How does a constrictor know when to let go?

[knox]

Originally Posted by RandyRhoads

With that being said now i'm curious what the heart does when this happens. Could it possibly send the preys heart into ventricular fibrilation, or would it just slow down into bradyastolic cardiac arrest. How would you even fifure that one out, hook the prey up to a tiny EKG? LOL

Definite Asystole. No matter how much the SA node is firing, the myocardium can't contract against blood that has no place to go.