **hydroxocobalamin** or **sodium nitrite** followed by **sodium thiosulfate**. However, given the options are not specified, the general approach to treating cyanide poisoning is to use agents that can bind to cyanide, thereby neutralizing its effects on the body's cells, particularly on the **cytochrome c oxidase** enzyme in mitochondria.
**Why Each Wrong Option is Incorrect**
**Option A:** Without knowing the specific option, a common incorrect choice might be an agent that does not directly counteract cyanide's mechanism of action.
**Option B:** Similarly, if this option does not involve a cyanide antidote, it would be incorrect.
**Option C:** If this option proposes a treatment that is not aimed at neutralizing cyanide, it would not be the treatment of choice.
**Option D:** Assuming this is not the correct antidote or treatment approach for cyanide poisoning, it would be an inappropriate choice.
**Clinical Pearl / High-Yield Fact**
A key point to remember is that **hydroxocobalamin** works by binding to cyanide to form **cyanocobalamin** (vitamin B12), which is then excreted, thus making it a highly effective treatment for cyanide poisoning.
**Correct Answer:** D. Hydroxocobalamin.