Cardiac troponin may elevate after a stroke due to what mechanism?

Unlock all questions

This demo includes only 20 questions. Upgrade to access hundreds of questions, flashcards, exam simulations, and disable ads.

Full question bankExam simulationsFlashcards
From $25.99Unlock all

Get ready for the Hemisphere IV Rapid Stroke Response Test. Study with flashcards and multiple choice questions, each question has hints and explanations. Prepare effectively and boost your confidence for the exam!

Multiple Choice

Cardiac troponin may elevate after a stroke due to what mechanism?

Explanation:
Autonomic dysfunction after a stroke can trigger a surge of sympathetic activity that directly affects the heart. This neurogenic surge releases a flood of catecholamines, causing coronary vasospasm and myocardial stunning or injury. The heart muscles become transiently distressed, releasing troponin even when there isn’t an occluded coronary artery. This neurogenic cardiac injury explains troponin elevation following stroke. Renal failure or sepsis can also raise troponin for separate reasons, but the post-stroke mechanism most closely tied to this context is the autonomic-driven myocardial injury that arises from brain–heart autonomic dysregulation.

Autonomic dysfunction after a stroke can trigger a surge of sympathetic activity that directly affects the heart. This neurogenic surge releases a flood of catecholamines, causing coronary vasospasm and myocardial stunning or injury. The heart muscles become transiently distressed, releasing troponin even when there isn’t an occluded coronary artery. This neurogenic cardiac injury explains troponin elevation following stroke.

Renal failure or sepsis can also raise troponin for separate reasons, but the post-stroke mechanism most closely tied to this context is the autonomic-driven myocardial injury that arises from brain–heart autonomic dysregulation.

More Multiple Choice Questions
Subscribe

Get the latest from Passetra

You can unsubscribe at any time. Read our privacy policy