Junttila M Juhani, Sager Solomon J, Freiser Monika, McGonagle Scott, Castellanos Agustin, Myerburg Robert J
Division of Cardiology, Miller School of Medicine, University of Miami, FL, USA.
J Interv Card Electrophysiol. 2011 Jun;31(1):33-8. doi: 10.1007/s10840-010-9528-y. Epub 2010 Dec 15.
Early repolarization (ER) has been considered a common benign ECG pattern among young athletes. In contrast, an inferolateral early repolarization pattern has been associated with an increased risk for sudden cardiac death (SCD). The aim of the study was to assess the prevalence of inferolateral ER among young collegiate athletes and to describe the characteristics associated to the pattern.
We analyzed ECGs from 503 athletes (51% males; age range, 17-24). Information on gender, body weight, race, sport, and family history of SCD was collected. ER was defined as a slow deflection of the down slope of the R wave (≥0.1 mV) or positive wave at J point (≥0.1 mV) in two consecutive inferior or in lateral leads. Additionally, we included voltage measurements according to the Sokolow-Lyon criteria and RR interval measurement.
The prevalence of ER was 30% (inferior, 20%; lateral, 21%; both, 11%). Male gender (59% vs. 48%, p = 0.019), left ventricular hypertrophy (LVH) voltage (39% vs. 12%, p < 0.001) was significantly associated with the ER pattern. In addition, there was a trend towards longer RR interval in the inferior ER group (p = 0.06) and there were slightly more African-Americans with ER compared to non-African-American (34% vs. 28%, p = 0.22). Among females (p = 0.039) and African-Americans (p = NS), the association of LVH to ER was not as strong.
ER is a common finding among young athletes. The ECG marker of LVH is the dominant shared characteristic among the athletes with ER, along with male gender and a trend to greater prevalence among African-American athletes.
早期复极（ER）被认为是年轻运动员中常见的良性心电图模式。相比之下，下侧壁早期复极模式与心脏性猝死（SCD）风险增加相关。本研究的目的是评估年轻大学生运动员中下侧壁ER的患病率，并描述与该模式相关的特征。
我们分析了503名运动员（51%为男性；年龄范围17 - 24岁）的心电图。收集了有关性别、体重、种族、运动项目和SCD家族史的信息。ER被定义为两个连续下壁或侧壁导联中R波下降支的缓慢偏移（≥0.1 mV）或J点处的正向波（≥0.1 mV）。此外，我们还根据索科洛夫 - 里昂标准进行了电压测量和RR间期测量。
ER的患病率为30%（下壁，20%；侧壁，21%；两者均有，11%）。男性（59%对48%，p = 0.019）、左心室肥厚（LVH）电压（39%对12%，p < 0.001）与ER模式显著相关。此外，下壁ER组的RR间期有延长趋势（p = 0.06），与非非裔美国人相比，非裔美国人中ER略多（34%对28%，p = 0.22）。在女性中（p = 0.039）和非裔美国人中（p = 无显著差异），LVH与ER的关联不那么强。
ER在年轻运动员中很常见。LVH的心电图标志物是有ER的运动员中主要的共同特征，同时还有男性以及非裔美国运动员中患病率更高的趋势。
