Buffalo Bills statement: "Damar Hamlin suffered a heart attack."
A heart attack and cardiac arrest are not the same thing.
A heart attack is heart muscle damage caused by a blocked or damaged coronary artery.
Cardiac arrest is caused by a disruption of electrical signals.
Are the Bills saying a heart attack - a blocked or damaged artery - caused the cardiac arrest that almost killed Hamlin?
That means Hamlin's recent Covid booster is a plausible suspect in this almost fatal medical event.