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| Assessment of right ventricular circumferential strain in pulmonary arterial hypertension using speckle tracking echocardiography |
| PENG Yu-dong1, PENG Hong-tao2 |
1.Department of Ultrasound, The First Affiliated Hospital of Yangtze University, Jingzhou Hubei 434000, China;
2. Health Management Center, Jiangling County People’s Hospital, Jingzhou Hubei 434100, China |
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Abstract Objective: To explore right ventricular circumferential strain in pulmonary arterial hypertension(PAH) using speckle tracking echocardiography. Methods: The subjects are PAH patients and healthy controls. Right ventricular fractional area change(RVFAC) was calculated in the apical four-chamber view. Right ventricular short-axis two-dimensional images were aquired. Right ventricular circumferential strain(ε) was collected in the QLAB9.0 workstation. The difference of ε between the two groups was analyzed. Results: Compared with the control group, PAH patients showed decreased circumferential strain in anterior wall, free wall, inferior wall of right ventricle in the basal level, free wall of right ventricle in the middle level, and anterior wall of right ventricle in the apical level. Also, the global circumferential strain of right ventricle was reduced(P<0.05). Right ventricular circumferential strain showed a modest correlation with RVFAC. Conclusion: Right ventricular circumferential strain is decreased in PAH patients, demonstrating that right ventricular short axis contractility of PAH patients is reduced. There is modest correlation between right ventricular circumferential strain and RVFAC.
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Received: 16 January 2018
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2019, Vol. 30 
