Risk Factors for Cardiac Arrest

Here are some risk factors found listed at Mayo Clinic

Extract from http://www.mayoclinic.com/health/sudden-cardiac-arrest/DS00764/DSECTION=4

In addition to a personal or family history of heart disease — including heart rhythm disorders, congenital heart defects, congestive heart failure and cardiomyopathy — other factors that may increase your risk of sudden cardiac arrest include:

1. Low output of blood from you heart (ejection fraction)
2. Previous episode of cardiac arrest
3. Previous heart attack
4. Markedly changed blood levels of potassium or magnesium — minerals called electrolytes that need to be properly balanced in order to maintain vital organ functions, including that of the heart
5. Hyperthyroidism, a condition in which your thyroid gland produces too much of the hormone thyroxine, speeding up your metabolism and potentially causing arrhythmia
   Pulmonary hypertension, a type of high blood pressure that affects the arteries in your lungs
6. Taking drugs that affect your heart rhythm, such as prescription anti-arrhythmic or pro-arrhythmic drugs, or over-the-counter medications, such as pseudoephedrine-containing cold medicines
7. Using illicit drugs, such as cocaine or amphetamines

Look at point 6, those are your flu medicine. Never knew it will affect your heart rhythm.