{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,6]],"date-time":"2026-03-06T01:31:35Z","timestamp":1772760695668,"version":"3.50.1"},"reference-count":39,"publisher":"Springer Science and Business Media LLC","issue":"1","license":[{"start":{"date-parts":[[2023,7,13]],"date-time":"2023-07-13T00:00:00Z","timestamp":1689206400000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0"},{"start":{"date-parts":[[2023,7,13]],"date-time":"2023-07-13T00:00:00Z","timestamp":1689206400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0"}],"funder":[{"DOI":"10.13039\/501100002347","name":"Bundesministerium f\u00fcr Bildung und Forschung","doi-asserted-by":"publisher","award":["01EO1504"],"award-info":[{"award-number":["01EO1504"]}],"id":[{"id":"10.13039\/501100002347","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100008769","name":"Julius-Maximilians-Universit\u00e4t W\u00fcrzburg","doi-asserted-by":"publisher","award":["Open Access Publication Fund"],"award-info":[{"award-number":["Open Access Publication Fund"]}],"id":[{"id":"10.13039\/501100008769","id-type":"DOI","asserted-by":"publisher"}]},{"name":"Universit\u00e4tsklinikum W\u00fcrzburg"}],"content-domain":{"domain":["link.springer.com"],"crossmark-restriction":false},"short-container-title":["Herz"],"published-print":{"date-parts":[[2024,2]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Background<\/jats:title><jats:p>Invasive cardiac output (CO) is measured with the thermodilution (TD) or the indirect Fick method (iFM) in right heart catheterization (RHC). The iFM estimates CO using approximation formulas for oxygen consumption (<jats:inline-formula><jats:alternatives><jats:tex-math>$$\\dot {\\mathrm{V}}$$<\/jats:tex-math><mml:math xmlns:mml=\"http:\/\/www.w3.org\/1998\/Math\/MathML\"><mml:mover><mml:mi>V<\/mml:mi><mml:mi>\u0307<\/mml:mi><\/mml:mover><\/mml:math><\/jats:alternatives><\/jats:inline-formula>O<jats:sub>2<\/jats:sub>), but there are significant discrepancies (&gt;\u202f20%) between both methods. Although regularly applied, the formula proposed by Krakau has not been validated. We compared the CO discrepancies between the Krakau formula with the reference (TD) and three established formulas and investigated whether alterations assessed in cardiac magnetic resonance imaging (CMR) determined the extent of the deviations.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>This retrospective study included 188\u00a0patients aged 63\u202f\u00b1\u200914\u00a0years (30% women) receiving both CMR and RHC. The CO was measured with TD or with the iFM using the formulas by Krakau, LaFarge, Dehmer, and Bergstra for<jats:inline-formula><jats:alternatives><jats:tex-math>$$\\dot {\\mathrm{V}}$$<\/jats:tex-math><mml:math xmlns:mml=\"http:\/\/www.w3.org\/1998\/Math\/MathML\"><mml:mover><mml:mi>V<\/mml:mi><mml:mi>\u0307<\/mml:mi><\/mml:mover><\/mml:math><\/jats:alternatives><\/jats:inline-formula>O2 estimation (iFM-K\/-L\/-D\/-B). Percentage errors were calculated as twice the standard deviation of the difference between two CO methods divided by their means; a\u00a0cut-off of &lt;\u202f30% was regarded as acceptable<jats:italic>.<\/jats:italic>The iFM and TD-derived CO ratio was built, and deviations &gt;\u202f20% were counted. Logistic regression analyses were performed to identify determinants of a\u00a0deviation of &gt;\u202f20%.