(FIT)-Module 4 Workshop 6: Electrocardiographic and Electrophysiological Correlations-Gerstenfeld Case 1 Answer

Video Transcription

Video Summary

The video discusses the effects of adenosine on cardiac conduction, focusing on two outcomes: AV nodal block and the conversion of atrial flutter to fibrillation. The mechanism involves increased potassium channel conductance, leading to hyperpolarization of AV nodal cells, resulting in AV block. Additionally, this increased conductance shortens the action potential duration, facilitating the conversion of flutter to fibrillation. The correct answer to the posed question is option C, increased potassium channel conductance, as other options such as depolarization, prolonged action potential, and beta receptor blockade do not apply.

Keywords

adenosine

cardiac conduction

AV nodal block

potassium channel conductance

atrial flutter to fibrillation conversion