Great ECG and discussion on top of that. All about bradycardia and something called "systole" arrest from Dr Amal Mattu.
I was also taught about calcium being lethal in Digoxin overdoses and its a hard dogma to ignore. Just remember that decision making in medicine is not just trials and evidence but a combination of patient preference, clinical course, physician experience and sometimes cost.
For more of his vids or older cases, go to www.ekg.umem.org