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A 70-year-old male patient with a myocardial infarction, 3 months previously, happened to be wearing a Holter monitor at cardiac arrest during micturition. The patient had ventricular fibrillation (VF) and was successfully resuscitated by means of defibrillation. Analysis of the Holter tape revealed atrial fibrillation and secondary ventricular premature beats (VPB), i.e., VPBs dependent upon a relatively long interval between the two preceding heartbeats. The VF was preceded by an especially long R-R interval (1.45 sec) following a run of especially short R-R intervals implying the sharpest deceleration of the ventricular rate during 1 hour Holter recording preceding the cardiac arrest. A peculiar large alteration of the T wave configuration was also found to precede the VF.
Nilsson et al. (Tue,) studied this question.
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