{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,20]],"date-time":"2026-07-20T18:03:46Z","timestamp":1784570626186,"version":"3.55.0"},"reference-count":4,"publisher":"BMJ","issue":"5","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Heart"],"published-print":{"date-parts":[[1982,5,1]]},"DOI":"10.1136\/hrt.47.5.495","type":"journal-article","created":{"date-parts":[[2007,9,18]],"date-time":"2007-09-18T21:46:00Z","timestamp":1190151960000},"page":"495-496","source":"Crossref","is-referenced-by-count":4,"title":["Haemodynamic effects of pregnancy in patients with heart failure."],"prefix":"10.1136","volume":"47","author":[{"given":"S","family":"Blake","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"H","family":"O'Neill","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"D","family":"MacDonald","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"239","reference":[{"issue":"7","key":"ref_1","first-page":"319","article-title":"A study of cardiac output at rest throughout pregnancy","volume":"1","author":"Lees, M.M.; Taylor, S.H.; Scott, D.B.; Kerr, M.G.","unstructured":"Lees MM, Taylor SH, Scott DB, Kerr MG. A study of cardiac output at rest throughout pregnancy. journal of Obstetrics and Gynaecology of the British Commonwealth 1%7; 74: 319-28.","journal-title":"journal of Obstetrics and Gynaecology of the British Commonwealth"},{"key":"ref_2","first-page":"656","article-title":"Maternal cardiovascular dynamics. IV. The influence of gestational age on the maternal cardiovascular response to posture and exercise","volume":"104","author":"Ueland, K.; Novy, M.J.; Peterson, E.N.; Metcalfe, J.","year":"1969","unstructured":"Ueland K, Novy MJ, Peterson EN, Metcalfe J. Maternal cardiovascular dynamics. IV. The influence of gestational age on the maternal cardiovascular response to posture and exercise. Am J Obstet Gynecol 1969; 104: 656-64.","journal-title":"Am J Obstet Gynecol"},{"issue":"76","key":"ref_3","first-page":"291","article-title":"The effect of posture on the cardiac output during the last six weeks of pregnancy","volume":"1968","author":"Mulholland, H.C.; Boyle, D.M.C.","unstructured":"Mulholland HC, Boyle DMC. The effect of posture on the cardiac output during the last six weeks of pregnancy. Am HeartJ 1968; 76: 291-3.","journal-title":"Am HeartJ"},{"key":"ref_4","first-page":"173","article-title":"Venous thromboembolism and pregnancy","volume-title":"advances in obstetrics and gynaecology","author":"Bonnar, J.","year":"1979","unstructured":"Bonnar J. Venous thromboembolism and pregnancy. In: Stallworthy J, Bourne G, eds. Recent advances in obstetrics and gynaecology. Edinburgh, London, New York: Churchill Livingstone, 1979:173-92."}],"container-title":["Heart"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/syndication.highwire.org\/content\/doi\/10.1136\/hrt.47.5.495","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2020,9,26]],"date-time":"2020-09-26T00:55:34Z","timestamp":1601081734000},"score":1,"resource":{"primary":{"URL":"https:\/\/heart.bmj.com\/lookup\/doi\/10.1136\/hrt.47.5.495"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[1982,5,1]]},"references-count":4,"journal-issue":{"issue":"5","published-print":{"date-parts":[[1982,5,1]]}},"URL":"https:\/\/doi.org\/10.1136\/hrt.47.5.495","relation":{},"ISSN":["1355-6037"],"issn-type":[{"value":"1355-6037","type":"print"}],"subject":[],"published":{"date-parts":[[1982,5,1]]}}}