Systolic failure, the most common cause of CHF, results from an inability of the heart to pump blood. It is a defect in the ability of the ventricles to contract. The ventricle loses its ability to generate enough pressure to pump blood against the pressure of the lungs (right ventricle) or the aorta (left ventricle).
Diastolic failure is the inability of the ventricles to fill during diastole. The result is venous engorgement of the pulmonary and systemic vascular systems.
There are various precipitating causes of heart failure. This is not an inclusive list but it will give an idea of how the following can lead to heart failure. Understanding these processes will help you answer most questions people may ask you about heart failure.





