Methods Two hundred and seventeen patients with PSVT diagnosed by ECG were evaluated with the esophageal ECG (ECGe) and different intercostal lead V?1 (DIV?1) during the episode of the tachycardia.

• 方法217例ECG诊断PSVT患者在心动过速发作状态下,经食管不同水平(ECGe)和不同肋间的V1(DIV1)导联记录心动过速发作的心电图;