Cryoablation injury involves which mechanisms?

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 $24.99Unlock all

Study for the EPU Electrophysiology Exam with comprehensive questions and explanations. Enhance your knowledge with flashcards and a variety of question formats to ensure you are prepared to excel!

Multiple Choice

Cryoablation injury involves which mechanisms?

Explanation:
Cryoablation injures tissue through two linked processes. During freezing, water forms ice crystals inside and around cells, mechanically disrupting membranes, organelles, and the extracellular matrix, which causes direct cellular damage. Then, as the tissue thaws, the microvasculature sustains injury: endothelial damage, vasoconstriction, increased permeability, and microthrombosis impair blood flow, leading to tissue ischemia and delayed cell death. Because both freezing-phase ice crystal injury and thawing-phase microcirculatory failure contribute to the injury, this mechanism best explains tissue destruction. Chemical toxicity does not play a role in cryoablation injury.

Cryoablation injures tissue through two linked processes. During freezing, water forms ice crystals inside and around cells, mechanically disrupting membranes, organelles, and the extracellular matrix, which causes direct cellular damage. Then, as the tissue thaws, the microvasculature sustains injury: endothelial damage, vasoconstriction, increased permeability, and microthrombosis impair blood flow, leading to tissue ischemia and delayed cell death. Because both freezing-phase ice crystal injury and thawing-phase microcirculatory failure contribute to the injury, this mechanism best explains tissue destruction. Chemical toxicity does not play a role in cryoablation injury.

More Multiple Choice Questions
Subscribe

Get the latest from Examzify

You can unsubscribe at any time. Read our privacy policy