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These are two sets of chest x-rays from a patient with a prosthetic mitral valve, a tricuspid annuloplasty ring, and a VVI.R pacemaker. The "before" x-rays were taken because of a poor pacing threshold three weeks after implantation of the pacemaker. The "after" x-rays were taken after repositioning the ventricular lead and obtaining an excellent pacing threshold. |
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