Peer-reviewed veterinary case report
Accuracy of glucose monitors in sick juvenile dogs
By Vigh, Zsofia et al.·Published in Journal of the American Veterinary Medical Association·2023·College of Veterinary Medicine·View original on PubMed →
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Original publication title: Interstitial glucose monitoring has acceptable clinical accuracy in juvenile dogs.
- Species:
- dog
Plain-English summary
A group of sick juvenile dogs under one year old were monitored for blood sugar levels using two different devices: an interstitial glucose monitor (IGM) and a portable blood glucose monitor (PBGM). The study found that both devices provided similar readings, with the IGM showing clinically acceptable accuracy for tracking glucose levels. This means that veterinarians can use the IGM to help manage blood sugar in young dogs, especially in a hospital setting. However, more research is needed to fully understand how well the IGM works, particularly when blood sugar levels are very low.
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Abstract
OBJECTIVE: To compare the performance of an interstitial glucose monitor (IGM) versus a portable blood glucose monitor (PBGM) in sick juvenile dogs in a veterinary ICU. ANIMALS: 16 client-owned dogs admitted to the university teaching hospital under 1 year of age with systemic illness. PROCEDURES: Paired interstitial and blood glucose samples were collected. A third glucose measurement with a reference method was obtained when IGM and PBGM values were clinically disparate. Analytical accuracy was measured by Pearson correlation and agreement statistics, including mean absolute relative difference (MARD), bias, and 95% limits of agreement. The Parkes consensus error grid analysis was performed to assess clinical accuracy. RESULTS: 159 paired glucose measurements were available for analysis. Comparison of IGM readings to PBGM measurements resulted in an MARD of 15.4% and bias of -2.6%, with the 95% limits of agreement ranging from -42.5% to 37.4%. Positive correlation between IGM and PBGM (Pearson r = 0.65) was found. On consensus error grid analysis, 100% of the pairs fell into clinically acceptable zones (74.2% in zone A, and 25.8% in zone B). When disparate IGM and PBGM readings were compared to a laboratory reference standard (n = 13), both methods resulted in high MARD and wide limits of agreement. CLINICAL RELEVANCE: The IGM provides clinically acceptable glucose measurements compared to PBGM to monitor glucose levels in juvenile dogs in a clinical setting. Further clinical studies with a larger sample size, particularly in the hypoglycemic range, are needed to assess IGM performance in the lower glucose range.
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Search related cases →Original publication on PubMed: https://pubmed.ncbi.nlm.nih.gov/37406997/