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Survival and prognostic factors in patients with connective tissue disease-associated pulmonary hypertension diagnosed by echocardiography: results from a Korean nationwide registry

Authors
Kang, Kwi YoungJeon, Chan HongChoi, Sung JaeYoon, Bo YoungChoi, Chan-BumLee, Chang HoonSuh, Chang-HeeLee, Choong WonCho, Chul SooNam, Eon JeongKoh, Eun-MiKim, Ho-YounChoi, Hyo JinKim, Hyoun-AhJun, Jae-BumLee, JaejoonKim, JinseokJi, Jong DaeMin, Jun KiKim, Ki JoShin, KichulSo, Min WookKwon, Seong RyulKim, Seong-KyuNah, Seong-SuKwok, Seung-KiLee, Soo-KonLee, Sung WonPark, Sung-HwanPark, WonPark, Yong-BeomLee, Young HoLee, Shin-SeokYoo, Dae Hyun
Issue Date
9월-2017
Publisher
WILEY
Keywords
connective tissue disease; pulmonary hypertension; survival; systemic lupus erythematosus; systemic sclerosis
Citation
INTERNATIONAL JOURNAL OF RHEUMATIC DISEASES, v.20, no.9, pp.1227 - 1236
Indexed
SCIE
SCOPUS
Journal Title
INTERNATIONAL JOURNAL OF RHEUMATIC DISEASES
Volume
20
Number
9
Start Page
1227
End Page
1236
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/82448
DOI
10.1111/1756-185X.12645
ISSN
1756-1841
Abstract
ObjectivesPulmonary arterial hypertension (PAH) is a major cause of mortality in connective tissue disease (CTD). The survival rates and mortality-predictive factors of a nationwide registry of Korean patients with CTD-PH measured by echocardiography were determined. MethodsPatients with CTD-PH were enrolled between April 2008 and December 2012. Hemodynamic parameters and clinical data (WHO-functional class [FC], organ involvement, laboratory tests and treatment agents) were recorded. Survival rates were calculated by using the Kaplan-Meier method. Mortality-associated factors were examined by Cox proportional hazards regression analysis. ResultsIn total, 174 incident PH cases (61 with systemic lupus erythematosus, 50 with systemic sclerosis, 10 with mixed CTD, 22 with rheumatoid arthritis (RA) and 31 with other CTDs) were diagnosed by Doppler echocardiography. Of these, 25 (14%) died during the 3.82.7year follow-up period after PH diagnosis. The 1- and 3-year survival rates were 90.7% and 87.3%, respectively. Compared to the other CTD-PHs, RA-PH had the lowest survival rates (56% 3year survival; P=0.022). Multiple regression analysis revealed that low diffusion capacity of carbon monoxide (DLCO), pleural effusion and diabetes mellitus were poor prognostic factors (P=0.008, 0.04 and 0.009, respectively). Anti-UI-RNP (ribonucleoprotein) antibody positivity was protective (P=0.022). In patients with WHO-FC III/IV, patients who received vasodilators had lower mortality than those who did not (P=0.038). ConclusionsIn Korean patients with CTD-PH, the 3-year survival rate was 87%. Low diffusion capacity of carbon monoxide (DLCO), pleural effusion and diabetes mellitus were independent poor prognostic factors. Anti-UI-RNP antibody was protective. Prompt PAH-specific vasodilator therapy may improve the survival of patients with severe CTD-PH.
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