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>The TD-derived CO (5.5\u202f\u00b1\u20091.7\u202fL\/min) was significantly different from all iFM (K: 4.8\u202f\u00b1\u20091.6, L: 4.3\u202f\u00b1\u20091.6; D: 4.8\u202f\u00b1\u20091.5\u202fL\/min; B: 5.4\u202f\u00b1\u20091.8\u202fL\/min all<jats:italic>p<\/jats:italic>\u202f&lt;\u20090.05). The iFM-K-CO differed from all methods (<jats:italic>p<\/jats:italic>\u202f&lt;\u20090.001) except iFM\u2011D (<jats:italic>p<\/jats:italic>\u202f=\u20090.19). Percentage errors between TD-CO and iFM-K\/-L\/-D\/-B were all beyond the acceptance limit (44\/45\/44\/43%), while percentage errors between iFM\u2011K and other iFM were all &lt;\u202f16%. None of the parameters measured in CMR was predictive of a\u00a0discrepancy of &gt;\u202f20% between both methods.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>The Krakau formula was comparable to other iFM in estimating CO levels, but none showed satisfactory agreement with the TD method. Improved derivation cohorts for<jats:inline-formula><jats:alternatives><jats:tex-math>$$\\dot {\\mathrm{V}}$$<\/jats:tex-math><mml:math xmlns:mml=\"http:\/\/www.w3.org\/1998\/Math\/MathML\"><mml:mover><mml:mi>V<\/mml:mi><mml:mi>\u0307<\/mml:mi><\/mml:mover><\/mml:math><\/jats:alternatives><\/jats:inline-formula>O<jats:sub>2<\/jats:sub>estimation are needed that better reflect today\u2019s patients undergoing RHC.<\/jats:p><\/jats:sec>","DOI":"10.1007\/s00059-023-05196-0","type":"journal-article","created":{"date-parts":[[2023,7,13]],"date-time":"2023-07-13T08:02:47Z","timestamp":1689235367000},"page":"50-59","update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":3,"title":["Accuracy of VO2 estimation according to the widely used Krakau formula for the prediction of cardiac output","Genauigkeit der VO2-Sch\u00e4tzung nach der weitverbreiteten Krakau-Formel zur Pr\u00e4diktion der kardialen Pumpleistung"],"prefix":"10.1007","volume":"49","author":[{"given":"Theresa","family":"Reiter","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Julia","family":"Kerzner","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Georg","family":"Fette","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Stefan","family":"Frantz","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Wolfram","family":"Voelker","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Georg","family":"Ertl","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Wolfgang","family":"Bauer","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Caroline","family":"Morbach","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Stefan","family":"St\u00f6rk","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5598-5359","authenticated-orcid":false,"given":"G\u00fclmisal","family":"G\u00fcder","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"297","published-online":{"date-parts":[[2023,7,13]]},"reference":[{"issue":"38","key":"5196_CR1","doi-asserted-by":"publisher","first-page":"3618","DOI":"10.1093\/eurheartj\/ehac237","volume":"43","author":"M Humbert","year":"2022","unstructured":"Humbert\u00a0M, Kovacs\u00a0G, Hoeper\u00a0MM, Badagliacca\u00a0R, Berger\u00a0RMF, Brida\u00a0M et al (2022) 2022 ESC\/ERS Guidelines for the diagnosis and treatment of pulmonary hypertension Developed by the task force for the diagnosis and treatment of pulmonary hypertension of the European Society of Cardiology (ESC) and the European Respiratory Society (ERS). Endorsed by the International Society for