PMC6524425_01
Electrocardiogram showing left ventricular hypertrophy
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F1
Electrocardiogram showed LV hypertrophy [Figure 1].
Transesophageal echocardiography showing supravalvular membrane (marked by arrow)
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F2
The membrane was confirmed on transesophageal echocardiography [Figure 2].
Left ventricular pressure before balloon dilatation. Left ventricular systolic pressure was 236 mm Hg
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F3
Cardiac catheterization showed systolic LV pressure of 236 mmHg [Figure 3].
Aortic pressure before balloon dilatation. Aortic pressure was 106/60 mmHg
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F4
The aortic systolic pressure was 106 mmHg [Figure 4].
Left ventriculogram (in the left anterior oblique/cranial view) showing membrane at the sinotubular junction
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F5
The position of the membrane was confirmed on left ventriculogram [Figure 5].
Balloon dilatation of the membrane with TYSHAK 16 mm x 40 mm balloon
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F6
TYSHAK 16 mm x 40 mm balloon was used based on the measurement of aortic annulus [Figure 6].
Left ventricular systolic pressure after the procedure. Left ventricular systolic is 130 mmHg
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F7
After inflation, LV systolic pressure reduced to 130 mmHg [Figure 7] and systolic aortic pressure was 116 mmHg with gradient reduced to 14 mmHg from 130 mmHg.