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Left ventricular function in pulmonary hypertension

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Abstract

To elucidate left ventricular function in pulmonary hypertension, we measured parameters of left ventricular as well as right ventricular function by echocardiography in 11 patients with pulmonary hypertension (idiopathic pulmonary artery hypertension in 4, chronic thromboembolic pulmonary hypertension in 5, and other pulmonary hypertension in 2). The percent change in these parameters 6 months after treatment with pulmonary artery vasodilators (beraprost in 8 and sildenafil in 3) was assessed. There was a correlation between the relative change in right ventricular systolic pressure (RVSP) and the relative changes in left ventricular outflow tract velocity–time integral (r = −0.730, P = 0.011) and mitral valve velocity–time integral (r = −0.621, P = 0.041). However, there was no correlation between the relative change in RVSP and the relative changes in left ventricular ejection fraction, left ventricular diastolic dimension, and systolic blood pressure. The relative change in RVSP was also correlated with the relative change in early diastolic myocardial velocity at the medial mitral annulus (r = −0.675, P = 0.023). Reduction of RVSP by pulmonary artery vasodilators might increase left ventricular preload, leading to an increase in stroke volume. Right ventricular load reduction might improve left ventricular diastolic function in patients with pulmonary hypertension, possibly through altered interventricular septal performance.

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Authors and Affiliations

  1. Department of Cardiovascular Medicine, Dokkyo Medical University, 880 Kitakobayashi, Mibu, 321-0293, Tochigi, Japan

    Hirohisa Amano, Shigeru Toyoda, Takuo Arikawa, Shu Inami, Naoyuki Otani, Yu Nishi, Yoshiyuki Kitagawa, Isao Taguchi, Shichiro Abe & Teruo Inoue

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  1. Hirohisa Amano
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  2. Shigeru Toyoda
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  3. Takuo Arikawa
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  4. Shu Inami
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  5. Naoyuki Otani
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  6. Yu Nishi
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  7. Yoshiyuki Kitagawa
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  8. Isao Taguchi
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  9. Shichiro Abe
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  10. Teruo Inoue
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Correspondence to Shigeru Toyoda.

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Amano, H., Toyoda, S., Arikawa, T. et al. Left ventricular function in pulmonary hypertension. Heart Vessels 28, 505–509 (2013). https://doi.org/10.1007/s00380-012-0272-3

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  • DOI: https://doi.org/10.1007/s00380-012-0272-3

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