Pulmonary Hypertension—Child

(Hypertension, Pulmonary—Child)

Definition

Pressure helps blood flow through blood vessels. Hypertension occurs when this pressure gets too high. When this happens in the blood vessels in the lungs, it is called pulmonary hypertension.As a result, the right side of the heart needs to pump harder to move blood against the pressure. If left untreated, the right side of the heart can eventually fail.
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Causes

The blood vessels in the lungs are sensitive to oxygen. The lower the level of oxygen, the narrower the vessels become. Higher pressure will be needed to push blood through the narrow blood vessels. Pressure will also increase when there is more blood in the lungs than normal.There are many different causes of pulmonary hypertension in children, such as:
  • Birth defects that affect the heart, such as septal defects and leaky heart valves
  • Deformity of the chest wall (pectus excavatum)
  • Conditions like scleroderma , sickle cell disease , lupus , and HIV
  • Chronic lung disease
  • Blood clots in the lungs
Pulmonary hypertension can also be inherited. This is called familial pulmonary hypertension. In other cases, the cause is unknown.

Risk Factors

Factors that may increase your risk of pulmonary hypertension include:
  • Being born with a heart defect or a deformity of the chest wall
  • Having certain conditions, such as scleroderma, sickle cell disease, lupus, and HIV
  • Having heart or lung disease
  • Having a family member with pulmonary hypertension
  • Living in a high altitude

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