Accuracy of Transcutaneous CO 2 Values Compared With Arterial and Capillary Blood Gases
Transcutaneous monitors are utilized to monitor a patient's respiratory status. Some patients have similar values when comparing transcutaneous carbon dioxide (P ) values with blood gas analysis, whereas others show extreme variability. A retrospective review of data was performed to determine...
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| Veröffentlicht in: | Respiratory care 2018-07, Vol.63 (7), p.907-912 |
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| creator | Lambert, Laura L Baldwin, Melissa B Gonzalez, Cruz Velasco Lowe, Gary R Willis, J Randy |
| description | Transcutaneous monitors are utilized to monitor a patient's respiratory status. Some patients have similar values when comparing transcutaneous carbon dioxide (P
) values with blood gas analysis, whereas others show extreme variability. A retrospective review of data was performed to determine how accurately P
correlated with CO
values obtained by arterial blood gas (ABG) or capillary blood gas.
To determine whether P
values correlated with ABG or capillary blood gas values, subjects' records were retrospectively reviewed. Data collected included the P
value at the time of blood gas procurement and the ABG or capillary blood gas P
value. Agreement of pairs of methods (ABG vs P
and capillary blood gas vs P
) was assessed with the Bland-Altman approach with limits of agreement estimated with a mixed model to account for serial measurements per subject.
A total of 912 pairs of ABG/P
values on 54 subjects and 307 pairs of capillary blood gas/P
values on 34 subjects were analyzed. The P
range for ABG was 24-106 mm Hg, and P
values were 27-133 mm Hg. The P
range for capillary blood gas was 29-108 mm Hg, and P
values were 30-103 mm Hg. For ABG/P
comparisons, the Pearson correlation coefficient was 0.82, 95% CI was 0.80-0.84, and
was |
| doi_str_mv | 10.4187/respcare.05936 |
| format | Article |
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) values with blood gas analysis, whereas others show extreme variability. A retrospective review of data was performed to determine how accurately P
correlated with CO
values obtained by arterial blood gas (ABG) or capillary blood gas.
To determine whether P
values correlated with ABG or capillary blood gas values, subjects' records were retrospectively reviewed. Data collected included the P
value at the time of blood gas procurement and the ABG or capillary blood gas P
value. Agreement of pairs of methods (ABG vs P
and capillary blood gas vs P
) was assessed with the Bland-Altman approach with limits of agreement estimated with a mixed model to account for serial measurements per subject.
A total of 912 pairs of ABG/P
values on 54 subjects and 307 pairs of capillary blood gas/P
values on 34 subjects were analyzed. The P
range for ABG was 24-106 mm Hg, and P
values were 27-133 mm Hg. The P
range for capillary blood gas was 29-108 mm Hg, and P
values were 30-103 mm Hg. For ABG/P
comparisons, the Pearson correlation coefficient was 0.82, 95% CI was 0.80-0.84, and
was <.001. For capillary blood gas/P
comparisons, the Pearson correlation coefficient was 0.77, 95% CI was 0.72-0.81, and
was <.001. For ABG/P
, the estimated difference ± SD was -6.79 ± 7.62 mm Hg, and limits of agreement were -22.03 to 8.45. For capillary blood gas/P
, the estimated difference ± SD was -1.61 ± 7.64 mm Hg, and limits of agreement were -16.88 to 13.66. The repeatability coefficient was about 30 mm Hg.
