Nirei T
Department of Cardiology, Heart Institute of Japan, Tokyo Women's Medical College.
Nihon Rinsho. 1995 Jan;53(1):139-44.
Body surface QRST isointegral maps in patients with long QT syndrome (LQTS) often show multipolar distribution. We recorded body surface maps in eight cases with LQTS. There were same day variations in the distribution of multipolarity and unipolarity in two of seven cases, and day-to-day variation in one of seven cases. In two of four cases, the distribution of the map changed from unipolarity to multipolarity following hand-pushing exercise. When two patients with same day variation or day-to-day variation were administered beta-adrenergic blocking agents, their QRST isointegral maps all showed unipolar distribution and had no variations. These findings suggest that QRST isointegral map can be a useful method for predicting the effectiveness of beta-adrenergic blocking drugs in idiopathic long QT syndrome.
长QT综合征（LQTS）患者的体表QRST等积分图常显示多极分布。我们记录了8例LQTS患者的体表图。7例中有2例的多极性和单极性分布存在同一天内的变化，7例中有1例存在每日变化。4例中有2例在手动推挤运动后，体表图的分布从单极性变为多极性。当对有同一天内变化或每日变化的2例患者给予β-肾上腺素能阻滞剂时，他们的QRST等积分图均显示单极性分布且无变化。这些发现提示，QRST等积分图可能是预测β-肾上腺素能阻滞剂对特发性长QT综合征疗效的一种有用方法。
