Objective To observe whether the head-chest leads electrocardiogram (HCECG) is better than the routine 12-leads electrocardiogram (RLECG) in different diagnosis of narrow QRS complex tachycardias.
目的观察在窄qrs波心动过速鉴别诊断时，头胸导联心电图是否优于常规12导联心电图。
Objective To observe whether the head-chest leads electrocardiogram (HCECG) is better than the routine 12-leads electrocardiogram (RLECG) in different diagnosis of narrow QRS complex tachycardias.
目的观察在窄qrs波心动过速鉴别诊断时，头胸导联心电图是否优于常规12导联心电图。
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