Which of the following is a cardiac biomarker that may be elevated in PE?

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Study for the Pulmonary Emergencies Test. Improve your skills with flashcards and multiple choice questions, each question has hints and explanations. Get ready for your exam!

Multiple Choice

Which of the following is a cardiac biomarker that may be elevated in PE?

Explanation:
When a pulmonary embolism suddenly increases the right ventricle’s afterload, the heart can suffer injury from the strain and potential ischemia. This releases troponin I or T into the bloodstream, making it a cardiac biomarker that may be elevated in PE. Elevated troponin in this context signals myocardial injury due to right-sided strain and is associated with worse prognosis, helping with risk stratification. D-dimer is a marker of fibrin breakdown used to help diagnose PE but isn’t a cardiac injury marker. BNP reflects ventricular stretch and can rise with right-heart strain but isn’t as specific for myocardial injury as troponin. ABG is a gas analysis test, not a cardiac biomarker.

When a pulmonary embolism suddenly increases the right ventricle’s afterload, the heart can suffer injury from the strain and potential ischemia. This releases troponin I or T into the bloodstream, making it a cardiac biomarker that may be elevated in PE. Elevated troponin in this context signals myocardial injury due to right-sided strain and is associated with worse prognosis, helping with risk stratification. D-dimer is a marker of fibrin breakdown used to help diagnose PE but isn’t a cardiac injury marker. BNP reflects ventricular stretch and can rise with right-heart strain but isn’t as specific for myocardial injury as troponin. ABG is a gas analysis test, not a cardiac biomarker.

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