PMC5322508_01
a, b, c. Day 1: Complete AV dissociation; atrial rate of 166/minute, ventricular rate of 61/minute, QRS duration of 0.084 seconds (occasionally >0.08 seconds), corrected QT interval of 0.43 seconds (a). Day 15: 24-hour Holter recording Wenckebach type II AV block (b). Sixteen month follow-up visit: Normal sinus rhythm (c).
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The patient was confirmed to have CAVB by 12-lead electrocardiography (ECG) (MAC 1600, GE Healthcare, USA) and 24-hour Holter monitorization (Life card CF, Del Mar Reynolds Medical, United Kingdom) (Figure 1a). AVB (Figure 1b). As the patient's overall condition and vital signs were stable with normal cardiac functions, the patient was discharged. At the sixth month follow-up visit, both Holter monitoring and the ECG (Figure 1c) indicated a normal sinus rhythm.