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This video clip two-dimensional transthoracic echocardiography showing parasternal long-axis view. Lower arrowhead shows a linear echo in the left atrium resembling a line or pacemaker but this patient does not have any catheter or pacemaker in the left atrium. This linear echo is a reverberatory artifact from a pacemaker located in the right ventricle (RV, upper arrowhead). (AV: aortic valve; LA: left atrium; LV: left ventricle).
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