患者,女,31岁,阵发性心悸4年,发作时按摩颈动脉窦心悸可突然终止。发作时心电图示:心室率188次/分,逆行P波,QRS波群形态与时限正常。该患者最可能的诊断是
A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.
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