Questions: The nurse assesses a client presenting with chest pain. Which components are key in the evaluation of myocardial infarction (MI)? ECG findings, such as absent P-wave Clinical features, including right arm numbness Rest relieves symptoms such as pain. Cardiac biomarkers, like troponin I and T

The answer is the last one: Cardiac biomarkers, like troponin I and T.

Explanation for each option:

1. ECG findings, such as absent P-wave: This is incorrect. While ECG findings are crucial in the evaluation of myocardial infarction, the absence of a P-wave is not a typical indicator of MI. Instead, ST-segment elevation, T-wave inversion, or the presence of Q-waves are more indicative of MI.

2. Clinical features, including right arm numbness: This is incorrect. While clinical features are important, right arm numbness is not a classic symptom of myocardial infarction. Typical symptoms include chest pain or discomfort, which may radiate to the left arm, neck, jaw, or back.

3. Rest relieves symptoms such as pain: This is incorrect. Rest typically relieves symptoms of angina, not myocardial infarction. MI pain is usually more severe and persistent, and it does not subside with rest.

4. Cardiac biomarkers, like troponin I and T: This is correct. Cardiac biomarkers, particularly troponin I and T, are key components in the evaluation of myocardial infarction. Elevated levels of these biomarkers indicate myocardial injury and are critical for the diagnosis of MI.

Summary: The key components in the evaluation of myocardial infarction include ECG findings indicative of MI and cardiac biomarkers like troponin I and T. Clinical features are also important, but right arm numbness and pain relief with rest are not typical indicators of MI.