DyspneaPulmonary Disease, Chronic ObstructiveRespiratory Function TestsSeverity of Illness IndexForced Expiratory VolumeExercise ToleranceDyspnea, ParoxysmalSymptom AssessmentTreatment OutcomeQuality of LifeQuestionnairesDepressionSpirometryCoughVital CapacityProspective StudiesExercise TestLung Diseases, ObstructiveAsthmaAirway ObstructionFollow-Up StudiesRespiratory MusclesAnxietyRadiography, ThoracicFatigueTime FactorsBronchodilator AgentsTomography, X-Ray ComputedLungRespiration DisordersInspiratory CapacityBreathing ExercisesAcute DiseaseFatal OutcomeCross-Sectional StudiesPsychiatric Status Rating ScalesBehavioral SymptomsPrevalenceRespiratory SoundsLung DiseasesRisk FactorsHeart FailureScopolamine DerivativesRetrospective StudiesPalliative CareOxygen Inhalation TherapyLung Diseases, InterstitialChronic DiseaseHemoptysisBronchial DiseasesRespiratory Tract DiseasesLung Volume MeasurementsHeart NeoplasmsPainDepressive DisorderChest PainAffective SymptomsBronchial Provocation TestsRespiratory MechanicsActivities of Daily LivingOccupational DiseasesBronchoscopyTracheal DiseasesTracheal NeoplasmsLongitudinal StudiesPredictive Value of TestsInhalationHealth StatusNatriuretic Peptide, BrainAlbuterolAdministration, InhalationPrognosisPerceptionWork of BreathingPulmonary EmphysemaPsychophysiologic DisordersComorbidityPulmonary Diffusing CapacityAge FactorsCohort StudiesWalkingReproducibility of ResultsPulmonary EmbolismMaximal Voluntary VentilationPericardial EffusionRespirationResidual VolumeStress Disorders, Post-TraumaticRegression AnalysisPeak Expiratory Flow RateSex FactorsSensationPsychometricsOccupational ExposureStatistics, NonparametricStress, PsychologicalTotal Lung CapacityExercise TherapyDisease ProgressionCryptogenic Organizing Pneumonia