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. 2016 Mar;8(3):350-8.
doi: 10.21037/jtd.2016.02.58.

Clinical characteristics and risk factors of pulmonary hypertension associated with chronic respiratory diseases: a retrospective study

Yonghua Chen  1 , Chunli Liu  1 , Wenju Lu  1 , Mengxi Li  1 , Cyrus Hadadi  1 , Elizabeth Wenqian Wang  1 , Kai Yang  1 , Ning Lai  1 , Junyi Huang  1 , Shiyue Li  1 , Nanshan Zhong  1 , Nuofu Zhang  1 , Jian Wang  1
Affiliations

Clinical characteristics and risk factors of pulmonary hypertension associated with chronic respiratory diseases: a retrospective study

Yonghua Chen et al. J Thorac Dis. 2016 Mar.

Abstract

Background: Chronic respiratory disease-associated pulmonary hypertension (PH) is an important subtype of PH, which lacks clinical epidemiological data in China.

Methods: Six hundred and ninety three patients hospitalized from 2010 to 2013 were classified by echocardiography according to pulmonary arterial systolic pressure (PASP): mild (36≤ PASP <50 mmHg); moderate (50≤ PASP <70 mmHg) and severe (PASP ≥70 mmHg).

Results: Dyspnea (93.51%) was the most common symptom. Hemoptysis observed in the severe group (6.42%) was significantly higher than the other two groups (P<0.05). COPD (78.35%), lung bullae (44.16%), tuberculosis (including obsolete pulmonary tuberculosis) (38.82%), and bronchiectasis (30.45%) were frequently present. Mild group occupied the highest proportion (84.7%) in COPD, while severe group occupied the highest proportion (19.3%) in pulmonary embolism (P<0.01). Age, partial pressure of oxygen (PaO2), hematocrit (HCT), partial pressure of carbon dioxide (PaCO2), increase of N-terminal pro brain natriuretic peptide (NT-proBNP) and right ventricular (RV) diameter (>20 mm) were associated with moderate-to-severe PH, while RV [odds ratio (OR) =3.53, 95% CI, 2.17-5.74], NT-proBNP (OR=2.44, 95% CI, 1.51-3.95), HCT (OR=1.03, 95% CI, 1.00-1.07) and PaCO2 (OR=1.01, 95% CI, 1.00-1.03) were independent risk factors.

Conclusions: PH related to respiratory diseases is mostly mild to moderate, and the severity is associated with the category of respiratory disease. Increased HCT can be an independent risk factor for PH related to chronic respiratory diseases.

Keywords: Pulmonary hypertension; clinical features; respiratory diseases; risk factors.

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Conflict of interest statement

Conflicts of Interest: The authors have no conflicts of interest to declare.

References

    1. Farber HW, Loscalzo J. Pulmonary arterial hypertension. N Engl J Med 2004;351:1655-65. 10.1056/NEJMra035488 - DOI - PubMed
    1. Galiè N, Torbicki A, Barst R, et al. Guidelines on diagnosis and treatment of pulmonary arterial hypertension. The Task Force on Diagnosis and Treatment of Pulmonary Arterial Hypertension of the European Society of Cardiology. Eur Heart J 2004;25:2243-78. 10.1016/j.ehj.2004.09.014 - DOI - PubMed
    1. Montani D, Günther S, Dorfmüller P, et al. Pulmonary arterial hypertension. Orphanet J Rare Dis 2013;8:97. 10.1186/1750-1172-8-97 - DOI - PMC - PubMed
    1. Santos S, Peinado VI, Ramírez J, et al. Characterization of pulmonary vascular remodelling in smokers and patients with mild COPD. Eur Respir J 2002;19:632-8. 10.1183/09031936.02.00245902 - DOI - PubMed
    1. Rich S, Dantzker DR, Ayres SM, et al. Primary pulmonary hypertension. A national prospective study. Ann Intern Med 1987;107:216-23. 10.7326/0003-4819-107-2-216 - DOI - PubMed