Neither the Accuracy nor the Precision of Thermal Dilution Cardiac Output Measurements Is Altered by Acute Tricuspid Regurgitation in Pigs
Whether measurement of cardiac output using the thermal dilution technique (TDCO) is valid in the presence of tricuspid regurgitation (TR) is controversial. We assessed the accuracy and precision of the technique in pigs by comparison with data from an electromagnetic flowmeter on the aorta (EMCO)....
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| Veröffentlicht in: | Anesthesia and analgesia 2004-04, Vol.98 (4), p.884-890 |
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| creator | Buffington, Charles W. Nystrom, Elisabet U. M. |
| description | Whether measurement of cardiac output using the thermal dilution technique (TDCO) is valid in the presence of tricuspid regurgitation (TR) is controversial. We assessed the accuracy and precision of the technique in pigs by comparison with data from an electromagnetic flowmeter on the aorta (EMCO). TR was created with sutures that immobilized the free-wall leaflets of the tricuspid valve, and cardiac output was adjusted with dobutamine to give values comparable to control measurements. TR reduced forward stroke volume from 17.2 to 12.6 mL/beat and caused the right atrium to dilate and pulse in synchrony with the right ventricle. Acute TR did not affect the linear regression relation between TDCO and EMCO and did not alter the correlation coefficient (r = 0.94 during both control and TR). These data demonstrate that acute TR does not affect the accuracy or precision of TDCO in pigs. |
| doi_str_mv | 10.1213/01.ANE.0000105923.09732.93 |
| format | Article |
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M.</creatorcontrib><title>Neither the Accuracy nor the Precision of Thermal Dilution Cardiac Output Measurements Is Altered by Acute Tricuspid Regurgitation in Pigs</title><title>Anesthesia and analgesia</title><addtitle>Anesth Analg</addtitle><description>Whether measurement of cardiac output using the thermal dilution technique (TDCO) is valid in the presence of tricuspid regurgitation (TR) is controversial. We assessed the accuracy and precision of the technique in pigs by comparison with data from an electromagnetic flowmeter on the aorta (EMCO). TR was created with sutures that immobilized the free-wall leaflets of the tricuspid valve, and cardiac output was adjusted with dobutamine to give values comparable to control measurements. TR reduced forward stroke volume from 17.2 to 12.6 mL/beat and caused the right atrium to dilate and pulse in synchrony with the right ventricle. Acute TR did not affect the linear regression relation between TDCO and EMCO and did not alter the correlation coefficient (r = 0.94 during both control and TR). These data demonstrate that acute TR does not affect the accuracy or precision of TDCO in pigs.</description><subject>Anesthesia</subject><subject>Anesthesia, Inhalation</subject><subject>Anesthesia. Intensive care medicine. Transfusions. Cell therapy and gene therapy</subject><subject>Anesthetics, Inhalation</subject><subject>Animals</subject><subject>Biological and medical sciences</subject><subject>Cardiac Catheterization</subject><subject>Cardiac Output - drug effects</subject><subject>Cardiac Output - physiology</subject><subject>Cardiotonic Agents</subject><subject>Dobutamine</subject><subject>Halothane</subject><subject>Hemodynamics - drug effects</subject><subject>Indicator Dilution Techniques</subject><subject>Medical sciences</subject><subject>Reproducibility of Results</subject><subject>Swine</subject><subject>Tricuspid Valve Insufficiency - physiopathology</subject><issn>0003-2999</issn><issn>1526-7598</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2004</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNpNkWuLEzEUhoMobq3-BQmCfpsxl8lk4rdSV11Ydxepn0OaOdNG51JzYelf8FebaQtrAjlweM57yPsi9I6SkjLKPxJaru6uS5IPJUIxXhIlOSsVf4YWVLC6kEI1z9EiA7xgSqkr9CqEXye-qV-iKypIRUUtF-jvHbi4B4_zg1fWJm_sEY_TufHgwbrgphFPHd5kbDA9_uz6FOfe2vjWGYvvUzykiL-DCcnDAGMM-CbgVR_BQ4u3xyycIuCNdzaFg2vxD9glv3PRnHTciB_cLrxGLzrTB3hzqUv088v1Zv2tuL3_erNe3Ra2qhgrBFNckM6IhlvJOtjW0Am-5WAkoRWV0hBhTc27hjasJrRt2obQWgChkneW8CX6cNY9-OlPghD14IKFvjcjTCloSWVNpZjBT2fQ-ikED50-eDcYf9SU6DkJTajOSeinJPQpCa14Hn572ZK2A7RPoxfrM_D-AphgTd95M2av_-MkpSp_comqM_c4zYaG3316BK_3YPq4P60mgquCEVLlS0gxdxj_B525oaQ</recordid><startdate>20040401</startdate><enddate>20040401</enddate><creator>Buffington, Charles W.