First enzyme to be raised in Ml is –
**Core Concept**
The question pertains to the biochemical markers of myocardial infarction (MI), specifically focusing on the earliest enzyme to be elevated. This requires an understanding of cardiac biomarkers and their temporal relationship to myocardial injury.
**Why the Correct Answer is Right**
In the context of myocardial infarction, several enzymes are elevated due to cardiac muscle damage. The correct answer is not explicitly stated, but based on common knowledge, **creatine kinase (CK)**, particularly the **CK-MB** isoform, is one of the earliest enzymes to rise after MI. However, **troponin** levels also start to rise early, often within 2-3 hours.
**Why Each Wrong Option is Incorrect**
**Option A:** Without the specific option provided, it's challenging to address each choice directly. Generally, options that are not CK-MB or troponin would be incorrect because they are not the first-line biomarkers for early MI detection.
**Option B:** Similarly, without the option, we can say that any option not representing an early biomarker for MI would be incorrect.
**Option C:** This would be incorrect if it does not align with the early biomarkers of MI.
**Option D:** This option is incorrect if it is not the earliest enzyme to be raised in MI.
**Clinical Pearl / High-Yield Fact**
A crucial point to remember is that **troponin** levels are highly specific for cardiac damage and are now the preferred early marker for diagnosing MI due to their sensitivity and specificity.
**Correct Answer:** Correct Answer: D. Troponin.