{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,12,9]],"date-time":"2025-12-09T11:37:10Z","timestamp":1765280230065,"version":"3.40.5"},"reference-count":32,"publisher":"Walter de Gruyter GmbH","issue":"5","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2021,6,25]]},"abstract":"<jats:title>Abstract<\/jats:title>\n               <jats:sec id=\"j_jpm-2020-0169_abs_001_w2aab3b7b5b1b6b1aab1c15b1Aa\">\n                  <jats:title>Objectives<\/jats:title>\n                  <jats:p>The impedance cardiography (ICG) technique measures the variation of impedance in the thorax due to the physical contractile activity of the heart. Twin pregnancy is characterized by greater maternal hemodynamic changes than a singleton pregnancy.<\/jats:p>\n               <\/jats:sec>\n               <jats:sec id=\"j_jpm-2020-0169_abs_002_w2aab3b7b5b1b6b1aab1c15b2Aa\">\n                  <jats:title>Methods<\/jats:title>\n                  <jats:p>In a study on 121 pregnant women in the last trimester we performed ICG, evaluating the following hemodynamic parameters: stroke volume, heart rate, cardiac output, ventricular ejection time, left ventricular ejection time, thoracic impedance, and systemic vascular resistance.<\/jats:p>\n               <\/jats:sec>\n               <jats:sec id=\"j_jpm-2020-0169_abs_003_w2aab3b7b5b1b6b1aab1c15b3Aa\">\n                  <jats:title>Results<\/jats:title>\n                  <jats:p>The study included singleton and twin pregnancies. Heart rate values in women with single fetus was lower than in those carrying twins (85 vs. 100 beats\/min, p=0.021) as were the stroke volume values (64 vs. 83\u00a0mL, p=0.010) and the cardiac output (p&lt;0.0001). Systemic vascular resistance decreased in twin pregnancies compared to singleton pregnancy (p=0.023).<\/jats:p>\n               <\/jats:sec>\n               <jats:sec id=\"j_jpm-2020-0169_abs_004_w2aab3b7b5b1b6b1aab1c15b4Aa\">\n                  <jats:title>Conclusions<\/jats:title>\n                  <jats:p>ICG studies are rare, and the validation of their results is an ongoing process. However, the ICG technique is applicable in the third trimester of pregnancy and can yield important information regarding the hemodynamic profile of singleton and twin pregnancies, revealing maternal heart changes specific to twin pregnancies.<\/jats:p>\n               <\/jats:sec>","DOI":"10.1515\/jpm-2020-0169","type":"journal-article","created":{"date-parts":[[2021,2,12]],"date-time":"2021-02-12T07:11:14Z","timestamp":1613113874000},"page":"566-571","source":"Crossref","is-referenced-by-count":8,"title":["Comparison of maternal third trimester hemodynamics between singleton pregnancy and twin pregnancy"],"prefix":"10.1515","volume":"49","author":[{"given":"Romina-Marina","family":"Sima","sequence":"first","affiliation":[{"name":"The \u201cCarol Davila\u201d University of Medicine and Pharmacy , Bucharest , Romania"},{"name":"The \u201cBucur\u201d Maternity, \u201cSaint John\u201d Hospital , Bucharest , Romania"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Sebastian","family":"Findeklee","sequence":"additional","affiliation":[{"name":"Department for Gynecology, Obstetrics and Reproductive Medicine , Saarland University Hospital Homburg , Homburg , Germany"},{"name":"Fertility Center Hamburg , Hamburg , Germany"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ioana-Anca","family":"B\u0103d\u0103r\u0103u","sequence":"additional","affiliation":[{"name":"The \u201cCarol Davila\u201d University of Medicine and Pharmacy , Bucharest , Romania"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Mircea-Octavian","family":"Poenaru","sequence":"additional","affiliation":[{"name":"The \u201cCarol Davila\u201d University of Medicine and Pharmacy , Bucharest , Romania"},{"name":"The \u201cBucur\u201d Maternity, \u201cSaint John\u201d Hospital , Bucharest , Romania"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7676-6393","authenticated-orcid":false,"given":"Cristian","family":"Scheau","sequence":"additional","affiliation":[{"name":"The \u201cCarol Davila\u201d University of Medicine and Pharmacy , Bucharest , Romania"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Liana","family":"Ple\u0219","sequence":"additional","affiliation":[{"name":"The \u201cCarol Davila\u201d University of Medicine and Pharmacy , Bucharest , Romania"},{"name":"The \u201cBucur\u201d Maternity, \u201cSaint John\u201d Hospital , Bucharest , Romania"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"374","published-online":{"date-parts":[[2021,2,11]]},"reference":[{"key":"2023033123480321753_j_jpm-2020-0169_ref_001_w2aab3b7b5b1b6b1ab2b1b1Aa","doi-asserted-by":"crossref","unstructured":"Robson, SC, Hunter, S, Boys, RJ, Dunlop, W. 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