Heart and Lung Transplantation (ISHLT) and the European Reference Network on rare respiratory diseases (ERN-LUNG). Eur Heart\u00a0J 43(38):3618\u20133731. https:\/\/doi.org\/10.1093\/eurheartj\/ehac237","journal-title":"Eur Heart J"},{"issue":"3","key":"5196_CR2","doi-asserted-by":"publisher","first-page":"138","DOI":"10.1097\/CRD.0000000000000223","volume":"27","author":"EE Argueta","year":"2019","unstructured":"Argueta\u00a0EE, Paniagua\u00a0D (2019) Thermodilution cardiac output: a concept over 250 years in the making. Cardiol Rev 27(3):138\u2013144. https:\/\/doi.org\/10.1097\/CRD.0000000000000223","journal-title":"Cardiol Rev"},{"issue":"3","key":"5196_CR3","doi-asserted-by":"publisher","first-page":"153","DOI":"10.1113\/expphysiol.1954.sp001067","volume":"39","author":"G Fegler","year":"1954","unstructured":"Fegler\u00a0G (1954) Measurement of cardiac output in anaesthetized animals by a\u00a0thermodilution method. Q\u00a0J Exp Physiol Cogn Med Sci 39(3):153\u2013164. https:\/\/doi.org\/10.1113\/expphysiol.1954.sp001067","journal-title":"Q J Exp Physiol Cogn Med Sci"},{"issue":"9","key":"5196_CR4","doi-asserted-by":"publisher","first-page":"447","DOI":"10.1056\/NEJM197008272830902","volume":"283","author":"HJ Swan","year":"1970","unstructured":"Swan\u00a0HJ, Ganz\u00a0W, Forrester\u00a0J, Marcus\u00a0H, Diamond\u00a0G, Chonette\u00a0D (1970) Catheterization of the heart in man with use of a\u00a0flow-directed balloon-tipped catheter. N\u00a0Engl J Med 283(9):447\u2013451. https:\/\/doi.org\/10.1056\/NEJM197008272830902","journal-title":"N Engl J Med"},{"issue":"2","key":"5196_CR5","doi-asserted-by":"publisher","first-page":"142","DOI":"10.1007\/BF03011312","volume":"40","author":"T Nishikawa","year":"1993","unstructured":"Nishikawa\u00a0T, Dohi\u00a0S (1993) Errors in the measurement of cardiac output by thermodilution. Can J Anaesth 40(2):142\u2013153. https:\/\/doi.org\/10.1007\/BF03011312","journal-title":"Can J Anaesth"},{"key":"5196_CR6","first-page":"290","volume":"2","author":"A Fick","year":"1870","unstructured":"Fick\u00a0A (1870) Ueber die Messung des Blutquantums in den Herzventrikeln. Sitz Phys Med Ges W\u00fcrzbrg 2:290\u2013291","journal-title":"Sitz Phys Med Ges W\u00fcrzbrg"},{"issue":"4","key":"5196_CR7","doi-asserted-by":"publisher","first-page":"256","DOI":"10.1016\/j.carrev.2016.02.013","volume":"17","author":"Z Fanari","year":"2016","unstructured":"Fanari\u00a0Z, Grove\u00a0M, Rajamanickam\u00a0A, Hammami\u00a0S, Walls\u00a0C, Kolm\u00a0P et\u00a0al (2016) Cardiac output determination using a\u00a0widely available direct continuous oxygen consumption measuring device: a\u00a0practical way to get back to the gold standard. Cardiovasc Revasc Med 17(4):256\u2013261. https:\/\/doi.org\/10.1016\/j.carrev.2016.02.013","journal-title":"Cardiovasc Revasc Med"},{"issue":"1","key":"5196_CR8","doi-asserted-by":"publisher","first-page":"23","DOI":"10.1093\/cvr\/4.1.23","volume":"4","author":"CG LaFarge","year":"1970","unstructured":"LaFarge\u00a0CG, Miettinen\u00a0OS (1970) The estimation of oxygen consumption. Cardiovasc Res 4(1):23\u201330. https:\/\/doi.org\/10.1093\/cvr\/4.1.23","journal-title":"Cardiovasc Res"},{"issue":"8","key":"5196_CR9","doi-asserted-by":"publisher","first-page":"436","DOI":"10.1002\/clc.4960050803","volume":"5","author":"GJ Dehmer","year":"1982","unstructured":"Dehmer\u00a0GJ, Firth\u00a0BG, Hillis\u00a0LD (1982) Oxygen consumption