Utility of corrected QT interval in orthostatic intolerance.

Utility of corrected QT interval in orthostatic intolerance.
复制标题

DOI:
10.1371/journal.pone.0106417
复制
发表时间:
2014
期刊:
影响因子:
3.7
通讯作者:
Kim BJ
Kim BJ
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Kim JB;Hong S;Park JW;Cho DH;Park KJ;Kim BJ

文献摘要

参考文献

被引文献

相似文献

我们进行这项研究是为了确定心电图校正 QT (QTc) 间期是否可以预测直立不耐受 (OI) 期间交感迷走神经平衡的变化。我们回顾了 1,368 名出现 OI 症状的患者,他们接受了心电图和复合自主神经功能测试 (AFT)。对平视倾斜试验呈阳性反应的患者被分为直立性低血压(OH)、神经心源性晕厥(NCS)或直立性心动过速综合征(POTS)组。最终分析共纳入 275 名患者(159 名 OH、54 名 NCS 和 62 名 POTS)。对 OI 症状等级、QTc 间期、QTc 离散度和各项 AFT 测量进行组间比较。 QTc 间期和离散度与 AFT 测量值相关。 OH 患者的 OI 症状等级最严重,NCS 患者的 OI 症状最轻。 OH患者的QTc间期最长(448.8±33.6毫秒),QTc离散度(59.5±30.3毫秒),深呼吸心率反应(HRDB)最低(10.3±6.0次/分钟)和Valsalva比(1.3±0.2)。 POTS 患者在定量促汗轴突反射测试中表现出最短的 QTc 间期(421.7±28.6 毫秒)、最高的 HRDB 值(24.5±9.2 次/分钟)、Valsalva 比(1.8±0.3)以及近端和远端腿部汗量。 QTc 间期与 HRDB (r = −0.443,p<0.001) 和 Valsalva 比 (r = −0.425,p<0.001) 呈负相关。我们发现 OI 患者的 QTc 间期与代表心血管迷走功能的 AFT 值之间呈负相关。我们的研究结果表明,QTc 间期延长可能被认为是检测交感迷走神经平衡改变的生物标志物,尤其是 OH 中的心血管迷走功能障碍。
We performed this study to determine whether electrocardiographic corrected QT (QTc) interval predicts alterations in sympathovagal balance during orthostatic intolerance (OI). We reviewed 1,368 patients presenting with symptoms suggestive of OI who underwent electrocardiography and composite autonomic function tests (AFTs). Patients with a positive response to the head-up tilt test were classified into orthostatic hypotension (OH), neurocardiogenic syncope (NCS), or postural orthostatic tachycardia syndrome (POTS) groups. A total of 275 patients (159 OH, 54 NCS, and 62 POTS) were included in the final analysis. Between-group comparisons of OI symptom grade, QTc interval, QTc dispersion, and each AFT measure were performed. QTc interval and dispersion were correlated with AFT measures. OH Patients had the most severe OI symptom grade and NCS patients the mildest. Patients with OH showed the longest QTc interval (448.8±33.6 msec), QTc dispersion (59.5±30.3 msec) and the lowest values in heart rate response to deep breathing (HRDB) (10.3±6.0 beats/min) and Valsalva ratio (1.3±0.2). Patients with POTS showed the shortest QTc interval (421.7±28.6 msec), the highest HRDB values (24.5±9.2 beats/min), Valsalva ratio (1.8±0.3), and proximal and distal leg sweat volumes in the quantitative sudomotor axon reflex test. QTc interval correlated negatively with HRDB (r = −0.443, p<0.001) and Valsalva ratio (r = −0.425, p<0.001). We found negative correlations between QTc interval and AFT values representing cardiovagal function in patients with OI. Our findings suggest that prolonged QTc interval may be considered to be a biomarker for detecting alterations in sympathovagal balance, especially cardiovagal dysfunction in OH.
DOI: 10.1016/s0002-8703(98)70014-6
发表时间: 1998-10-01
影响因子: 4.8
作者:
Choy, AMJ;Lang, CC;Biaggioni, I
通讯作者: Biaggioni, I
DOI: 10.1111/j.1540-8159.1997.tb04238.x
发表时间: 1997-09-01
影响因子: 1.8
作者:
Grubb, BP;Kosinski, DJ;Kip, K
通讯作者: Kip, K
DOI: 10.1016/s0022-510x(02)00079-5
发表时间: 2002-07-15
影响因子: 4.4
作者:
Deguchi, K;Sasaki, I;Kuriyama, S
通讯作者: Kuriyama, S
DOI: 10.1056/nejm200010053431404
发表时间: 2000-10-05
影响因子: 158.5
作者:
Jacob, G;Costa, F;Robertson, D
通讯作者: Robertson, D
DOI: 10.1159/000177319
发表时间: 1997-03-01
期刊: CARDIOLOGY
影响因子: 1.9
作者:
Axelrod, FB;Putman, D;Rutkowski, M
通讯作者: Rutkowski, M