Accuracy of Freestyle Libre continuous glucose monitoring system in critically ill patients after cardiac surgery
Abstract Background Hyperglycemia is an independent risk factor for perioperative complications and mortality after cardiac surgery. Freestyle Libre Continuous glucose monitor (CGM) is an interstitial glucose monitoring system, which has been proven to be stable and accurate in various disease. Mate...
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| Format: | Article |
| Language: | English |
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BMC
2025-01-01
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| Series: | Journal of Cardiothoracic Surgery |
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| Online Access: | https://doi.org/10.1186/s13019-024-03229-1 |
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| author | Junjun Gu Zhimin Zhao Haiyan Li Bailing Li Si Chen Yingdan Cao Ning Li Xiaoying Lu |
| author_facet | Junjun Gu Zhimin Zhao Haiyan Li Bailing Li Si Chen Yingdan Cao Ning Li Xiaoying Lu |
| author_sort | Junjun Gu |
| collection | DOAJ |
| description | Abstract Background Hyperglycemia is an independent risk factor for perioperative complications and mortality after cardiac surgery. Freestyle Libre Continuous glucose monitor (CGM) is an interstitial glucose monitoring system, which has been proven to be stable and accurate in various disease. Materials and methods 86 patients with hyperglycemia after cardiac surgery between October 2021 and October 2022 in the cardiovascular ICU, were enrolled in this study. We evaluated systematic errors and numerical accuracy in blood glucose (BG) between two groups using Bland-Altman analysis and mean absolute relative difference (MARD). The clinical accuracy was assessed by consensus and Clarke error grid. Results 435 paired sensor–reference values were enrolled between the Freestyle and venous BG. The MARD was 18.2% with the Bland-Altman standard bias of 31.87 mg/dL. 1851 paired values were enrolled between the Freestyle and arterial BG. The MARD was 21.5%, and the Bland-Altman standard bias was 41.45 mg/dL. 432 paired values were enrolled between the arterial and venous BG. The MARD was 8.4%, and the Bland-Altman standard bias was − 9.95 mg/dL. Conclusions Our study demonstrated the relatively low accuracy of Freestyle Libre CGM for critical patients after cardiac surgery. The arterial blood gas glucose analysis acts as an effective tool to improve BG management. |
| format | Article |
| id | doaj-art-eb2bab0807d54ea48644abaa88467364 |
| institution | Kabale University |
| issn | 1749-8090 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | BMC |
| record_format | Article |
| series | Journal of Cardiothoracic Surgery |
| spelling | doaj-art-eb2bab0807d54ea48644abaa884673642025-01-26T12:51:51ZengBMCJournal of Cardiothoracic Surgery1749-80902025-01-012011610.1186/s13019-024-03229-1Accuracy of Freestyle Libre continuous glucose monitoring system in critically ill patients after cardiac surgeryJunjun Gu0Zhimin Zhao1Haiyan Li2Bailing Li3Si Chen4Yingdan Cao5Ning Li6Xiaoying Lu7Department of Cardiovascular Surgery, The first Affiliated Hospital of Naval Medical UniversityDepartment of Cardiovascular Surgery, The first Affiliated Hospital of Naval Medical UniversityDepartment of Vascular Surgery, The first Affiliated Hospital of Naval Medical UniversityDepartment of Cardiovascular Surgery, The first Affiliated Hospital of Naval Medical UniversityDepartment of Cardiovascular Surgery, The first Affiliated Hospital of Naval Medical UniversityDepartment of Cardiovascular Surgery, The first Affiliated Hospital of Naval Medical UniversityDepartment of Cardiovascular Surgery, The first Affiliated Hospital of Naval Medical UniversityDepartment of Cardiovascular Surgery, The first Affiliated Hospital of Naval Medical UniversityAbstract Background Hyperglycemia is an independent risk factor for perioperative complications and mortality after cardiac surgery. Freestyle Libre Continuous glucose monitor (CGM) is an interstitial glucose monitoring system, which has been proven to be stable and accurate in various disease. Materials and methods 86 patients with hyperglycemia after cardiac surgery between October 2021 and October 2022 in the cardiovascular ICU, were enrolled in this study. We evaluated systematic errors and numerical accuracy in blood glucose (BG) between two groups using Bland-Altman analysis and mean absolute relative difference (MARD). The clinical accuracy was assessed by consensus and Clarke error grid. Results 435 paired sensor–reference values were enrolled between the Freestyle and venous BG. The MARD was 18.2% with the Bland-Altman standard bias of 31.87 mg/dL. 1851 paired values were enrolled between the Freestyle and arterial BG. The MARD was 21.5%, and the Bland-Altman standard bias was 41.45 mg/dL. 432 paired values were enrolled between the arterial and venous BG. The MARD was 8.4%, and the Bland-Altman standard bias was − 9.95 mg/dL. Conclusions Our study demonstrated the relatively low accuracy of Freestyle Libre CGM for critical patients after cardiac surgery. The arterial blood gas glucose analysis acts as an effective tool to improve BG management.https://doi.org/10.1186/s13019-024-03229-1Arterial blood gasAccuracyContinuous glucose monitoringCardiovascular intensive care unitHyperglycemia |
| spellingShingle | Junjun Gu Zhimin Zhao Haiyan Li Bailing Li Si Chen Yingdan Cao Ning Li Xiaoying Lu Accuracy of Freestyle Libre continuous glucose monitoring system in critically ill patients after cardiac surgery Journal of Cardiothoracic Surgery Arterial blood gas Accuracy Continuous glucose monitoring Cardiovascular intensive care unit Hyperglycemia |
| title | Accuracy of Freestyle Libre continuous glucose monitoring system in critically ill patients after cardiac surgery |
| title_full | Accuracy of Freestyle Libre continuous glucose monitoring system in critically ill patients after cardiac surgery |
| title_fullStr | Accuracy of Freestyle Libre continuous glucose monitoring system in critically ill patients after cardiac surgery |
| title_full_unstemmed | Accuracy of Freestyle Libre continuous glucose monitoring system in critically ill patients after cardiac surgery |
| title_short | Accuracy of Freestyle Libre continuous glucose monitoring system in critically ill patients after cardiac surgery |
| title_sort | accuracy of freestyle libre continuous glucose monitoring system in critically ill patients after cardiac surgery |
| topic | Arterial blood gas Accuracy Continuous glucose monitoring Cardiovascular intensive care unit Hyperglycemia |
| url | https://doi.org/10.1186/s13019-024-03229-1 |
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