title: Clinical and hemodynamic characteristics of pulmonary hypertension associated with interstitial lung disease in China.
abstract: BACKGROUND
  Pulmonary hypertension (PH) is an important complication of interstitial lung disease (ILD). The aim of the present study was to investigate characteristics and prognosis of ILD associated PH in a predominantly Chinese patient cohort.
  
  
  METHODS
  Consecutive patients with ILD associated PH, confirmed by right heart catheterization at shanghai pulmonary hospital were included in the study. Characteristics at baseline and during follow-up, as well as survival, were analyzed.
  
  
  RESULTS
  This observational study was conducted in 26 patients with a mean age of 60.0 ± 12.2 y old. The 6-min walking distance was 335.0 ± 190.9 m. The mean pulmonary arterial pressure (PAP) was 42.9 ± 10.9 mmHg, cardiac output was 4.4 ± 1.0 L/min, and pulmonary vascular resistance (PVR) was 8.6 ± 4.1 Wood Units. The mean PAP was ≥35 mmHg in 69.2% of cases. There were no difference in lung function parameters between ILD with PH and ILD without PH. The overall survival rate was 92% at 1 y, 82% at 3 y, and 62% at 5 y. PVR was the only variable significantly associated with death.
  
  
  CONCLUSIONS
  Severe hemodynamic impairment along with PH can occur in patients with ILD. These patients have more severely impaired exercise capacity and cardiac function than ILD patients without PH. PVR was the only prognostic factor identified in this group of patients.
authors.affiliation: Department of Pulmonary Circulation, Shanghai Pulmonary Hospital, Tongji University, School of Medicine, Shanghai, 200433, People's Republic of China.
authors.forename: Lan
authors.initials: L
authors.lastname: Wang
authors.affiliation: Department of Pulmonary Circulation, Shanghai Pulmonary Hospital, Tongji University, School of Medicine, Shanghai, 200433, People's Republic of China.
authors.forename: Qin-Hua
authors.initials: QH
authors.lastname: Zhao
authors.affiliation: Department of Pulmonary Circulation, Shanghai Pulmonary Hospital, Tongji University, School of Medicine, Shanghai, 200433, People's Republic of China.
authors.forename: Bigyan
authors.initials: B
authors.lastname: Pudasaini
authors.affiliation: Department of Pulmonary Circulation, Shanghai Pulmonary Hospital, Tongji University, School of Medicine, Shanghai, 200433, People's Republic of China.
authors.forename: Rong
authors.initials: R
authors.lastname: Jiang
authors.affiliation: Department of Pulmonary Circulation, Shanghai Pulmonary Hospital, Tongji University, School of Medicine, Shanghai, 200433, People's Republic of China.
authors.forename: Su-Gang
authors.initials: SG
authors.lastname: Gong
authors.affiliation: Department of Pulmonary Circulation, Shanghai Pulmonary Hospital, Tongji University, School of Medicine, Shanghai, 200433, People's Republic of China.
authors.forename: Jing
authors.initials: J
authors.lastname: He
authors.affiliation: Department of Pulmonary Circulation, Shanghai Pulmonary Hospital, Tongji University, School of Medicine, Shanghai, 200433, People's Republic of China.
authors.forename: Ping
authors.initials: P
authors.lastname: Yuan
authors.affiliation: Department of Pulmonary Circulation, Shanghai Pulmonary Hospital, Tongji University, School of Medicine, Shanghai, 200433, People's Republic of China.
authors.forename: Jin-Ming
authors.initials: JM
authors.lastname: Liu
mesh_terms: D000368:Aged; D006328:Cardiac Catheterization / Q000379:methods; D002302:Cardiac Output / Q000502:physiology; D002681:China / Q000453:epidemiology; D004452:Echocardiography / Q000379:methods; D005260:Female; D006439:Hemodynamics / Q000502:physiology*; D006801:Humans; D006976:Hypertension, Pulmonary / Q000401:mortality / Q000503:physiopathology*; D008168:Lung / Q000098:blood supply / Q000000981:diagnostic imaging / Q000503:physiopathology*; D017563:Lung Diseases, Interstitial / Q000150:complications* / Q000000981:diagnostic imaging / Q000401:mortality / Q000503:physiopathology; D008297:Male; D008875:Middle Aged; D011379:Prognosis; D012129:Respiratory Function Tests / Q000379:methods; D012189:Retrospective Studies; D015996:Survival Rate; D015898:Tomography Scanners, X-Ray Computed / Q000592:standards; D014655:Vascular Resistance / Q000502:physiology*; D000070857:Walk Test / Q000379:methods
keywords: hemodynamic; interstitial lung disease; pulmonary hypertension; survival