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Normal values of the electrocardiogram in Angolans
Session:
Posters - P. Other
Speaker:
Mauer Gonçalves
Congress:
CPC 2021
Topic:
P. Other
Theme:
37. Miscellanea
Subtheme:
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Session Type:
Posters
FP Number:
---
Authors:
Mauer Goncalves; João Almeida Pedro; Carina Silva; Pedro Magalhães; Miguel Brito
Abstract
<p style="text-align:justify"><span style="font-size:11pt"><span style="font-family:Calibri,sans-serif"><strong>Introduction: </strong>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.</span></span></p> <p style="text-align:justify"><span style="font-size:11pt"><span style="font-family:Calibri,sans-serif"><strong>Objectives: </strong>The aim of this study is to establish the normal ECG values for adult Angolans, without established heart disease, stratified by gender and age.</span></span></p> <p style="text-align:justify"><span style="font-size:11pt"><span style="font-family:Calibri,sans-serif"><strong>Methods: </strong>A cross-sectional study was performed, involving 2 179 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 analysed and processed by the University of Glasgow software and encoded by the Minnesota Code. The normal range of the electrocardiographic parameters were established as the 2nd and 98th percentiles of the measurement distribution per age group and gender. GAMLSS models were used to obtain the continuous age-dependent percentile curves.</span></span></p> <p style="text-align:justify"><span style="font-size:11pt"><span style="font-family:Calibri,sans-serif"> <strong>Results:</strong> Medians were different between men and women: Heart rate 66 <em>vs </em>74 bpm, P wave 108 <em>vs </em>108 ms, PRI 152 <em>vs </em>152 ms, QRS duration 90 vs 85 ms, QTI 376 vs 378 ms, QTIc (Hodges) 392 <em>vs</em>. 404 ms, QTIc (Bazett) 401 <em>vs</em>. 418 ms, QTIc (Fridericia) 392 <em>vs</em>. 404 ms, QTIc (Framinghan) 393 <em>vs</em>. 404 ms, P-wave axes 63 <em>vs </em>59<sup>0</sup>, QRS axes 51 <em>vs </em>48<sup>0</sup>, T-wave axes 45 <em>vs </em>41<sup>0</sup>, Sokolow-Lyon index 3.86 vs 2.87 mV and Cornell index 1.27 vs 0.930 mV.</span></span></p> <p style="text-align:justify"><span style="font-size:11pt"><span style="font-family:Calibri,sans-serif"> <strong>Conclusions: </strong>The values ??described for the electrocardiographic measurements analyzed can be used as a reference for angolan adults without established heart disease. Our study suggest that the normal limits of most ECG parameters vary over time and that the diagnostic criteria for the ECG must be specific for age and sex.</span></span></p>
Slides
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