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KMID : 1011920120130030028
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International Journal of Arrhythmia
2012 Volume.13 No. 3 p.28 ~ p.34
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Familial Trifascicular Block with Autosomal Dominant Inheritance
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Shin Dae-Hee
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Abstract
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A 29-year-old man presented to our hospital with dizziness and a history of recurrent syncopal episodes. His mother and 2 uncles had undergone permanent pacemaker implantation several years ago. At presentation, his heart rate was 49 bpm. Electrocardiography (ECG) indicated atrial flutter with right bundle branch block (RBBB) and left anterior fascicular block (LAFB). Twenty-four hour Holter monitoring showed ventricular pause up to 16 seconds during syncope. Radiofrequency catheter ablation was performed for atrial flutter. An additional ECG indicated a trifascicular block (RBBB, LAFB, and first-degree AV block). He then underwent permanent pacemaker implantation. ECG results of the patient's brother and sister also indicated a trifascicular block, and the family pedigree showed autosomal dominant inheritance.
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KEYWORD
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atrial flutter, familial heart block, trifascicular block
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Listed journal information
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