first degree av block
一级风挡块
以上为机器翻译结果，长、整句建议使用 人工翻译 。
There was first-degree AV block in 5 patients (2.7%) documented by electrocardiogram and in 9 patients(7.6%) revealed during Holter monitoring.
一度房室阻滞经心电图证实为5例（2.7%），经动态心电图监测为9例（7.6%）。
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