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Figure 2: (a) Continuous Doppler imaging from apical five-chamber view, at 3 weeks of age, showing a peak gradient of 23 mmHg and a mean gradient of 13 mmHg across the aortic valve. (b) Continuous Doppler imaging at 3 months of age, showing a peak gradient of 134 mmHg and a mean gradient of 69 mmHg across the aortic valve. (c) Postballoon valvuloplasty showing a peak gradient of 29 mmHg and a mean gradient of 11 mmHg

Figure 2: (a) Continuous Doppler imaging from apical five-chamber view, at 3 weeks of age, showing a peak gradient of 23 mmHg and a mean gradient of 13 mmHg across the aortic valve. (b) Continuous Doppler imaging at 3 months of age, showing a peak gradient of  134 mmHg and a mean gradient of 69 mmHg across the aortic valve. (c) Postballoon valvuloplasty showing a peak gradient of 29 mmHg and a mean gradient of 11 mmHg