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a) Normal parasternal long-axis view.
a) Normal parasternal long-axis view. Note that the right ventricle is less than one third of the size of the left ventricle. b) Parasternal long-axis view in pulmonary hypertension (PH). Severely dilated right ventricle with hypertrophy of the moderator band and the right ventricular free wall. The left ventricular cavity is small due to chronic right ventricular pressure overload. c) Normal parasternal long-axis view of the right ventricular outflow tract (RVOT) showing the main pulmonary trunk, branches of the pulmonary artery and the pulmonary valve. d) Parasternal long-axis view of the RVOT in PH showing the dilated pulmonary artery and branches. e) Normal apical four-chamber view. f) Apical four-chamber view in PH showing marked right ventricular dilation and hypertrophy. Luke S. Howard et al. Eur Respir Rev 2012;21: ©2012 by European Respiratory Society
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