Atropine Test
In the initial study aimed at evaluating vagal denervation, we employed the atropine test (0.04mg/kg up to 2mg intravenously) to ascertain whether any residual vagal tone remained at the conclusion of CNA3,29. However, it should be noted that even in cases of partial CNA, there is an immediate increase in sinus rate, which diminishes the sensitivity of the atropine test as sinus rate rises. Additionally, after atropine infusion, assessing further denervation attempts becomes challenging.