Based on these data, capillary blood gas comparisons showed less variation and a slightly lower correlation with P
than did ABG comparisons. After accounting for serial measurements per patient, due to the wide limits of agreement and poor repeatability, the utility of relying on P
readings for this purpose is questionable.</description><identifier>ISSN: 0020-1324</identifier><identifier>EISSN: 1943-3654</identifier><identifier>DOI: 10.4187/respcare.05936</identifier><identifier>PMID: 29739856</identifier><language>eng</language><publisher>United States</publisher><ispartof>Respiratory care, 2018-07, Vol.63 (7), p.907-912</ispartof><rights>Copyright © 2018 by Daedalus Enterprises.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c1076-8229cf1fd66fb6bc29c777f3741cb2d974d2910948d63cac7d6550249064f27d3</citedby></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,776,780,27901,27902</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/29739856$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Lambert, Laura L</creatorcontrib><creatorcontrib>Baldwin, Melissa B</creatorcontrib><creatorcontrib>Gonzalez, Cruz Velasco</creatorcontrib><creatorcontrib>Lowe, Gary R</creatorcontrib><creatorcontrib>Willis, J Randy</creatorcontrib><title>Accuracy of Transcutaneous CO 2 Values Compared With Arterial and Capillary Blood Gases</title><title>Respiratory care</title><addtitle>Respir Care</addtitle><description>Transcutaneous monitors are utilized to monitor a patient's respiratory status. Some patients have similar values when comparing transcutaneous carbon dioxide (P
) values with blood gas analysis, whereas others show extreme variability. A retrospective review of data was performed to determine how accurately P
correlated with CO
values obtained by arterial blood gas (ABG) or capillary blood gas.
To determine whether P
values correlated with ABG or capillary blood gas values, subjects' records were retrospectively reviewed. Data collected included the P
value at the time of blood gas procurement and the ABG or capillary blood gas P
value. Agreement of pairs of methods (ABG vs P
and capillary blood gas vs P
) was assessed with the Bland-Altman approach with limits of agreement estimated with a mixed model to account for serial measurements per subject.
A total of 912 pairs of ABG/P
values on 54 subjects and 307 pairs of capillary blood gas/P
values on 34 subjects were analyzed. The P
range for ABG was 24-106 mm Hg, and P
values were 27-133 mm Hg. The P
range for capillary blood gas was 29-108 mm Hg, and P
values were 30-103 mm Hg. For ABG/P
comparisons, the Pearson correlation coefficient was 0.82, 95% CI was 0.80-0.84, and
was <.001. For capillary blood gas/P
comparisons, the Pearson correlation coefficient was 0.77, 95% CI was 0.72-0.81, and
was <.001. For ABG/P
, the estimated difference ± SD was -6.79 ± 7.62 mm Hg, and limits of agreement were -22.03 to 8.45. For capillary blood gas/P
, the estimated difference ± SD was -1.61 ± 7.64 mm Hg, and limits of agreement were -16.88 to 13.66. The repeatability coefficient was about 30 mm Hg.
Based on these data, capillary blood gas comparisons showed less variation and a slightly lower correlation with P
than did ABG comparisons. After accounting for serial measurements per patient, due to the wide limits of agreement and poor repeatability, the utility of relying on P
readings for this purpose is questionable.</description><issn>0020-1324</issn><issn>1943-3654</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2018</creationdate><recordtype>article</recordtype><recordid>eNo9kEtPwzAQhC0EoqFw5Yj8BxL8ih0fQwQFqVIvhR4jxw8RlJfs5NB_j6GU0-5IO7OjD4B7jDKGC_HobZi08jZDuaT8AiRYMppSnrNLkCBEUIopYStwE8JXlJzl8hqsiBRUFjlPwKHUevFKH-Ho4N6rIehlVoMdlwCrHSTwQ3WLjfvYT_GNgYd2_oSln61vVQfVYGClprbrlD_Cp24cDdyoYMMtuHKqC_bub67B-8vzvnpNt7vNW1VuU42R4GlBiNQOO8O5a3ijoxJCOCoY1g0xUjBDJEaSFYZTrbQwPM8RYRJx5ogwdA2yU672YwjeunrybR_L1BjVP4TqM6H6l1A0PJwM09L01vyfn5HQb4l3Yro</recordid><startdate>201807</startdate><enddate>201807</enddate><creator>Lambert, Laura L</creator><creator>Baldwin, Melissa