in adult patients during cardiac catheterization. Clin Cardiol 5(8):436\u2013440. https:\/\/doi.org\/10.1002\/clc.4960050803","journal-title":"Clin Cardiol"},{"issue":"5","key":"5196_CR10","doi-asserted-by":"publisher","first-page":"698","DOI":"10.1093\/oxfordjournals.eurheartj.a060976","volume":"16","author":"A Bergstra","year":"1995","unstructured":"Bergstra\u00a0A, van Dijk\u00a0RB, Hillege\u00a0HL, Lie\u00a0KI, Mook\u00a0GA (1995) Assumed oxygen consumption based on calculation from dye dilution cardiac output: an improved formula. Eur Heart\u00a0J 16(5):698\u2013703. https:\/\/doi.org\/10.1093\/oxfordjournals.eurheartj.a060976","journal-title":"Eur Heart J"},{"issue":"12","key":"5196_CR11","doi-asserted-by":"publisher","first-page":"e0226561","DOI":"10.1371\/journal.pone.0226561","volume":"14","author":"KP Kresoja","year":"2019","unstructured":"Kresoja\u00a0KP, Faragli\u00a0A, Abawi\u00a0D, Paul\u00a0O, Pieske\u00a0B, Post\u00a0H et al (2019) Thermodilution vs estimated Fick cardiac output measurement in an elderly cohort of patients: a single-centre experience. PLoS ONE 14(12):e226561. https:\/\/doi.org\/10.1371\/journal.pone.0226561","journal-title":"PLoS ONE"},{"issue":"2","key":"5196_CR12","doi-asserted-by":"crossref","first-page":"E100","DOI":"10.25270\/jic\/20.00387","volume":"33","author":"P Agasthi","year":"2021","unstructured":"Agasthi\u00a0P, Miranda\u00a0WR, Egbe\u00a0AC (2021) Discordance between measured vs calculated oxygen consumption in adults with congenital heart disease: limitations and clinical implications. J\u00a0Invasive Cardiol 33(2):E100\u2013E107","journal-title":"J Invasive Cardiol"},{"issue":"2","key":"5196_CR13","doi-asserted-by":"publisher","first-page":"203","DOI":"10.1161\/CIRCULATIONAHA.113.003334","volume":"129","author":"N Narang","year":"2014","unstructured":"Narang\u00a0N, Thibodeau\u00a0JT, Levine\u00a0BD, Gore\u00a0MO, Ayers\u00a0CR, Lange\u00a0RA et\u00a0al (2014) Inaccuracy of estimated resting oxygen uptake in the clinical setting. Circulation 129(2):203\u2013210. https:\/\/doi.org\/10.1161\/CIRCULATIONAHA.113.003334","journal-title":"Circulation"},{"issue":"2","key":"5196_CR14","doi-asserted-by":"publisher","first-page":"85","DOI":"10.1023\/a:1009982611386","volume":"15","author":"LA Critchley","year":"1999","unstructured":"Critchley\u00a0LA, Critchley\u00a0JA (1999) A meta-analysis of studies using bias and precision statistics to compare cardiac output measurement techniques. J\u00a0Clin Monit Comput 15(2):85\u201391. https:\/\/doi.org\/10.1023\/a:1009982611386","journal-title":"J Clin Monit Comput"},{"issue":"10","key":"5196_CR15","doi-asserted-by":"publisher","first-page":"1090","DOI":"10.1001\/jamacardio.2017.2945","volume":"2","author":"AR Opotowsky","year":"2017","unstructured":"Opotowsky\u00a0AR, Hess\u00a0E, Maron\u00a0BA, Brittain\u00a0EL, Baron\u00a0AE, Maddox\u00a0TM et\u00a0al (2017) Thermodilution vs estimated Fick cardiac output measurement in clinical practice: an analysis of mortality from the veterans affairs clinical assessment, reporting, and tracking (VA CART) program and Vanderbilt University. JAMA Cardiol 2(10):1090\u20131099. https:\/\/doi.org\/10.1001\/jamacardio.2017.2945","journal-title":"JAMA Cardiol"},{"issue":"4","key":"5196_CR16","doi-asserted-by":"publisher","first-page":"261","DOI":"10.1155\/2012\/261793","volume":"19","author":"WH