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体位性心动过速综合征(postural tachycardia syndrome,POTS)是指存在直立不耐受(OI)的症状,并且患者在直立或直立倾斜试验(HUTT)10min内的心率比卧位时增加≥
Postural tachycardia syndrome (POTS) is defined as the presence of orthostatic intolerance (OI), and the patient’s heart rate increases 10% more during the upright or upright tilt test (HUTT) than in the supine position