{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,4]],"date-time":"2026-05-04T15:12:18Z","timestamp":1777907538838,"version":"3.51.4"},"reference-count":9,"publisher":"SAGE Publications","issue":"2","license":[{"start":{"date-parts":[[2025,2,9]],"date-time":"2025-02-09T00:00:00Z","timestamp":1739059200000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"content-domain":{"domain":["journals.sagepub.com"],"crossmark-restriction":true},"short-container-title":["Trop Doct"],"published-print":{"date-parts":[[2025,4]]},"abstract":"<jats:p>\n                    A low-cost device capable of recording a full 12-lead electrocardiogram (ECG) is described using a commercially available analogue front end (ADS1293) and a microprocessor (ESP32) transmitting a signal by Bluetooth to a smartphone. Comparison of the measured V leads and V leads derived by vector analysis using a transverse plane 0\u00b0 reference vector (lead I) showed significant cross-correlation both for traces acquired from 120 Blantyre patients (0.43) and from the historical PhysioNet ECG database (0.85) and also when a\u2009+\u200930\u00b0 transverse plane vector (\u2212aVR) was used (0.50 Blantyre, 0.83 PhysioNet). Good correlation was also found between the mean transverse axis vector for the synchronous PhysioNet data (\n                    <jats:italic>r<\/jats:italic>\n                    \u2009=\u20090.91) but not for the asynchronous Blantyre data (\n                    <jats:italic>r<\/jats:italic>\n                    \u2009=\u20090.13) perhaps as a result of the QRS detection algorithm employed.\n                  <\/jats:p>","DOI":"10.1177\/00494755251318077","type":"journal-article","created":{"date-parts":[[2025,2,10]],"date-time":"2025-02-10T02:50:31Z","timestamp":1739155831000},"page":"89-93","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":0,"title":["Low-cost paperless electrocardiograph for low-income countries, with derived V leads and a QRS detection algorithm"],"prefix":"10.1177","volume":"55","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-4808-2696","authenticated-orcid":false,"given":"Peter","family":"Finch","sequence":"first","affiliation":[{"name":"Senior Lecturer, Kamuzu University of Health Sciences, Blantyre, Malawi"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Maclean","family":"Ndovie","sequence":"additional","affiliation":[{"name":"Medical Officer, Queen Elizabeth Central Hospital, Blantyre, Malawi"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Michael","family":"Rashid","sequence":"additional","affiliation":[{"name":"ECG Technician, Queen Elizabeth Central Hospital, Blantyre, Malawi"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"David","family":"McCarty","sequence":"additional","affiliation":[{"name":"Cardiologist and Senior Lecturer, Kamuzu University of Health Sciences, Blantyre, Malawi"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"179","published-online":{"date-parts":[[2025,2,9]]},"reference":[{"key":"e_1_3_2_2_2","doi-asserted-by":"publisher","DOI":"10.1111\/j.1742-6723.2007.01004.x"},{"key":"e_1_3_2_3_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.ipej.2019.02.006"},{"key":"e_1_3_2_4_2","doi-asserted-by":"publisher","DOI":"10.1161\/01.CIR.13.5.737"},{"key":"e_1_3_2_5_2","doi-asserted-by":"publisher","DOI":"10.1109\/RBME.2013.2264282"},{"key":"e_1_3_2_6_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.ajem.2013.04.037"},{"key":"e_1_3_2_7_2","doi-asserted-by":"publisher","DOI":"10.1016\/0022-0736(88)90090-8"},{"key":"e_1_3_2_8_2","doi-asserted-by":"publisher","DOI":"10.3390\/s19143072"},{"key":"e_1_3_2_9_2","doi-asserted-by":"publisher","DOI":"10.1155\/2020\/8868685"},{"key":"e_1_3_2_10_2","doi-asserted-by":"publisher","DOI":"10.1109\/TBME.1985.325532"}],"container-title":["Tropical Doctor"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/journals.sagepub.com\/doi\/pdf\/10.1177\/00494755251318077","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/journals.sagepub.com\/doi\/full-xml\/10.1177\/00494755251318077","content-type":"application\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/journals.sagepub.com\/doi\/pdf\/10.1177\/00494755251318077","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,5,1]],"date-time":"2026-05-01T13:36:55Z","timestamp":1777642615000},"score":1,"resource":{"primary":{"URL":"https:\/\/journals.sagepub.com\/doi\/10.1177\/00494755251318077"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2025,2,9]]},"references-count":9,"journal-issue":{"issue":"2","published-print":{"date-parts":[[2025,4]]}},"alternative-id":["10.1177\/00494755251318077"],"URL":"https:\/\/doi.org\/10.1177\/00494755251318077","relation":{},"ISSN":["0049-4755","1758-1133"],"issn-type":[{"value":"0049-4755","type":"print"},{"value":"1758-1133","type":"electronic"}],"subject":[],"published":{"date-parts":[[2025,2,9]]}}}