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Normal limits of the electrocardiogram in Angolans

2020-11Journal article Open access
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dc.contributor.authorGonçalves, Mauer
dc.contributor.authorPedro, João Mário
dc.contributor.authorSilva, Carina
dc.contributor.authorMagalhães, Pedro
dc.contributor.authorBrito, Miguel
dc.date.accessioned2020-12-07T21:20:25Z
dc.date.available2020-12-07T21:20:25Z
dc.date.issued2020-11
dc.description.abstractIntroduction: Studies on the normal electrocardiogram limits in African populations are limited, especially in sub-Saharan Africa. There is no literature describing normal ECG limits in Angolans. Objectives: The aim of this study is to establish the normal ECG limits for adult Angolans, without established heart disease, stratified by gender and age. Methods: A cross-sectional study was performed, involving 2179 participants from a population in northern Angola, without established heart disease, aged between 15 and 74 years. A 12‑lead ECG and a rhythm strip were recorded for all participants and analyzed and processed by the University of Glasgow software and encoded by the Minnesota Code. The normal range of the electrocardiographic parameters was established as the 2nd and 98th percentiles of the measurement distribution per age group and gender. Mann-Whitney and Kruskal-Wallis tests were used for two independent groups and Bonferroni adjustments were used for multiple testing. GAMLSS models were used to obtain the continuous age-dependent percentile curves. Results: The normal range of the ECG differed between men and women: heart rate 49 to 100 bpm vs. 55 to 108 bpm, P wave duration 81 to 130 ms vs. 84 to 130 ms, PR interval 119 to 210 ms vs. 120 to 202 ms, QRS duration 74 to 110 ms vs. 70 to 104 ms, QT interval 324 to 441 ms vs. 314 and 438 ms, P-wave axis − 29 to 850 vs. -18 to 810, QRS-wave axis − 13 to 850 vs. -180 and 820, T-wave axis 0 to 720 vs. -8 to 730, Sokolow-Lyon index 2.13 to 6.21 mV vs. 1.60 to 4.87 mV, Cornell index 0.17 to 6.24 mV vs. 0.14 mV to 4.35 mV. Conclusions: The values described for the electrocardiographic measurements above can act as a reference framework for Angolan adults without established heart disease. Our study suggests that the normal range of most ECG parameters varies according to age and sex and the ECG diagnostic criteria must therefore be specific for these demographic measures.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationGonçalves MA, Pedro JM, Silva C, Magalhães P, Brito M. Normal limits of the electrocardiogram in Angolans. J Electrocardiol. 2020;63:68-74.pt_PT
dc.identifier.doi10.1016/j.jelectrocard.2020.10.011pt_PT
dc.identifier.urihttp://hdl.handle.net/10400.21/12420
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.relation.publisherversionhttps://www.sciencedirect.com/science/article/pii/S0022073620305793pt_PT
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/pt_PT
dc.subjectElectrocardiogrampt_PT
dc.subjectECG normal limitspt_PT
dc.subjectCardiologypt_PT
dc.subjectHeart function testspt_PT
dc.subjectElectrodiagnosispt_PT
dc.subjectAngolapt_PT
dc.titleNormal limits of the electrocardiogram in Angolanspt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage74pt_PT
oaire.citation.startPage68pt_PT
oaire.citation.titleJournal of Electrocardiologypt_PT
oaire.citation.volume63pt_PT
person.familyNameSilva
person.familyNameBrito
person.givenNameCarina
person.givenNameMiguel
person.identifier.ciencia-id2411-5936-0820
person.identifier.ciencia-id231F-F341-7E93
person.identifier.orcid0000-0003-1021-7935
person.identifier.orcid0000-0001-6394-658X
person.identifier.ridA-7970-2016
person.identifier.scopus-author-id55258764900
person.identifier.scopus-author-id35224551000
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication81a5cd80-1982-43ba-bde5-4c43ae0e5234
relation.isAuthorOfPublication4252d8e0-800c-4d67-8b13-0b711d860669
relation.isAuthorOfPublication.latestForDiscovery81a5cd80-1982-43ba-bde5-4c43ae0e5234

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