Abstract
Pulmonary hypertension (PH) in clinical practice is most commonly secondary to chronic cardiac or pulmonary disease. PH secondary to left heart disease, Group 2 PH, can result from heart failure with reduced ejection fraction, heart failure with preserved ejection fraction, valvular heart disease, among others. PH secondary to hypoxic pulmonary disease, classified as Group 3 PH, is most often associated with chronic obstructive pulmonary disease, interstitial lung disease, obesity hypoventilation syndrome and obstructive sleep apnea. In this chapter we will discuss the epidemiology, cellular mechanisms, clinical diagnosis and evaluation, management and outcomes of Group 2 and Group 3 PH. Also highlighted are overlap syndromes, that may have characteristics of Group 1, 2 and 3 PH. These syndromes include Systemic Sclerosis, Lymphangioleiomyomatosis, Pulmonary Langerhans Cells Histiocytosis and Sarcoidosis.
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Huston, J., Hatton, N.D., Ryan, J.J. (2016). Pulmonary Hypertension in Patients Without Pulmonary Arterial Hypertension. In: Maron, B., Zamanian, R., Waxman, A. (eds) Pulmonary Hypertension. Springer, Cham. https://doi.org/10.1007/978-3-319-23594-3_3
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