Tan Yuyang

ALT a |Transthoracic echocardiography in a patient with acute-on-chronic pulmonary embolism from an apical four-chamber view showing a severely dilated right ventricle (RV), and b | increased pulmonary systolic pressure estimated by applying the simplified Bernoulli equation using the measured tricuspid regurgitation peak velocity (50 mmHg; asterisk). c | Parasternal short axis view showing RV and left ventricle (LV) surrounded by a circumferential pericardial effusion (asterisk) that induced tamponade. d | Transoesophageal echocardiography (transgastric short-axis view) of a patient aged 42 years admitted with cardiogenic shock presenting with ST-segment elevation in the anterolateral electrocardiogram leads. Coronary angiography showed critical three-vessel coronary artery disease. The LV is severely dilated, and there is evidence of previous myocardial infarction, shown by the presence of thinned and akinetic myocardium (dotted red line). LA, left atrium; RA, right atrium.