Cases reported "Dextrocardia"

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1/2. Percutaneous balloon valvuloplasty in mirror-image dextrocardia and rheumatic mitral stenosis.

    A 28-year-old woman with mirror-image dextrocardia and severe rheumatic mitral stenosis underwent successful percutaneous balloon mitral valvuloplasty (PBMV). Standard technique was altered to include transseptal catheterization via the left femoral vein and inter-atrial septal puncture with the transseptal needle rotated to a 7 o'clock position. The predilatation transmitral gradient (mean) of 16 mmHg decreased to 5 mmHg following PBMV. The valve area improved from 1.0 cm2 to 2.6 cm2. There were no complications. This case illustrates that transseptal catheterization can be accomplished safely in patients with unusual cardiac anatomy and mitral valvuloplasty can be performed in patients with mirror-image dextrocardia and rheumatic mitral stenosis.
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2/2. Radiofrequency catheter ablation of left atrial tachycardia originating within the pulmonary vein in a patient with dextrocardia.

    A case is presented of a 38-year-old male with dextrocardia in whom radiofrequency current ablation of an incessant atrial tachycardia originating within the infero-lateral pulmonary vein was achieved. Activation mapping with detection of the earliest atrial activation was used for identification of the arrhythmogenic focus. In addition to fluoroscopy, transesophageal echocardiography was used for catheter guidance during the transseptal puncture. The present experience suggests that location of an arrhythmogenic focus within the pulmonary venous system should be considered whenever early atrial activation during ectopic atrial tachycardia is recorded at the junction between the left atrium and the pulmonary veins.
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