There are four types of heart failure, according to the American Heart Association. There are two types of left-sided heart failure, systolic failure and diastolic failure; right ventricular heart failure; and congestive heart failure.
With systolic failure, the left ventricle loses its ability to contract normally, and the heart cannot pump blood with adequate force, says the American Heart Association. With diastolic failure, the left ventricle loses its ability to relax normally, and the heart cannot properly fill with blood during the resting period between each beat. Right ventricular heart failure typically results from a left-side heart failure and causes blood to back up in the veins. Congestive heart failure results from blood returning to the heart through the backed up veins, causing congestion in the body tissue.