{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,20]],"date-time":"2026-09-20T04:44:11Z","timestamp":1789879451896,"version":"4.0.1"},"reference-count":16,"publisher":"BMJ","issue":"5","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Arch Dis Child Fetal Neonatal Ed"],"accepted":{"date-parts":[[2011,12,19]]},"published-print":{"date-parts":[[2012,9]]},"abstract":"\n Objective<\/jats:title>\n Electrical velocimetry (EV) is a non-invasive method of continuous left cardiac output monitoring based on measurement of thoracic electrical bioimpedance. The objective was to validate EV by investigating the agreement in cardiac output measurements performed by EV and echocardiography.<\/jats:p>\n <\/jats:sec>\n \n Design<\/jats:title>\n \n In this prospective observational study, left ventricular output (LVO) was simultaneously measured by EV (LVO\n ev<\/jats:sub>\n ) using Aesculon and by echocardiography (LVO\n echo<\/jats:sub>\n ) in healthy term neonates during the first 2 postnatal days. To determine the agreement between the two methods, we calculated the bias (mean difference) and precision (1.96\u00d7SD of the difference). As LVO\n echo<\/jats:sub>\n has its own limitations, the authors also calculated the \u2018true precision\u2019 of EV adjusted for echocardiography as the reference method.\n <\/jats:p>\n <\/jats:sec>\n \n Results<\/jats:title>\n \n The authors performed 115 paired measurements in 20 neonates. LVO\n ev<\/jats:sub>\n and LVO\n echo<\/jats:sub>\n were similar (534\u00b1105 vs 538\u00b1105 ml\/min, p=0.7). The bias and precision of EV were \u22124 and 234 ml\/min, respectively. The authors found the true precision of EV to be similar to the precision of echocardiography (31.6% vs 30%, respectively). There was no difference in bias and precision between the measurements obtained in patients with or without a haemodynamically significant patent ductus arteriosus.\n <\/jats:p>\n <\/jats:sec>\n \n Conclusions<\/jats:title>\n EV is as accurate in measuring LVO as echocardiography and the variation in the agreement between EV and echocardiography among the individual subjects reflects the limitations of both techniques.<\/jats:p>\n <\/jats:sec>","DOI":"10.1136\/fetalneonatal-2011-301090","type":"journal-article","created":{"date-parts":[[2012,8,29]],"date-time":"2012-08-29T09:07:58Z","timestamp":1346231278000},"page":"F340-F343","source":"Crossref","is-referenced-by-count":133,"title":["Continuous non-invasive cardiac output measurements in the neonate by electrical velocimetry: a comparison with echocardiography"],"prefix":"10.1136","volume":"97","author":[{"given":"Shahab","family":"Noori","sequence":"first","affiliation":[{"name":"1Division of Neonatology and the Center for Fetal and Neonatal Medicine, Department of Pediatrics, Children's Hospital Los Angeles and the LAC+USC Medical Center, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA"},{"name":"2Section of Neonatal-Perinatal Medicine, Department of Pediatrics, The Children's Hospital, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Benazir","family":"Drabu","sequence":"additional","affiliation":[{"name":"2Section of Neonatal-Perinatal Medicine, Department of Pediatrics, The Children's Hospital, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sadaf","family":"Soleymani","sequence":"additional","affiliation":[{"name":"1Division of Neonatology and the Center for Fetal and Neonatal Medicine, Department of Pediatrics, Children's Hospital Los Angeles and the LAC+USC Medical Center, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA"},{"name":"3Department of Biomedical Engineering, Viterbi School of Engineering, University of Southern California, Los Angeles, California, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Istvan","family":"Seri","sequence":"additional","affiliation":[{"name":"1Division of Neonatology and the Center for Fetal and Neonatal Medicine, Department of Pediatrics, Children's Hospital Los Angeles and the LAC+USC Medical Center, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"239","published-online":{"date-parts":[[2012,8,29]]},"reference":[{"key":"2025090512163348000_97.5.F340.1","doi-asserted-by":"publisher","DOI":"10.1016\/j.earlhumdev.2010.01.031"},{"key":"2025090512163348000_97.5.F340.2","first-page":"1208","article-title":"Development and evaluation of an impedance cardiac output system","volume":"37","author":"Kubicek","year":"1966","journal-title":"Aerosp Med"},{"key":"2025090512163348000_97.5.F340.3","doi-asserted-by":"publisher","DOI":"10.1111\/j.1460-9592.2007.02210.x"},{"key":"2025090512163348000_97.5.F340.4","doi-asserted-by":"publisher","DOI":"10.1111\/j.1399-6576.2007.01445.x"},{"key":"2025090512163348000_97.5.F340.5","doi-asserted-by":"publisher","DOI":"10.1007\/s00134-006-0409-x"},{"key":"2025090512163348000_97.5.F340.6","doi-asserted-by":"publisher","DOI":"10.1093\/bja\/aem320"},{"key":"2025090512163348000_97.5.F340.7","unstructured":"Skinner J Alverson D Hunter S . Echocardiography for the Neonatologist. Edinburgh: Churchill Livingstone 2000."},{"key":"2025090512163348000_97.5.F340.8","doi-asserted-by":"publisher","DOI":"10.1016\/S0022-3476(95)70172-9"},{"key":"2025090512163348000_97.5.F340.9","doi-asserted-by":"publisher","DOI":"10.1038\/jp.2010.97"},{"key":"2025090512163348000_97.5.F340.10","doi-asserted-by":"publisher","DOI":"10.1080\/10543400701329422"},{"key":"2025090512163348000_97.5.F340.11","doi-asserted-by":"publisher","DOI":"10.1023\/A:1009982611386"},{"key":"2025090512163348000_97.5.F340.12","doi-asserted-by":"publisher","DOI":"10.1097\/PCC.0b013e3181b064ea"},{"key":"2025090512163348000_97.5.F340.13","doi-asserted-by":"publisher","DOI":"10.1186\/cc7129"},{"key":"2025090512163348000_97.5.F340.14","doi-asserted-by":"publisher","DOI":"10.1007\/s00134-003-1967-9"},{"key":"2025090512163348000_97.5.F340.15","doi-asserted-by":"publisher","DOI":"10.1016\/S0022-3476(82)80178-9"},{"key":"2025090512163348000_97.5.F340.16","doi-asserted-by":"publisher","DOI":"10.1016\/j.earlhumdev.2010.01.032"}],"container-title":["Archives of Disease in Childhood - Fetal and Neonatal Edition"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/syndication.highwire.org\/content\/doi\/10.1136\/fetalneonatal-2011-301090","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,9,5]],"date-time":"2025-09-05T19:16:40Z","timestamp":1757099800000},"score":1,"resource":{"primary":{"URL":"https:\/\/fn.bmj.com\/lookup\/doi\/10.1136\/fetalneonatal-2011-301090"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2012,8,29]]},"references-count":16,"journal-issue":{"issue":"5","published-online":{"date-parts":[[2012,8,29]]},"published-print":{"date-parts":[[2012,9]]}},"alternative-id":["10.1136\/fetalneonatal-2011-301090"],"URL":"https:\/\/doi.org\/10.1136\/fetalneonatal-2011-301090","relation":{},"ISSN":["1359-2998","1468-2052"],"issn-type":[{"value":"1359-2998","type":"print"},{"value":"1468-2052","type":"electronic"}],"subject":[],"published":{"date-parts":[[2012,8,29]]}}}