Fares","year":"2012","unstructured":"Fares\u00a0WH, Blanchard\u00a0SK, Stouffer\u00a0GA, Chang\u00a0PP, Rosamond\u00a0WD, Ford\u00a0HJ et\u00a0al (2012) Thermodilution and Fick cardiac outputs differ: impact on pulmonary hypertension evaluation. Can Respir\u00a0J 19(4):261\u2013266. https:\/\/doi.org\/10.1155\/2012\/261793","journal-title":"Can Respir J"},{"key":"5196_CR17","volume-title":"Das Herzkatheterbuch","author":"I Krakau","year":"1999","unstructured":"Krakau\u00a0I (1999) Das Herzkatheterbuch. Thieme, Stuttgart"},{"issue":"9","key":"5196_CR18","doi-asserted-by":"publisher","first-page":"778","DOI":"10.1007\/s00392-018-1245-z","volume":"107","author":"M Kaspar","year":"2018","unstructured":"Kaspar\u00a0M, Fette\u00a0G, Guder\u00a0G, Seidlmayer\u00a0L, Ertl\u00a0M, Dietrich\u00a0G et\u00a0al (2018) Underestimated prevalence of heart failure in hospital inpatients: a\u00a0comparison of ICD codes and discharge letter information. Clin Res Cardiol 107(9):778\u2013787. https:\/\/doi.org\/10.1007\/s00392-018-1245-z","journal-title":"Clin Res Cardiol"},{"issue":"3","key":"5196_CR19","doi-asserted-by":"publisher","first-page":"233","DOI":"10.1093\/ehjci\/jev014","volume":"16","author":"RM Lang","year":"2015","unstructured":"Lang\u00a0RM, Badano\u00a0LP, Mor-Avi\u00a0V, Afilalo\u00a0J, Armstrong\u00a0A, Ernande\u00a0L et al (2015) Recommendations for cardiac chamber quantification by echocardiography in adults: an update from the American Society of Echocardiography and the European Association of Cardiovascular Imaging. Eur Heart J Cardiovasc Imaging 16(3):233\u2013270. https:\/\/doi.org\/10.1093\/ehjci\/jev014","journal-title":"Eur Heart J Cardiovasc Imaging"},{"issue":"1","key":"5196_CR20","doi-asserted-by":"publisher","first-page":"19","DOI":"10.1186\/s12968-020-00610-6","volume":"22","author":"J Schulz-Menger","year":"2020","unstructured":"Schulz-Menger\u00a0J, Bluemke\u00a0DA, Bremerich\u00a0J, Flamm\u00a0SD, Fogel\u00a0MA, Friedrich\u00a0MG et al (2020) Standardized image interpretation and post-processing in cardiovascular magnetic resonance\u20142020 update : Society for Cardiovascular Magnetic Resonance (SCMR): Board of Trustees Task Force on Standardized Post-Processing. J\u00a0Cardiovasc Magn Reson 22(1):19. https:\/\/doi.org\/10.1186\/s12968-020-00610-6","journal-title":"J Cardiovasc Magn Reson"},{"issue":"5","key":"5196_CR21","first-page":"303","volume":"5","author":"D Dubois","year":"1989","unstructured":"Dubois\u00a0D, Dubois\u00a0EF (1989) Nutrition Metabolism Classic\u2014a\u00a0Formula to Estimate the Approximate Surface-Area If Height and Weight Be Known (Reprinted from Archives Internal Medicine, Vol 17, Pg 863, 1916). Nutrition 5(5):303\u2013311","journal-title":"Nutrition"},{"issue":"138","key":"5196_CR22","doi-asserted-by":"publisher","first-page":"642","DOI":"10.1183\/16000617.0062-2015","volume":"24","author":"S Rosenkranz","year":"2015","unstructured":"Rosenkranz\u00a0S, Preston\u00a0IR (2015) Right heart catheterisation: best practice and pitfalls in pulmonary hypertension. Eur Respir Rev 24(138):642\u2013652. https:\/\/doi.org\/10.1183\/16000617.0062-2015","journal-title":"Eur Respir Rev"},{"issue":"3","key":"5196_CR23","doi-asserted-by":"publisher","first-page":"467","DOI":"10.1016\/j.hfc.2018.03.011","volume":"14","author":"M D\u2019Alto","year":"2018","unstructured":"D\u2019Alto\u00a0M, Dimopoulos\u00a0K, Coghlan\u00a0JG, Kovacs\u00a0G, Rosenkranz\u00a0S, Naeije\u00a0R (2018) Right heart