1. increase the volume, especially in cases of left-right shunt, the right ventricular hypertrophy to compensate for the additional quantities of blood causes.
2. increased afterload, mainly due to obstructive lesions such as valvular stenosis, or coarctation.
3. Factors, the contractility of muscle fibers, such as myocardial ischemia, severe anemia, or suffocation, heart block, universities, and low potassium, glucose to affect calcium or magnesium.
4. High standards of cardiac output, which exceeds the body’s need for oxygen-rich blood cardiac output (although the volume can be normal), such as anemia in obstructive lung disease, hyperthyroidism and severe.
In children, heart failure is most common secondary structural anomalies that to increased blood volume and pressure. This is a symptom caused by underlying heart disease, not a disease in itself, since it imposed a rule the result of an excessive workload in the normal myocardium. Most children who suffer from heart failure, children, and more than 50% under the age of 1 month. » Read more: Clinical Summary of Congestive Heart Failure (CHF)