More recent classification of this condition based on the underlying causes of pulmonary hypertension. This system classifies the condition based on whether it is caused by:
left-sided heart disease,
lung disease,
blood clots ,
narrowing of the arteries caused by all causes (including primary pulmonary hypertension), and
hindrance from outside the blood vessels (eg from the chest wall diseases that suppress the blood vessels).
Causes of Pulmonary Hypertension
Pulmonary hypertension can be caused oloeh diseases of the heart and lungs, such as:
chronic obstructive pulmonary disease (COPD),
emphysema,
kegaglan of the left heart ventricle,
recurrent pulmonary embolism (blood clots traveling from the legs or pelvic veins that prevent pulmonary arteries or chronic thromboembolic pulmonary hypertension), or
underlying diseases such as scleroderma.
Other conditions that may lead to pulmonary hypertension include:
dermatomyositis,
systemic lupus erythematosus,
sarcoidosis,
human immunodeficiency virus (HIV), and
who have advanced liver disease (porto-pulmonary hypertension).
Pulmonary hypertension can also be caused by blood oxygen levels are low as a chronic in some patients with sleep apnea or chronic lung disease.
Again, the pulmonary hypertension caused by other diseases can also be referred to as secondary pulmonary hypertension.
When pulmonary hypertension occurs without heart disease and underlying pulmonary or other diseases, it is called primary pulmonary hypertension. Primary pulmonary hypertension is more common in people younger and more in women than in men.
Recently this condition has rarely been reported with the use of drugs such as anti-obesity drug dexfenfluramine (Redux) and fen / phen. These medications have been removed from the market. Some street drugs such as cocaine and methamphetamines can cause severe pulmonary hypertension.
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