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Accuracy and reliability of continuous blood glucose monitor in post‐surgical patients
Author(s) -
YAMASHITA K.,
OKABAYASHI T.,
YOKOYAMA T.,
YATABE T.,
MAEDA H.,
MANABE M.,
HANAZAKI K.
Publication year - 2009
Publication title -
acta anaesthesiologica scandinavica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.738
H-Index - 107
eISSN - 1399-6576
pISSN - 0001-5172
DOI - 10.1111/j.1399-6576.2008.01799.x
Subject(s) - medicine , hypoglycemia , intensive care unit , arterial blood , arterial catheter , continuous glucose monitoring , blood glucose monitoring , anesthesia , catheter , surgery , diabetes mellitus , endocrinology , glycemic , insulin
Background: The STG‐22 ™ is the only continuous blood glucose monitoring system currently available. The aim of this study is to determine the accuracy and reliability of the STG‐22 ™ for continuously monitoring blood glucose level in post‐surgical patients. Methods: Fifty patients scheduled for routine surgery were studied in surgical intensive care unit (ICU) of a university hospital. After admission to the ICU, the STG‐22 ™ was connected to the patients. An attending physician obtained blood samples from a radial arterial catheter. Blood glucose level was measured using the ABL ™ 800FLEX immediately after blood collection at 0, 4, 8, and 16 h post‐admission to the ICU (total of 200 blood glucose values). Results: The correlation coefficient ( R 2 ) was 0.96. In the Clarke error grid, 100% of the paired measurements were in the clinically acceptable zone A and B. The Bland and Altman analysis showed that bias±limits of agreement (percent error) were 0.04(0.7)±0.35(6.3) mmol (mg/dl) (7%), −0.11(−2)±1.22(22) (15%) and −0.33(−6)±1.28(23) (10%) in hypoglycemia (<70(3.89) mmol (mg/dl), normoglycemia (3.89(70)–10(180) mmol (mg/dl), and hyperglycemia (>10(180) mmol (mg/dl), respectively. Conclusions: The STG‐22 ™ can be used for measuring blood glucose level continuously and measurement results are consistent with intermittent measurement (percentage error within 15%). Therefore, the STG‐22 ™ is a useful device for monitoring in blood glucose level in the ICU for 16 h.