title: Antegrade aortic balloon dilatation through an apical ventriculotomy under echocardiographic control.
authors.forename: C J
authors.initials: CJ
authors.lastname: Ward
authors.forename: G R
authors.initials: GR
authors.lastname: Nunn
authors.forename: G F
authors.initials: GF
authors.lastname: Sholler
mesh_terms: D001024:Aortic Valve Stenosis / Q000628:therapy*; D002404:Catheterization / Q000379:methods*; D004452:Echocardiography; D006801:Humans; D007231:Infant, Newborn; D007235:Infant, Premature, Diseases / Q000628:therapy*; D008297:Male