During anaphylaxis, which vascular change occurs?

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

Prepare for the NREMT AEMT Test. Study with flashcards and multiple-choice questions. Each question includes hints and explanations. Get ready for your exam now!

Multiple Choice

During anaphylaxis, which vascular change occurs?

Explanation:
During anaphylaxis, mediators released from mast cells and basophils cause rapid dilation of the small arteries and veins. This vasodilation lowers systemic vascular resistance and can lead to a drop in blood pressure (hypotension), contributing to shock if not treated. At the same time, these mediators increase capillary permeability, allowing fluid to leak into the interstitial space, which worsens perfusion and can cause edema. The primary vascular change is blood vessel dilation, not constriction, rupture, or no change in tone.

During anaphylaxis, mediators released from mast cells and basophils cause rapid dilation of the small arteries and veins. This vasodilation lowers systemic vascular resistance and can lead to a drop in blood pressure (hypotension), contributing to shock if not treated. At the same time, these mediators increase capillary permeability, allowing fluid to leak into the interstitial space, which worsens perfusion and can cause edema. The primary vascular change is blood vessel dilation, not constriction, rupture, or no change in tone.

More Multiple Choice Questions
Subscribe

Get the latest from Passetra

You can unsubscribe at any time. Read our privacy policy