PMC5088310_01
Ontogeny of brain natriuretic peptide levels (a) and the peak pressure gradient of the left ventricular outflow tract (b) during the perinatal period.
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BNP level was reduced to 487.7 pg/mL (Figure 1(a)). By postoperative day 7, severe MR had improved to mild and the peak PG of the LVOT had improved to 74.6 mmHg (Figure 1(b)).