catheterization for the diagnosis of pulmonary hypertension: controversies and practical issues. Heart Fail Clin 14(3):467\u2013477. https:\/\/doi.org\/10.1016\/j.hfc.2018.03.011","journal-title":"Heart Fail Clin"},{"issue":"8476","key":"5196_CR24","doi-asserted-by":"publisher","first-page":"307","DOI":"10.1016\/s0140-6736(86)90837-8","volume":"1","author":"JM Bland","year":"1986","unstructured":"Bland\u00a0JM, Altman\u00a0DG (1986) Statistical methods for assessing agreement between two methods of clinical measurement. Lancet 1(8476):307\u2013310. https:\/\/doi.org\/10.1016\/s0140-6736(86)90837-8","journal-title":"Lancet"},{"issue":"2","key":"5196_CR25","doi-asserted-by":"publisher","first-page":"147","DOI":"10.1136\/heartjnl-2015-307786","volume":"102","author":"P Callan","year":"2016","unstructured":"Callan\u00a0P, Clark\u00a0AL (2016) Right heart catheterisation: indications and interpretation. Heart 102(2):147\u2013157. https:\/\/doi.org\/10.1136\/heartjnl-2015-307786","journal-title":"Heart"},{"issue":"36","key":"5196_CR26","doi-asserted-by":"publisher","first-page":"3599","DOI":"10.1093\/eurheartj\/ehab368","volume":"42","author":"TA McDonagh","year":"2021","unstructured":"McDonagh\u00a0TA, Metra\u00a0M, Adamo\u00a0M, Gardner\u00a0RS, Baumbach\u00a0A, Bohm\u00a0M et\u00a0al (2021) 2021 ESC Guidelines for the diagnosis and treatment of acute and chronic heart failure. Eur Heart\u00a0J 42(36):3599\u20133726. https:\/\/doi.org\/10.1093\/eurheartj\/ehab368","journal-title":"Eur Heart J"},{"issue":"3","key":"5196_CR27","doi-asserted-by":"publisher","first-page":"799","DOI":"10.1213\/ANE.0b013e3181cc885a","volume":"110","author":"DA Reuter","year":"2010","unstructured":"Reuter\u00a0DA, Huang\u00a0C, Edrich\u00a0T, Shernan\u00a0SK, Eltzschig\u00a0HK (2010) Cardiac output monitoring using indicator-dilution techniques: basics, limits, and perspectives. Anesth Analg 110(3):799\u2013811. https:\/\/doi.org\/10.1213\/ANE.0b013e3181cc885a","journal-title":"Anesth Analg"},{"issue":"8","key":"5196_CR28","doi-asserted-by":"publisher","first-page":"664","DOI":"10.1016\/j.cardfail.2019.02.004","volume":"26","author":"G Grafton","year":"2020","unstructured":"Grafton\u00a0G, Cascino\u00a0TM, Perry\u00a0D, Ashur\u00a0C, Koelling\u00a0TM (2020) Resting oxygen consumption and heart failure: importance of measurement for determination of cardiac output with the use of the fick principle. J\u00a0Card Fail 26(8):664\u2013672. https:\/\/doi.org\/10.1016\/j.cardfail.2019.02.004","journal-title":"J Card Fail"},{"issue":"8","key":"5196_CR29","doi-asserted-by":"publisher","first-page":"705","DOI":"10.1161\/CIRCULATIONAHA.119.041614","volume":"140","author":"G Khirfan","year":"2019","unstructured":"Khirfan\u00a0G, Ahmed\u00a0MK, Almaaitah\u00a0S, Almoushref\u00a0A, Agmy\u00a0GM, Dweik\u00a0RA et\u00a0al (2019) Comparison of different methods to estimate cardiac index in pulmonary arterial hypertension. Circulation 140(8):705\u2013707. https:\/\/doi.org\/10.1161\/CIRCULATIONAHA.119.041614","journal-title":"Circulation"},{"key":"5196_CR30","doi-asserted-by":"publisher","DOI":"10.1055\/b-002-23562","author":"C Mewis","year":"2006","unstructured":"Mewis\u00a0C, Riessen\u00a0R (2006) Spyridopoulos I. Kardiol Compact. https:\/\/doi.org\/10.1055\/b-002-23562","journal-title":"Kardiol Compact"},{"key":"5196_CR31","doi-asserted-by":"publisher","DOI":"10.1007\/978-3-662-53182-2","volume-title":"Repetitorium