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. 2021 Aug 3;21:372. doi: 10.1186/s12872-021-02165-5

Fig. 4.

Fig. 4

Echocardiogram. A Parasternal long-axis view on admission. B Doppler ultrasonic spectrum of LVOT on admission. C Transesophageal echocardiograph showed mitral valve prolapse and no vegetation. D Dynamic change of LVOT gradient and peak velocity. This patient underwent alcohol septal ablation on March 22, 2011 and permanent pacemaker on January 19, 2020. LVOT left ventricular outflow tract, ASA alcohol septal ablation, NM not measured, AVB atrioventricular block, TPM temporary pacemaker, PM pacemaker, PPM permanent pacemaker