</creator><creator>Nystrom, Elisabet U. 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Cell therapy and gene therapy</topic><topic>Anesthetics, Inhalation</topic><topic>Animals</topic><topic>Biological and medical sciences</topic><topic>Cardiac Catheterization</topic><topic>Cardiac Output - drug effects</topic><topic>Cardiac Output - physiology</topic><topic>Cardiotonic Agents</topic><topic>Dobutamine</topic><topic>Halothane</topic><topic>Hemodynamics - drug effects</topic><topic>Indicator Dilution Techniques</topic><topic>Medical sciences</topic><topic>Reproducibility of Results</topic><topic>Swine</topic><topic>Tricuspid Valve Insufficiency - physiopathology</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Buffington, Charles W.</creatorcontrib><creatorcontrib>Nystrom, Elisabet U. 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M.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Neither the Accuracy nor the Precision of Thermal Dilution Cardiac Output Measurements Is Altered by Acute Tricuspid Regurgitation in Pigs</atitle><jtitle>Anesthesia and analgesia</jtitle><addtitle>Anesth Analg</addtitle><date>2004-04-01</date><risdate>2004</risdate><volume>98</volume><issue>4</issue><spage>884</spage><epage>890</epage><pages>884-890</pages><issn>0003-2999</issn><eissn>1526-7598</eissn><coden>AACRAT</coden><abstract>Whether measurement of cardiac output using the thermal dilution technique (TDCO) is valid in the presence of tricuspid regurgitation (TR) is controversial. We assessed the accuracy and precision of the technique in pigs by comparison with data from an electromagnetic flowmeter on the aorta (EMCO). TR was created with sutures that immobilized the free-wall leaflets of the tricuspid valve, and cardiac output was adjusted with dobutamine to give values comparable to control measurements. TR reduced forward stroke volume from 17.2 to 12.6 mL/beat and caused the right atrium to dilate and pulse in synchrony with the right ventricle. Acute TR did not affect the linear regression relation between TDCO and EMCO and did not alter the correlation coefficient (r = 0.94 during both control and TR). These data demonstrate that acute TR does not affect the accuracy or precision of TDCO in pigs.</abstract><cop>Hagerstown, MD</cop><pub>International Anesthesia Research Society</pub><pmid>15041567</pmid><doi>10.1213/01.ANE.0000105923.09732.93</doi><tpages>7</tpages><oa>free_for_read</oa></addata></record> |
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| source | MEDLINE; Journals@Ovid LWW Legacy Archive; Journals@Ovid Complete; EZB-FREE-00999 freely available EZB journals |
| subjects | Anesthesia Anesthesia, Inhalation Anesthesia. Intensive care medicine. Transfusions. Cell therapy and gene therapy Anesthetics, Inhalation Animals Biological and medical sciences Cardiac Catheterization Cardiac Output - drug effects Cardiac Output - physiology Cardiotonic Agents Dobutamine Halothane Hemodynamics - drug effects Indicator Dilution Techniques Medical sciences Reproducibility of Results Swine Tricuspid Valve Insufficiency - physiopathology |
| title | Neither the Accuracy nor the Precision of Thermal Dilution Cardiac Output Measurements Is Altered by Acute Tricuspid Regurgitation in Pigs |
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