Internistische Intensivmedizin","author":"G Michels","year":"2017","unstructured":"Michels\u00a0G, Kochanek\u00a0M (2017) Repetitorium Internistische Intensivmedizin, 3rd\u00a0edn. Springer, Berlin","edition":"3"},{"issue":"1","key":"5196_CR32","doi-asserted-by":"publisher","first-page":"53","DOI":"10.1023\/a:1014394626363","volume":"18","author":"SE Petersen","year":"2002","unstructured":"Petersen\u00a0SE, Voigtlander\u00a0T, Kreitner\u00a0KF, Kalden\u00a0P, Wittlinger\u00a0T, Scharhag\u00a0J et al (2002) Quantification of shunt volumes in congenital heart diseases using a\u00a0breath-hold MR phase contrast technique\u2014comparison with oximetry. Int J Cardiovasc Imaging 18(1):53\u201360. https:\/\/doi.org\/10.1023\/a:1014394626363","journal-title":"Int J Cardiovasc Imaging"},{"issue":"10","key":"5196_CR33","doi-asserted-by":"publisher","first-page":"597","DOI":"10.1093\/eurheartj\/eht531","volume":"36","author":"RP Engelberger","year":"2015","unstructured":"Engelberger\u00a0RP, Moschovitis\u00a0A, Fahrni\u00a0J, Willenberg\u00a0T, Baumann\u00a0F, Diehm\u00a0N et al (2015) Fixed low-dose ultrasound-assisted catheter-directed thrombolysis for intermediate and high-risk pulmonary embolism. Eur Heart\u00a0J 36(10):597\u2013604. https:\/\/doi.org\/10.1093\/eurheartj\/eht531","journal-title":"Eur Heart J"},{"issue":"4","key":"5196_CR34","doi-asserted-by":"publisher","first-page":"417","DOI":"10.1016\/0002-9343(89)90339-2","volume":"86","author":"RG Cigarroa","year":"1989","unstructured":"Cigarroa\u00a0RG, Lange\u00a0RA, Williams\u00a0RH, Bedotto\u00a0JB, Hillis\u00a0LD (1989) Underestimation of cardiac output by thermodilution in patients with tricuspid regurgitation. Am J Med 86(4):417\u2013420. https:\/\/doi.org\/10.1016\/0002-9343(89)90339-2","journal-title":"Am J Med"},{"issue":"8","key":"5196_CR35","doi-asserted-by":"publisher","first-page":"1117","DOI":"10.1007\/s00134-002-1352-0","volume":"28","author":"M Balik","year":"2002","unstructured":"Balik\u00a0M, Pachl\u00a0J, Hendl\u00a0J (2002) Effect of the degree of tricuspid regurgitation on cardiac output measurements by thermodilution. Intensive Care Med 28(8):1117\u20131121. https:\/\/doi.org\/10.1007\/s00134-002-1352-0","journal-title":"Intensive Care Med"},{"issue":"4","key":"5196_CR36","doi-asserted-by":"publisher","first-page":"538","DOI":"10.1016\/0002-9149(92)91205-i","volume":"70","author":"T Konishi","year":"1992","unstructured":"Konishi\u00a0T, Nakamura\u00a0Y, Morii\u00a0I, Himura\u00a0Y, Kumada\u00a0T, Kawai\u00a0C (1992) Comparison of thermodilution and Fick methods for measurement of cardiac output in tricuspid regurgitation. Am J Cardiol 70(4):538\u2013539. https:\/\/doi.org\/10.1016\/0002-9149(92)91205-i","journal-title":"Am J Cardiol"},{"issue":"14","key":"5196_CR37","doi-asserted-by":"publisher","first-page":"945","DOI":"10.1016\/0002-9149(89)90851-5.","volume":"64","author":"MA Hamilton","year":"1989","unstructured":"Hamilton\u00a0MA, Stevenson\u00a0LW, Woo\u00a0M, Child\u00a0JS, Tillisch\u00a0JH (1989) Effect of tricuspid regurgitation on the reliability of the thermodilution cardiac output technique in congestive heart failure. Am J Cardiol 64(14):945\u2013948. https:\/\/doi.org\/10.1016\/0002-9149(89)90851-5","journal-title":"Am J Cardiol"},{"issue":"3 (Pt 1)","key":"5196_CR38","doi-asserted-by":"publisher","first-page":"246","DOI":"10.1007\/BF03015161","volume":"34","author":"HI