title: Exercise-induced pulmonary hypertension by stress echocardiography: Prevalence and correlation with right heart hemodynamics.
abstract: OBJECTIVE
  The aim of this study was to determine the prevalence of exercise-induced pulmonary hypertension (EIPH) in consecutive subjects referred for stress echocardiography for chest pain or shortness of breath and correlate echocardiographic diagnosis of EIPH with hemodynamics at right heart catheterization (RHC).
  
  
  BACKGROUND
  Elevated pulmonary pressure can lead to significant morbidity and mortality. EIPH by ehocardiography has been described in patients with connective tissue disease. It's prevalence in the setting of routine clinically indicated stress echocardiography unknown.
  
  
  METHODS
  In a retrospective analysis of 4068 consecutive stress subjects undergoing stress echocardiography, 479 subjects with EIPH were identified. All 479 subjects with EIPH were compared to 479 age and sex matched subjects with normal pulmonary artery pressures post exercise. EIPH was defined as PASP>50mmHg or peak tricuspid regurgitation velocity>3.2m/s. Of 100 patients with EIPH who underwent RHC we identified variables which predicted abnormal hemodynamic findings on RHC.
  
  
  RESULTS
  The prevalence of EIPH in subjects referred for stress echocardiography was 11.7%. A greater proportion of subjects with EIPH were obese or had lung disease or connective tissue disease. Of 100 subjects who underwent RHC, 65 had abnormal results. Age>55years (OR 5.1, p<0.01]) or dilated left atrium (OR 4.4, p=0.02]) were independently associated with abnormal right heart hemodynamics.
  
  
  CONCLUSIONS
  The results demonstrate that 11.7% of patients undergoing clinically indicated stress echocardiography have EIPH. Of those who underwent RHC abnormal hemodynamics were significantly associated with a dilated left atrium or age older than 55years.
authors.affiliation: Thomas Killip Division of Cardiology, Mount Sinai Beth Israel, New York, NY 10003, United States. Electronic address: dmisra@chpnet.org.
authors.forename: Deepika
authors.initials: D
authors.lastname: Misra
authors.affiliation: Thomas Killip Division of Cardiology, Mount Sinai Beth Israel, New York, NY 10003, United States. Electronic address: antekendes@gmail.com.
authors.forename: Ante
authors.initials: A
authors.lastname: Kendes
authors.affiliation: Division of Pulmonary and Critical Care Medicine, Mount Sinai Beth Israel, New York, NY 10003, United States. Electronic address: rsulica@chpnet.org.
authors.forename: Roxana
authors.initials: R
authors.lastname: Sulica
authors.affiliation: Division of Cardiology, East Carolina University, Greenville, NC 27858, United States. Electronic address: Carabellob16@ecu.edu.
authors.forename: Blase
authors.initials: B
authors.lastname: Carabello
mesh_terms: D006328:Cardiac Catheterization; D002637:Chest Pain / Q000175:diagnosis*; D025401:Echocardiography, Stress / Q000009:adverse effects*; D005080:Exercise Test / Q000009:adverse effects*; D005260:Female; D006352:Heart Ventricles / Q000000981:diagnostic imaging* / Q000503:physiopathology; D006439:Hemodynamics; D006801:Humans; D006976:Hypertension, Pulmonary / Q000453:epidemiology* / Q000209:etiology / Q000503:physiopathology; D008297:Male; D008875:Middle Aged; D015995:Prevalence; D011379:Prognosis; D012189:Retrospective Studies; D014481:United States / Q000453:epidemiology; D016278:Ventricular Function, Right / Q000502:physiology*
keywords: Exercise induced pulmonary hypertension; Right heart catheterization; Stress echocardiography