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Clinical outcomes of exercise-induced pulmonary hypertension in subjects with preserved left ventricular ejection fraction: implication of an increase in left ventricular filling pressure during exercise

 Chi Young Shim  ;  Sung-Ai Kim  ;  Donghoon Choi  ;  Woo-In Yang  ;  Jin-Mi Kim  ;  Sun-Ha Moon  ;  Hyun-Jin Lee  ;  Sungha Park  ;  Eui-Young Choi  ;  Namsik Chung  ;  Jong-Won Ha 
 Heart, Vol.97(17) : 1417-1424, 2011 
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OBJECTIVE: To investigate clinical outcomes of exercise-induced pulmonary hypertension (PH) and implications of an increase in left ventricular (LV) filling pressure during exercise in subjects with preserved LV ejection fraction. DESIGN: Longitudinal follow-up study. SETTING: Subjects who were referred for diastolic stress echocardiography. PATIENTS AND METHODS: The ratio of transmitral and annular velocities (E/Ea) and pulmonary artery systolic pressure (PASP) at rest and during exercise were measured in 498 subjects (57±11 years; 201 male). Exercise-induced PH was defined as present if PASP ≥50 mm Hg at 50 W of exercise, and an increase in LV filling pressure during exercise was present if E/Ea ≥15 at 50 W. MAIN OUTCOME MEASURES: A combination of major cardiovascular events and any cause of death. RESULTS: During a median follow-up of 41 months, there were 14 hospitalisations and four deaths. Subjects with exercise-induced PH had significantly worse clinical outcomes than those without (p=0.014). Subjects with exercise-induced PH associated with an increase in E/Ea during exercise had significantly worse outcomes than other groups (p<0.001). However, prognosis was similar between subjects with exercise-induced PH without an increase in E/Ea and those without exercise-induced PH. In subjects with exercise-induced PH, E/Ea at 50 W was an independent predictor of adverse outcomes (HR 1.37; 95% CI 1.02 to 1.83; p=0.036). CONCLUSIONS: Exercise-induced PH provides prognostic information in subjects with preserved LV ejection fraction. The excess risk of exercise-induced PH is restricted to subjects with an increase in estimated LV filling pressure during exercise.
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1. Journal Papers (연구논문) > 1. College of Medicine (의과대학) > Dept. of Internal Medicine (내과학교실)
Yonsei Authors
김성애(Kim, Sung Ai)
박성하(Park, Sung Ha) ORCID logo https://orcid.org/0000-0001-5362-478X
심지영(Shim, Chi Young) ORCID logo https://orcid.org/0000-0002-6136-0136
양우인(Yang, Woo In)
정남식(Chung, Nam Sik)
최동훈(Choi, Dong Hoon) ORCID logo https://orcid.org/0000-0002-2009-9760
최의영(Choi, Eui Young) ORCID logo https://orcid.org/0000-0003-3732-0190
하종원(Ha, Jong Won) ORCID logo https://orcid.org/0000-0002-8260-2958
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