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Valve surgery: If an enlarged heart is caused by a problem with a heart valve, surgery can remove the valve and replace it with either an artificial valve or a tissue valve from a pig, cow or deceased human donor. If blood leaks backward through a valve (valve regurgitation), the leaky valve may be surgically repaired or replaced.
Nonetheless, recent studies in pediatric cardiology have revealed that HCM accounts for 42% of childhood cardiomyopathies, with an annual incidence rate of 0.47/100,000 in children. [67] Further, in asymptomatic cases, sudden death is considered one of the most-feared complications associated with the disease in select pediatric populations.
Dilated cardiomyopathy (DCM) is a condition in which the heart becomes enlarged and cannot pump blood effectively. [3] Symptoms vary from none to feeling tired, leg swelling, and shortness of breath. [2] It may also result in chest pain or fainting. [2] Complications can include heart failure, heart valve disease, or an irregular heartbeat. [3] [4]
Cardiomyopathy is a group of primary diseases of the heart muscle. [1] Early on there may be few or no symptoms. [1] As the disease worsens, shortness of breath, feeling tired, and swelling of the legs may occur, due to the onset of heart failure. [1]
The underlying commonality in these disease states is an increase in pressures that the ventricles experience. For example, in tetralogy of Fallot, the right ventricle is exposed to the high pressures of the left heart due to a defect in the septum; as a result the right ventricle undergoes hypertrophy to compensate for these increased pressures.
Older children will often squat instinctively during a tet spell. [17] This increases systemic vascular resistance and allows for a temporary reversal of the shunt. It increases pressure on the left side of the heart, decreasing the right to left shunt, thus decreasing the amount of deoxygenated blood entering the systemic circulation. [21] [22]
This switch causes deoxygenated blood from the right heart to be pumped immediately through the aorta and circulated throughout the body and the heart itself, bypassing the lungs altogether. In this same condition, the left heart continuously pumps oxygenated blood back into the lungs through the pulmonary artery, instead of out into the body's ...
In the early-onset form, an infant will present with poor feeding causing failure to thrive, or with difficulty breathing. The usual initial investigations include chest X-ray, electrocardiogram, and echocardiography. Typical findings are those of an enlarged heart with non-specific conduction defects.
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