How long can you remain conscious after your heart stops beating?

Ejection Fraction: 50-75%- Heart's pumping ability is Normal Ejection Fraction: 36-49%- Heart's pumping ability is Below Normal Ejection Fraction:  35% and below- Heart's pumping ability is Low It is important to note that low ejection fractions caused by conditions such as heart failure....

The left and the right side of the heart are separated by walls called Septums. There are four chambers of the heart. Two atriums and two ventricles. The atriums are separated by the Atrial septum, and, the ventricles are separated by the Ventricular septum.

Yes, stress can cause heart palpitations because when you are stressed, your body releases a hormone called adrenaline which makes your heart beat faster. But, it could be something else too like too much caffeine or alcohol, certain medications, asthma inhalers, dehydration and other health issues.....