Dupliakov D V, Golovina G A, Sysuenkova E V, Glukhova V L, Gar'kina S V
Kardiologiia. 2012;52(7):61-6.
Study aim was assessment of dynamics of spectral parameters of heart rate variability (HRV) during the Westminster and Italian protocols of tilt-test (TT). We included in this study 114 patients with recurrent vasovagal syncope (VVS). Basing on TT results we distinguished 4 groups of patients: with positive result of the Westminster protocol (WPTT) (group 1, n=30); with negative result of WPTT (group 2, n=23); with positive result of the Italian protocol (IPTT) (group 3, n=44); with negative result of IPTT (group 4, n=11). Control group comprised 14 healthy persons without history of syncope. Spectral parameters of HRV were analyzed in 3 five minutes intervals (before TT in horizontal position, during first and last 5 minutes of orthostasis). Structure of vasovagal responses was similar for all TT protocols used. In lying position in patients of groups 1-3 lower values of LF1 and LF1/HF1 were registered, as well as high values of HF1 compared with the control group and patients with negative results of IPTT. Initial stage of TT in patients with positive result of WPTT (group 1) was characterized by almost twofold increase of LF values (n.u.) and decrease of HF parameters (n.u.) compared with other patients. In the group 1 during the second period.
研究目的是评估在倾斜试验（TT）的威斯敏斯特方案和意大利方案期间心率变异性（HRV）频谱参数的动态变化。本研究纳入了114例复发性血管迷走性晕厥（VVS）患者。根据TT结果，我们将患者分为4组：威斯敏斯特方案（WPTT）结果为阳性的患者（第1组，n = 30）；WPTT结果为阴性的患者（第2组，n = 23）；意大利方案（IPTT）结果为阳性的患者（第3组，n = 44）；IPTT结果为阴性的患者（第4组，n = 11）。对照组包括14名无晕厥病史的健康人。在3个5分钟时间段内分析了HRV的频谱参数（水平位TT前、直立位的前5分钟和最后5分钟）。所有使用的TT方案的血管迷走反应结构相似。与对照组和IPTT结果为阴性的患者相比，第1 - 3组患者卧位时LF1和LF1/HF1值较低，HF1值较高。WPTT结果为阳性的患者（第1组）在TT初始阶段，LF值（n.u.）几乎增加了两倍，HF参数（n.u.）降低，与其他患者相比有差异。在第1组的第二个时间段。
