Polymorphic ventricular tachycardia as the presenting manifestation of Bjork-Shiley mitral prosthesis strut fracture

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      Mechanical failure of Bjork-Shiley (B-S) prosthetic valves is uncommon, and usually presents with cardiogenic shock.1 We report polymorphic ventricular tachycardia (VT) as an unusual presentation of B-S prosthetic valve strut fracture.
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