Early surgical intervention in culture-negative endocarditis of the aortic valve complicated by abscess in an infant: A case report

Figure 1 Preoperative color Doppler echocardiograms. A: Preoperative color Doppler echocardiogram, acquired on the 9^th day (May 20, 2019), revealing abscess with perforation, minor aortic regurgitation, and minor to moderate pericardial effusion (arrow); B and C: Preoperative color Doppler echocardiograms, acquired on May 13, 2019, revealing that there was vegetation attaching on the left ventricular surface of the left coronary aortic valve (arrow). The measured value of left ventricular systolic function was normal.