The modified Konno procedure to treat obstructive hypertrophic cardiomyopathy (HCM) has not been widely applied because the early and late results of extended septal myectomy have been excellent. In general, extended septal myectomy has been the criterion standard for patients with symptoms of all ages, including children with HCM refractory to medical therapy. With that said, the surgical management of HCM in children continues to be a challenge, particularly for those with Noonan syndrome. Laredo and colleagues1 are to be congratulated on their results, published in this issue of the Journal, of a series of 79 children who underwent a modified Konno procedure as a strategy to treat obstructive HCM.
