ventricular fibrillation
An infarct.
Asphyxiation
One common cause of sudden cardiac death is ventricular fibrillation, a type of arrhythmia where the heart beats rapidly and irregularly. This condition can disrupt the heart's ability to pump blood effectively, leading to a sudden loss of heart function. It is a medical emergency that requires immediate intervention such as defibrillation to restore a normal heart rhythm.
When the heart suddenly stops beating effectively and breathing ceases, a person is said to have experienced sudden cardiac death.
Asphyxiation
You die
Hypertrophic Cardiomyopathy is the leading cause of sudden cardiac death in young athletes, and causes a portion of the heart (the myocardium) to thicken. It can also cause an irregular heartbeat.
not very
While sudden death can occur unexpectedly, there is usually an underlying cause. This can include cardiac issues like a heart attack or arrhythmia, stroke, blood clots, drug overdose, or sudden severe infection. An autopsy is typically performed to determine the exact cause of death.
Aspirin.
M. E. Rajskina has written: 'Ventricular fibrillation and sudden coronary death' -- subject- s -: Cardiac arrest, Complications, Coronary Disease, Coronary heart disease, Death, Sudden, Cardiac, Etiology, Physiopathology, Ventricular fibrillation
One possibility is death because the medulla oblongatta is considered the cardiac center. Without it, or if it is damaged severely can lead to cardiac failure and death.