title: Graded balloon atrial septostomy in severe pulmonary hypertension.
authors.forename: R
authors.initials: R
authors.lastname: Tandon
mesh_terms: D002404:Catheterization / Q000009:adverse effects / Q000379:methods*; D006325:Heart Atria / Q000601:surgery; D006346:Heart Septum / Q000601:surgery*; D006801:Humans; D006976:Hypertension, Pulmonary / Q000601:surgery*; D012720:Severity of Illness Index