Prevalence of Interatrial Block in Healthy School-Aged Children: Definition by P-Wave Duration or Morphological Analysis
| Autor: | Dimitrios Maragiannis, Andreas P. Michaelides, Konstantinos Gatzoulis, Polychronis Dilaveris, Leonidas Raftopoulos, Christodoulos Stefanadis, Dimitrios Roussos, Georgios Giannopoulos, Stylianos Katinakis |
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| Rok vydání: | 2010 |
| Předmět: |
Male
medicine.medical_specialty Percentile Adolescent Population Vectorcardiography Reference range Electrocardiography Reference Values Physiology (medical) Internal medicine Prevalence medicine Humans Cutoff Atrioventricular Block Child education education.field_of_study Greece medicine.diagnostic_test business.industry Signal Processing Computer-Assisted Interatrial Block Original Articles General Medicine Morphological analysis Cardiology Female Cardiology and Cardiovascular Medicine business |
| Zdroj: | Annals of Noninvasive Electrocardiology. 15:17-25 |
| ISSN: | 1542-474X 1082-720X |
| DOI: | 10.1111/j.1542-474x.2009.00335.x |
| Popis: | Background: P waves ≥110 ms in adults and ≥90 ms in children are considered abnormal, signifying interatrial block, particularly in the first case. Methods: To evaluate the prevalence of interatrial block in healthy school-aged children, we obtained 12-lead digital ECGs (Cardioperfect 1.1, CardioControl NV, Delft, The Netherlands) of 664 healthy children (349 males/315 females, age range 6–14 years old). P-wave analysis indices [mean, maximum and minimum (in the 12 leads) P-wave duration, P-wave dispersion, P-wave morphology in the derived orthogonal (X, Y, Z) leads, as well the amplitude of the maximum spatial P-wave vector] were calculated in all study participants. Results: P-wave descriptor values were: mean P-wave duration 84.9 ± 9.5 ms, maximum P-wave duration 99.0 ± 9.8 ms, P dispersion 32.2 ± 12.5 ms, spatial P amplitude 182.7 ± 69.0 μV. P-wave morphology distribution in the orthogonal leads were: Type I 478 (72.0%), Type II 178 (26.8%), Type III 1 (0.2%), indeterminate 7 (1%). Maximum P-wave duration was positively correlated to age (P < 0.001) and did not differ between sexes (P = 0.339). Using the 90-ms value as cutoff for P-wave duration, 502 (75.6%) children would be classified as having maximum P-wave duration above reference range. The 95th and the 99th percentiles were in the overall population 117 ms and 125 ms, respectively. P-wave morphology type was not in any way correlated to P-wave duration (P = 0.715). Conclusions: Abnormal P-wave morphology signifying the presence of interatrial block is very rare in a healthy pediatric population, while widened P waves are quite common, although currently classified as abnormal. Ann Noninvasive Electrocardiol 2010;15(1):17–25 |
| Databáze: | OpenAIRE |
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