Abstract
It has repeatedly been suggested that leaving a small residual gradient in the right ventricular outflow tract (RVOT) after tetralogy of Fallot repair may be beneficial because it may prevent late right ventricular dilatation.1-3 We demonstrated in the past that patients left with peak gradients greater than 36 mm Hg have a 10-fold higher risk of reoperation than those with lower gradients.1 The fate of those patients left with moderate gradients (≥36 mm Hg) is still unclear.1-4
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