Table 2 Therapies to relieve outflow tract obstruction
Myectomy
    Trans-aortic1958
    Trans-ventricular1961
    Trans-atrial1963
    Trans-right ventricle1967
Transplant1968
Mitral valve replacement1970
Aortoventriculoplasty1975
Apicoaortic conduit1976
Dual-chamber pacing1992
Percutaneous alcohol septal ablation1994
Pharmacological
    β-adrenergic antagonists1962
    Calcium entry blockers1976
    Disopyramide1982