Prevalence of Electrocardiographic Anomalies in Young Individuals

Chandra, Navin; Bastiaenen, Rachel; Papadakis, Michael; Panoulas, Vasileios F.; Ghani, Saqib; Duschl, Jennifer; Foldes, David; Raju, Hariharan; Osborne, Rebecca; Sharma, Sanjay

doi:10.1016/j.jacc.2014.01.046

Cited by 60 publications

(38 citation statements)

References 12 publications

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“…The prolonged QTc interval (>440 ms in males and >460 ms in females) was rarely found (0.03%). According to the same criteria, Basaravagajaiah et al 5 reported the prevalence of 0.4% in elite 7 comparing the prevalence of potentially abnormal ECG changes in young nonathletes and athletes found group 1 (training related) and group 2 (potentially pathological, training unrelated) patterns more prevalent in athletes. ECG patterns suggestive to ion-channelopathy or electrical heart disease were found in 13.5% of nonathletes and 16.4% of athletes.…”

Section: Discussionmentioning

confidence: 99%

“…the duration of repolarization state. Prevalence of abnormal QTc interval duration reported by a numerous screening studies varied and ranged from very low 0.03% to over 6% [3][4][5][6] and for a combination of long and short QTc to over 16% in some studies, 7 due to age, sex, characteristics of the population studied-sport activity status, in particular, ethnicity, measurement technique, and criteria of cutoff points used by authors. The heart ratecorrected JT (JTc) interval has been proposed as a more appropriate measure of ventricular repolarization than the QTc interval in individuals with the increased QRS duration.…”

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confidence: 99%

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Heart Rate–Corrected QT and JT Intervals in Electrocardiograms in Physically Fit Students and Student Athletes

Mišıgoj-Duraković

Duraković²,

Prskalo³

2016

Noninvasive Electrocardiol

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In literature, data on the prevalence of prolonged and shortened corrected QT (QTc) have shown considerable variability. The aim of the study was to compare QTc and JTc intervals of competitive student athletes and noncompetitive sport participants to QTc cutoff points used in athletes. A group of 485 physically fit candidates for the study of kinesiology (139 female and 346 male candidates) aged 18-20 participated in the study. Basic anthropometry, field fitness test, cardiovascular, electrocardiograms measurements, and blood sampling for lipid profile were conducted. The prolonged QTc according to European Society of Cardiology criteria was found in 2.9% of female and 4.3% of male students. When the "Seattle criteria" were used, the proportion of prolonged QTc was 1.44% in female and 0.29% in male students. The shortened QTc according to the Seattle cutoff points was presented in 0.7% of female and 2.0% of male students. The JTc over 400 ms was found in 0.72% of female and 0.29% of male students. The JTc shorter than 320 ms was presented in 0.7% of female and 1.1% of male students. No significant differences were found between students involved in competitive sport and those involved in recreational sporting activities. Female students had lower body mass index and blood pressure values, better blood lipid profile, and lower uric acid concentrations. In conclusion, the Seattle criteria markedly decreased the proportion of prolonged QTc in student athletes, particularly in male students. It seems that the JTc interval could be a better parameter than the QTc interval for the estimation of specific repolarization time in physically fit university students.

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Section: Discussionmentioning

confidence: 99%

mentioning

confidence: 99%

Heart Rate–Corrected QT and JT Intervals in Electrocardiograms in Physically Fit Students and Student Athletes

Mišıgoj-Duraković

Duraković²,

Prskalo³

2016

Noninvasive Electrocardiol

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“…Screening tests and their utility in competitive athletes were discussed by Leischik et al [20,21]. Following studies in athletes, a recent study also evaluated the usefulness of screening ECG in the general population [22].…”

Section: Discussionmentioning

confidence: 99%

Prevalence and determinants of the early repolarisation pattern in a group of young high endurance rowers

et al. 2016

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A b s t r a c t Background:The prevalence and significance of the early repolarisation (ER) pattern in the general population has raised a number of questions. Even less data are available on athletes. Aim:To determine the prevalence and determinants of ER in a group of young high endurance athletes. Methods:We studied 117 rowers (46% women, mean age 17.5 ± 1.5 years, mean training duration 4.3 ± 1.8 years). On 12-lead electrocardiogram (ECG), we evaluated inferolateral leads for the presence of the ER pattern, defined as at least 0.1 mV elevation of the QRS-ST junction (J point) from the baseline in at least two leads. All subjects underwent detailed echocardiographic study, cardiopulmonary exercise test with evaluation of VO 2 max (mean 57.1 ± 8.4 mL/kg/min), and evaluation of complete blood count and biometric parameters (fat tissue, body mass index, body surface area). Results:We identified 35 subjects with ER in the inferior and/or lateral leads. The phenomenon was more frequent in males (n = 25, 21.36% of the overall study population) than in females (n = 10, 8.54%, p = 0.01). The training duration in both groups (with or without ER) was similar (4.4 ± 1.5 vs. 4.3 ± 1.8 years, p > 0.05). Athletes with the ER pattern had significantly higher VO 2 max (58.8 ± 7.8 vs. 55.3 ± 8.2 mL/kg/min, p = 0.03), lower resting heart rate (58.7 ± 11.3 vs. 65.4 ± 11.9 bpm, p < 0.01), higher haemoglobin level (15.2 ± 0.8 vs. 14.6 ± 1.2 g/dL, p < 0.01), higher red blood cell count (5.31 ± 0.3 vs. 4.98 ± 0.4 million/µL, p = 0.04), and lower fat tissue mass (12.1 ± 4.4 vs. 14.9 ± 6.0 kg, p < 0.01). Compared with the others, the ER group was characterised by a higher left atrial area index (12.2 ± 1.3 vs. 11.5 ± 1.6 cm 2 /m 2 , p = 0.01), right atrial area index (9.9 ± 1.3 vs. 9.0 ± 1.4 cm 2 /m 2 , p < 0.01), and right ventricular basal diameter index (2.0 ± 0.2 vs. 1.9 ± 0.2 cm/m 2 , p = 0.04). We found no significant differences in any other cardiac size and function parameters.Conclusions: ER pattern in the inferior and/or lateral leads is a frequent finding in the population of young high endurance rowers. The presence of ER pattern is associated with gender and a number of parameters reflecting the general level of fitness and may be considered an electrophysiological sign of the athlete's heart. The significance of these alterations should be evaluated in prospective follow-up studies.

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“…However, substantial electrocardiographic changes occur due to physiological changes from intense physical training 15 , and thus caution must be exercised when attempting to generalize these results to other populations. Nevertheless, it is clear from these cohorts that black athletes…”

Section: Discussionmentioning

confidence: 99%

Electrocardiographic Abnormalities in Disease-Free Black South Africans and Correlations With Echocardiographic Indexes and Early Repolarization

Lohrmann

Peters

Srivathsan

et al. 2016

The American Journal of Cardiology

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Prevalence of Electrocardiographic Anomalies in Young Individuals

Cited by 60 publications

References 12 publications

Heart Rate–Corrected QT and JT Intervals in Electrocardiograms in Physically Fit Students and Student Athletes

Heart Rate–Corrected QT and JT Intervals in Electrocardiograms in Physically Fit Students and Student Athletes

Prevalence and determinants of the early repolarisation pattern in a group of young high endurance rowers

Electrocardiographic Abnormalities in Disease-Free Black South Africans and Correlations With Echocardiographic Indexes and Early Repolarization

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