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Introduction A 22-year-old male was referred for evaluation to our hospital due to frequent episodes of supraventricular tachycardia (SVT) requiring electrical cardioversion and on-going palpitations. Methods and results Tests revealed mesocardia with situs inversus. An electrophysiological study was performed; catheters were guided by fluoroscopy visualizing a completely mirrored image. Diagnosis of a concealed accessory pathway (AP) was made. Radiofrequency catheter ablation (RFCA) was guided by using three-dimensional (3D) mapping system. No new SVT was documented at 6-month follow-up. Conclusion This is the first report of successful RFCA in a concealed AP presentation with mesocardia coexisting with situs inversus.
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Duarte-Sau et al. (2024) studied this question.
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