Cardiovascular Consequences of Pulmonary Hypertension (original) (raw)
2008, Nursing Clinics of North America
Pulmonary hypertension (PH) is exemplified by elevated pulmonary arterial pressure and can be either idiopathic or arise secondary to a myriad of causes. Normal pulmonary artery pressure is 15 mm Hg to 20 mm Hg systolic and 8 mm Hg to 15 mm Hg diastolic. According to the National Heart, Lung, and Blood Institute (NHLBI) of the National Institutes of Health, pulmonary arterial hypertension (PAH) is defined as a mean pulmonary artery pressure greater than 25 mm Hg, with a pulmonary capillary or left atrial pressure of less than 15 mm Hg . Developed in 1998 and updated in 2003, the World Health Organization (WHO) established a classification system for pulmonary hypertension [2] that includes five categories (Box 1). Use of the classification system is supported by both the WHO and NHLBI to promote a consistent nomenclature and classification system.
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