Here is the results of an experiment in the 1900s where 1200 swine were hit with balls to induce this. 30% of them experienced this phenomenon. 3% never experienced this and 7 did with a greater than 80% chance. And these are swine weighing 44lbs. If they weighed more than 88lbs there was a significant dropoff in occurrence.
Here is the results of an experiment in the 1900s where 1200 swine were hit with balls to induce this. 30% of them experienced this phenomenon. 3% never experienced this and 7 did with a greater than 80% chance. And these are swine weighing 44lbs. If they weighed more than 88lbs there was a significant dropoff in occurrence.
https://www.ahajournals.org/doi/full/10.1161/circep.111.962712#
Read the section under Genetic Susceptibility and Variables Critical to the Induction of Ventricular Fibrillation.
I would assume since then we've been able to determine what specifically predisposes people to this and is what is being mentioned.
Science...