B</creator><creator>Gonzalez, Cruz Velasco</creator><creator>Lowe, Gary R</creator><creator>Willis, J Randy</creator><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope></search><sort><creationdate>201807</creationdate><title>Accuracy of Transcutaneous CO 2 Values Compared With Arterial and Capillary Blood Gases</title><author>Lambert, Laura L ; Baldwin, Melissa B ; Gonzalez, Cruz Velasco ; Lowe, Gary R ; Willis, J Randy</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c1076-8229cf1fd66fb6bc29c777f3741cb2d974d2910948d63cac7d6550249064f27d3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2018</creationdate><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Lambert, Laura L</creatorcontrib><creatorcontrib>Baldwin, Melissa B</creatorcontrib><creatorcontrib>Gonzalez, Cruz Velasco</creatorcontrib><creatorcontrib>Lowe, Gary R</creatorcontrib><creatorcontrib>Willis, J Randy</creatorcontrib><collection>PubMed</collection><collection>CrossRef</collection><jtitle>Respiratory care</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Lambert, Laura L</au><au>Baldwin, Melissa B</au><au>Gonzalez, Cruz Velasco</au><au>Lowe, Gary R</au><au>Willis, J Randy</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Accuracy of Transcutaneous CO 2 Values Compared With Arterial and Capillary Blood Gases</atitle><jtitle>Respiratory care</jtitle><addtitle>Respir Care</addtitle><date>2018-07</date><risdate>2018</risdate><volume>63</volume><issue>7</issue><spage>907</spage><epage>912</epage><pages>907-912</pages><issn>0020-1324</issn><eissn>1943-3654</eissn><abstract>Transcutaneous monitors are utilized to monitor a patient's respiratory status. Some patients have similar values when comparing transcutaneous carbon dioxide (P
) values with blood gas analysis, whereas others show extreme variability. A retrospective review of data was performed to determine how accurately P
correlated with CO
values obtained by arterial blood gas (ABG) or capillary blood gas.
To determine whether P
values correlated with ABG or capillary blood gas values, subjects' records were retrospectively reviewed. Data collected included the P
value at the time of blood gas procurement and the ABG or capillary blood gas P
value. Agreement of pairs of methods (ABG vs P
and capillary blood gas vs P
) was assessed with the Bland-Altman approach with limits of agreement estimated with a mixed model to account for serial measurements per subject.
A total of 912 pairs of ABG/P
values on 54 subjects and 307 pairs of capillary blood gas/P
values on 34 subjects were analyzed. The P
range for ABG was 24-106 mm Hg, and P
values were 27-133 mm Hg. The P
range for capillary blood gas was 29-108 mm Hg, and P
values were 30-103 mm Hg. For ABG/P
comparisons, the Pearson correlation coefficient was 0.82, 95% CI was 0.80-0.84, and
was <.001. For capillary blood gas/P
comparisons, the Pearson correlation coefficient was 0.77, 95% CI was 0.72-0.81, and
was <.001. For ABG/P
, the estimated difference ± SD was -6.79 ± 7.62 mm Hg, and limits of agreement were -22.03 to 8.45. For capillary blood gas/P
, the estimated difference ± SD was -1.61 ± 7.64 mm Hg, and limits of agreement were -16.88 to 13.66. The repeatability coefficient was about 30 mm Hg.
Based on these data, capillary blood gas comparisons showed less variation and a slightly lower correlation with P
than did ABG comparisons. After accounting for serial measurements per patient, due to the wide limits of agreement and poor repeatability, the utility of relying on P
readings for this purpose is questionable.</abstract><cop>United States</cop><pmid>29739856</pmid><doi>10.4187/respcare.05936</doi><tpages>6</tpages></addata></record> |
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| language | eng |
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| source | PMC (PubMed Central); EZB-FREE-00999 freely available EZB journals |
| title | Accuracy of Transcutaneous CO 2 Values Compared With Arterial and Capillary Blood Gases |
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