We mersured and analysed the QT dispersion (QTd) of electrocardiogram in 94 patients with chronic congestive heart failure (CHF) and 50 healthy person.

• 测量了心脏病所致的慢性充血性心力衰竭（CHF）患者（94例）及健康人（50例）的心电图QT间期离散度（QTd），并进行了对比分析。