European Respiratory Society, 21st Annual Congress, Amsterdam, Hollanda, 24 - 28 Eylül 2011, ss.1
Pulmonaryhypertension(PH)iscommonlyseeninpatientswithinterstitiallung
disease(ILD),andisassociatedwithaworseprognosis.Theaimofthisstudywas
to determinetheprevalenceandcharacteristicsofPHinpatientswithILD.
Demographicandclinicalcharacteristics,physiologicalstudies,six-minute-
walkingtest(6MWT)andhighresolutioncomputedtomography(HRCT)results
wereprospectivelycollected,andcomparedbetweenpatientswithandwithout
PH. Pulmonaryhypertensionwasdefinedby rightheartcatheterizationasmean
pulmonaryarterypressure > or =25mmHgandpulmonaryarteryocclusion
pressure < or =15mmHg.
Thestudycohortconsistedof30patients. Thefinaldiagnosesofthesepatientswere
idiopatic pulmonaryfibrosis(n=15),asbestosis(n=3),chronicsarcoidosis(n=5),
chronichypersensitivitypneumonitis(n=3),andun-classified(n=4).Fourteenpa-
tients (46.6%)werefoundtohavePH.Themeanpulmonaryarterialpressurein
PH patientswas32.9±6.8mmHg,and18.2±3.5mmHginnon-PHpatients
(p <0.001).Whencomparedwithnon-PHsubjects,patientswithPHexhibited
lowersix-minute-walkdistance(415±41 mvs.260±95 m,p <0.001).Inaddition
to these,patientswithPHhadthefollowingclinicalcharacteristics:advanced
HRCTfibrosisscore,decreasedoxygensaturationduring6MWT,anddecreased
percentageofpredictedFVC, percentageofpredictedFEV1, andpercentageof
predicteddiffusingcapacityforcarbon monoxide. Ourfindingsrevealedthatpul-
monaryhypertensionoccurscommonlyinILD.Pulmonaryhypertensionplaysan
importantandunderappreciatedroleinthe functionalstatusofpatientswithILD.