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  • Title: His-bundle electrogram in the convalescent stage of inferior myocardial infarction complicated with complete A-V block.
    Author: Aizawa Y, Hayashi S, Hosokawa O, Watanabe K, Ozawa T, Shibata A, Takeuchi Y.
    Journal: J Electrocardiol; 1982 Apr; 15(2):127-30. PubMed ID: 7069328.
    Abstract:
    Twelve patients with inferior wall myocardial infarction complicated with complete atrioventricular block during the acute stage were studied. The His-bundle electrogram was studied in the convalescent stage at an average of 6 months after the acute attack. The age of the patients was 62 +/- 16 years. The width of the QRS complex was within the normal range and the PR interval was less than 200 msec. AH time was 74 +/- 18 msec (mean +/- SD). No split H activity was observed. HV time however, was significantly prolonged in the 12 patients; 54 +/- 12 msec vs. 42 +/- 9 msec in the control group (p less than 0.02). Five patients had HV time equal to or more than 60 msec. Intra-His block was suggested to exist in a high frequency in the patients who had previous complete AV block during the acute stage of myocardial infarction of the inferior wall.
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