{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,16]],"date-time":"2026-05-16T04:39:11Z","timestamp":1778906351801,"version":"3.51.4"},"reference-count":42,"publisher":"Wiley","issue":"5","license":[{"start":{"date-parts":[[2022,7,15]],"date-time":"2022-07-15T00:00:00Z","timestamp":1657843200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100000348","name":"Calouste Gulbenkian Foundation","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100000348","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Noninvasive Electrocardiol"],"published-print":{"date-parts":[[2022,9]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Background<\/jats:title><jats:p>Studies on the electrocardiogram findings in African pregnant women are limited. There is no information available in the literature on the electrocardiographic parameters of pregnant Angolan women.<\/jats:p><\/jats:sec><jats:sec><jats:title>Objectives<\/jats:title><jats:p>The aim of this study was to describe electrocardiographic findings in women with normal pregnancies in Bengo Province, Angola.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>This is a community\u2010based study with a cross\u2010sectional design conducted between September 2013 and March 2014 in Bengo. The study involved 114 black pregnant women, compared with a paired control group comprising of 120 black non\u2010pregnant women, aged 15 to 42\u2009years. A 12\u2010lead electrocardiogram and a rhythm strip were recorded for all participants.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>In this study, the mean age was 26.2\u2009\u00b1\u20097.3\u2009years. Comparing pregnant women vs. non\u2010pregnant, we found the following mean values: Heart rate (83\u2009bpm vs. 74\u2009bpm,<jats:italic>p<\/jats:italic>\u2009&lt;\u2009.001), PR interval (146\u2009ms vs. 151\u2009ms,<jats:italic>p<\/jats:italic>\u00a0=\u00a0.034), QT interval (360\u2009ms vs. 378\u2009ms,<jats:italic>p<\/jats:italic>\u2009&lt;\u2009.001), QTIc Fridericia (398\u2009ms vs. 403,<jats:italic>p<\/jats:italic>\u00a0=\u00a0.017), QTIc Framingham (399\u2009ms vs. 404\u2009ms,<jats:italic>p<\/jats:italic>\u00a0=\u00a0.013) and T\u2010wave axis (34<jats:sup>0<\/jats:sup>vs. 41<jats:sup>0<\/jats:sup>,<jats:italic>p<\/jats:italic>\u00a0=\u00a0.001).The main electrocardiographic changes found were: Sinus tachycardia (4.4% vs. 2.5%), T\u2010wave inversion (14.9% vs. 1.7%), Minor ST segment depression (4.5% vs. 0%) and left ventricular hypertrophy (11.4% vs. 11.7%,<jats:italic>p<\/jats:italic>\u00a0=\u00a0.726).<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>Pregnant Angolan women compared with controls, had several significantly higher values for heart rate, and significantly lower values of systolic blood pressure and diastolic blood pressure, PR interval, QT interval, QTc interval by Fridericia and Framingham and T\u2010wave axis. Sinus tachycardia, T\u2010wave inversion, and left ventricular hypertrophy, were the main electrocardiographic changes found.<\/jats:p><\/jats:sec>","DOI":"10.1111\/anec.12980","type":"journal-article","created":{"date-parts":[[2022,7,15]],"date-time":"2022-07-15T07:33:28Z","timestamp":1657870408000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":4,"title":["Electrocardiographic findings in pregnant women in Angola"],"prefix":"10.1111","volume":"27","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-9273-3321","authenticated-orcid":false,"given":"Mauer A. A.","family":"Gon\u00e7alves","sequence":"first","affiliation":[{"name":"Centro de Estudos Avan\u00e7ados em Educa\u00e7\u00e3o e Forma\u00e7\u00e3o M\u00e9dica (CEDUMED) Luanda Angola"},{"name":"Faculty of Medicine University Agostinho Neto Luanda Angola"},{"name":"Centro de Investiga\u00e7\u00e3o em Sa\u00fade de Angola (CISA) Caxito Angola"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2405-521X","authenticated-orcid":false,"given":"Jo\u00e3o M\u00e1rio","family":"Pedro","sequence":"additional","affiliation":[{"name":"EPIUnit, Instituto de Sa\u00fade P\u00fablica Universidade do Porto Porto Portugal"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1021-7935","authenticated-orcid":false,"given":"Carina","family":"Silva","sequence":"additional","affiliation":[{"name":"Health and Technology Research Center (H&amp;TRC) Escola Superior de Tecnologia da Sa\u00fade de Lisboa, Instituto Polit\u00e9cnico de Lisboa Lisboa Portugal"},{"name":"CEAUL \u2010 Centro de Estat\u00edstica e Aplica\u00e7\u00f5es, Faculdade de Ci\u00eancias Universidade de Lisboa Lisboa Portugal"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2382-6422","authenticated-orcid":false,"given":"Pedro","family":"Magalh\u00e3es","sequence":"additional","affiliation":[{"name":"Faculty of Medicine University Agostinho Neto Luanda Angola"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6394-658X","authenticated-orcid":false,"given":"Miguel","family":"Brito","sequence":"additional","affiliation":[{"name":"Centro de Investiga\u00e7\u00e3o em Sa\u00fade de Angola (CISA) Caxito Angola"},{"name":"Health and Technology Research Center (H&amp;TRC) Escola Superior de Tecnologia da Sa\u00fade de Lisboa, Instituto Polit\u00e9cnico de Lisboa Lisboa Portugal"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2022,7,15]]},"reference":[{"key":"e_1_2_11_2_1","doi-asserted-by":"publisher","DOI":"10.1136\/hrt.2006.098822"},{"key":"e_1_2_11_3_1","doi-asserted-by":"publisher","DOI":"10.5830\/CVJA\u20102010\u2010043"},{"key":"e_1_2_11_4_1","doi-asserted-by":"publisher","DOI":"10.4103\/jmms.jmms_6_20"},{"key":"e_1_2_11_5_1","doi-asserted-by":"publisher","DOI":"10.1097\/00001503\u2010200206000\u201000002"},{"key":"e_1_2_11_6_1","doi-asserted-by":"publisher","DOI":"10.1016\/0002\u20108703(81)90497\u2010X"},{"key":"e_1_2_11_7_1","doi-asserted-by":"publisher","DOI":"10.1576\/toag.2002.4.4.212"},{"issue":"2","key":"e_1_2_11_8_1","first-page":"72","article-title":"Physiological changes associated with pregnancy","volume":"24","author":"Ciliberto C. 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