Kashtan","year":"1987","unstructured":"Kashtan\u00a0HI, Maitland\u00a0A, Salerno\u00a0TA, Lichtenstein\u00a0SV, Byrick\u00a0RJ (1987) Effects of tricuspid regurgitation on thermodilution cardiac output: studies in an animal model. Can J Anaesth 34(3 (Pt 1)):246\u2013251. https:\/\/doi.org\/10.1007\/BF03015161","journal-title":"Can J Anaesth"},{"issue":"7","key":"5196_CR39","first-page":"212","volume":"88","author":"Z Fanari","year":"2016","unstructured":"Fanari\u00a0Z, Rajamanickam\u00a0A, Grove\u00a0M, Hammami\u00a0S, Walls\u00a0C, Kolm\u00a0P et\u00a0al (2016) Impact of catheterization lab computer software settings on Hemodynamic assessment of aortic stenosis. Del Med\u00a0J 88(7):212\u2013217","journal-title":"Del Med J"}],"container-title":["Herz"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/link.springer.com\/content\/pdf\/10.1007\/s00059-023-05196-0.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/link.springer.com\/article\/10.1007\/s00059-023-05196-0\/fulltext.html","content-type":"text\/html","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/link.springer.com\/content\/pdf\/10.1007\/s00059-023-05196-0.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2024,10,24]],"date-time":"2024-10-24T02:08:54Z","timestamp":1729735734000},"score":1,"resource":{"primary":{"URL":"https:\/\/link.springer.com\/10.1007\/s00059-023-05196-0"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2023,7,13]]},"references-count":39,"journal-issue":{"issue":"1","published-print":{"date-parts":[[2024,2]]}},"alternative-id":["5196"],"URL":"https:\/\/doi.org\/10.1007\/s00059-023-05196-0","relation":{},"ISSN":["0340-9937","1615-6692"],"issn-type":[{"value":"0340-9937","type":"print"},{"value":"1615-6692","type":"electronic"}],"subject":[],"published":{"date-parts":[[2023,7,13]]},"assertion":[{"value":"14 March 2023","order":1,"name":"received","label":"Received","group":{"name":"ArticleHistory","label":"Article History"}},{"value":"21 May 2023","order":2,"name":"revised","label":"Revised","group":{"name":"ArticleHistory","label":"Article History"}},{"value":"1 June 2023","order":3,"name":"accepted","label":"Accepted","group":{"name":"ArticleHistory","label":"Article History"}},{"value":"13 July 2023","order":4,"name":"first_online","label":"First Online","group":{"name":"ArticleHistory","label":"Article History"}},{"order":1,"name":"Ethics","group":{"name":"EthicsHeading","label":"Declarations"}},{"value":"T.\u00a0Reiter, J.\u00a0Kerzner, G.\u00a0Fette, S.\u00a0Frantz, W.\u00a0Voelker, G.\u00a0Ertl, W.\u00a0Bauer, C.\u00a0Morbach, S.\u00a0St\u00f6rk and G.\u00a0G\u00fcder declare that they have no competing interests.","order":2,"name":"Ethics","group":{"name":"EthicsHeading","label":"Conflict of interest"}},{"value":"All procedures performed in studies involving human participants or on human tissue were in accordance with the ethical standards of the institutional and\/or national research committee and with the 1975 Helsinki declaration and its later amendments or comparable ethical standards. Approval of the ethical committee was waived as the Data Ware House runs on standard operating procedures that are controlled and approved by the institution\u2019s data protection officer. Informed consent was waived due to the retrospective nature of the study and anonymous data analysis.","order":3,"name":"Ethics","group":{"name":"EthicsHeading","label":"Conflict of interest"}}]}}