{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2024,9,3]],"date-time":"2024-09-03T15:01:34Z","timestamp":1725375694921},"reference-count":19,"publisher":"Springer Science and Business Media LLC","issue":"1","license":[{"start":{"date-parts":[[2024,3,26]],"date-time":"2024-03-26T00:00:00Z","timestamp":1711411200000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0"},{"start":{"date-parts":[[2024,3,26]],"date-time":"2024-03-26T00:00:00Z","timestamp":1711411200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0"}],"content-domain":{"domain":["link.springer.com"],"crossmark-restriction":false},"short-container-title":["BMC Anesthesiol"],"abstract":"<jats:title>Abstract<\/jats:title><jats:sec>\n                <jats:title>Background<\/jats:title>\n                <jats:p>Abnormal diastolic function is an independent predictor of adverse postoperative outcomes. Mitral annular tissue Doppler velocity (e\u2019) is a key parameter for assessing diastolic function. The purpose of this study was to confirm that an acute increase in preload did not significantly impact the intraoperative measurement of e\u2019 and secondarily evaluate the impact of this acute intravascular volume increase on the clinical assessment of diastolic function using a previously described simplified algorithm.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Methods<\/jats:title>\n                <jats:p>This was a prospective, non-randomized study in adult patients undergoing elective cardiac surgeries requiring transesophageal echocardiographic monitoring, arterial pressure and Swan-Ganz catheter placements as part of the surgical procedure. Following baseline echocardiographic and hemodynamic measurements, 500\u00a0ml of crystalloid solution was infused over 10\u00a0min. Hemodynamic and echocardiographic measurements were repeated 5\u00a0min after fluid administration.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Results<\/jats:title>\n                <jats:p>Complete data sets were available from 84 of the 100 patients who were enrolled in this study. There was no significant change in the values of e\u2019. The average baseline was 7.8\u2009\u00b1\u20092.0\u00a0cm\/s (95%CI: 7.4, 8.2) and 8.1\u2009\u00b1\u20092.4 (95%CI: 7.6, 8.6) following the fluid bolus (<jats:italic>p<\/jats:italic>\u2009=\u20090.10). All hemodynamic variables associated with increased intravascular volume (central venous pressure, pulmonary arterial pressures and stroke volume variation) changed significantly. The overall distribution of diastolic function grades did not change following fluid administration (<jats:italic>p<\/jats:italic>\u2009=\u20090.69). However, there were many individual patient differences. When using this simplified algorithm, functional grading changed in 35 patients. Thirty of these 35 changes were only a single grade shift. 22 patients had worse functional grading after fluid administration while 13 had improved grading. Nine patients with normal diastolic function at baseline demonstrated diastolic dysfunction after fluid administration while 6 patients with baseline dysfunction normalized following the fluid bolus.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Conclusion<\/jats:title>\n                <jats:p>We confirmed that e\u2019 is a robust measurement that is reproducible in the intraoperative setting despite variable vascular volume loading conditions, however, the clinical assessment of diastolic function was still altered in 42% of the patients following an intravenous fluid bolus.<\/jats:p>\n              <\/jats:sec>","DOI":"10.1186\/s12871-024-02503-y","type":"journal-article","created":{"date-parts":[[2024,3,26]],"date-time":"2024-03-26T06:22:28Z","timestamp":1711434148000},"update-policy":"http:\/\/dx.doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["The effects of an IV fluid bolus on mitral annular velocity and the assessment of diastolic function: a prospective non-randomized study"],"prefix":"10.1186","volume":"24","author":[{"given":"Sebastian","family":"Ayala","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Orode","family":"Badakhsh","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"David","family":"Li","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Neal W.","family":"Fleming","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"297","published-online":{"date-parts":[[2024,3,26]]},"reference":[{"key":"2503_CR1","doi-asserted-by":"publisher","first-page":"67","DOI":"10.1186\/1749-8090-4-67","volume":"4","author":"EE Apostolakis","year":"2009","unstructured":"Apostolakis EE, Baikoussis NG, Parissis H, Siminelakis SN, Papadopoulos GS. 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All patients provided written informed consent prior to enrollment.","order":2,"name":"Ethics","group":{"name":"EthicsHeading","label":"Ethics approval and consent to participate"}},{"value":"Not applicable.","order":3,"name":"Ethics","group":{"name":"EthicsHeading","label":"Consent for publication"}},{"value":"Neal Fleming has supported contracted research for Acacia Pharma, Tsumera Pharmaceuticals, Haisco Pharmaceuticals, Masimo, Inc. and Edwards LifeSciences and received honoraria from Edwards LifeSciences for invited presentations. All other authors have no competing interests.","order":4,"name":"Ethics","group":{"name":"EthicsHeading","label":"Competing interests"}}],"article-number":"117"}}