Is it dangerous for a person having 30% heart pumping power? If yes, then how can it be cured?

Pakistani doctors says bypas its not possible in pakistan because bypas is dangerous.my father heart 3 veins blockage 1 100% 2 80% 3 70% blockage.. please help me..

In general, heart problem means your heart is not working properly. According to report Heart diseases or cardiovascular diseases are the most common cause of death for both men and women. Some most common heart problems are: Heart Attack Heart Failure Cardiac Arrhythmia Heart Valve P....

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....