Gaita F, Bocchiardo M, Asteggiano R, Chiecchio A, Rosettani E, Brusca A
G Ital Cardiol. 1984 Apr;14(4):229-33.
Spontaneous variability of premature ventricular complexes was evaluated by 72 hour continuous ambulatory electrocardiographic monitoring in 38 patients. Nineteen patients had coronary artery disease and 19 subjects had no documented signs of cardiac disease. Using multifactorial analysis of variance we determined the minimal percent reduction of premature ventricular complexes frequency that could not be ascribed to spontaneous variability alone in both single subject and in groups of 10 and 19 individuals and analyzed the difference between the two groups of ischemic and healthy patients. Our results show that in each subject with or without coronary artery disease the minimal reduction of premature ventricular complexes is similar: 71% and 72% respectively. On the other hand when the two groups were compared the percentage of reduction was 49% in healthy subjects and 40% in patients with coronary artery disease. Spontaneous variability of premature ventricular complexes decreases as the period of monitoring lengthens; however the improvement obtained with longer electrocardiographic monitoring doesn't justify the prolongation of the examination beyond 24 hours.
通过72小时动态心电图监测评估了38例患者室性早搏的自发变异性。19例患者患有冠状动脉疾病，19例受试者无心脏病的记录迹象。我们采用多因素方差分析，确定了在单例受试者以及10例和19例个体组中，不能单纯归因于自发变异的室性早搏频率的最小降低百分比，并分析了缺血性患者和健康患者两组之间的差异。我们的结果表明，在每例有或无冠状动脉疾病的受试者中，室性早搏的最小减少量相似：分别为71%和72%。另一方面，当比较两组时，健康受试者的减少百分比为49%，冠状动脉疾病患者为40%。室性早搏的自发变异性随着监测时间的延长而降低；然而，延长心电图监测所获得的改善并不足以证明检查时间超过24小时是合理的。
