Novel Continuous Glucose Monitoring Metrics and Large-for-Gestational-Age Risk: An Exploratory Retrospective Cohort Study in Pregnancies with Type 1 Diabetes

Autor: Urszula Mantaj, Beata Mrzewka-Rogacz, Rafał Sibiak, Ewa Wender-Ozegowska, Paweł Gutaj
Rok vydání: 2022
Předmět:
Zdroj: Diabetes Technology & Therapeutics. 24:42-53
ISSN: 1557-8593
1520-9156
DOI: 10.1089/dia.2021.0194
Popis: Background Continuous glucose monitoring (CGM) improves pregnancy outcomes in patients with type 1 diabetes (T1D). We aimed to assess the between-group differences in HbA1c and the incidence of large-for-gestational-age (LGA) neonates in CGM and glucometers users and analyze the potential association of novel CGM metrics with LGA risk in T1D pregnancies. Material and methods The initial study cohort included 134 women with T1D treated with insulin pumps -75 CGM users and 59 patients who measured their glucose concentrations using glucometers. As part of our study, we matched the CGM users and patients who preferred the self-monitoring of blood glucose (SMBG) according to their baseline HbA1c and White's diabetes class at a 1:1 ratio. After the matching, both groups included 42 pregnancies. Results We did not find any differences in changes in HbA1c and perinatal outcomes between CGM and SMBG users; however, we achieved a limited statistical power, and there were more cases of diabetic nephropathy in the SMBG group. Mothers of LGA infants had higher 1st-trimester HbA1c, time above target, and mean glucose concentrations in each trimester of pregnancy. Other CGM metrics reflecting glucose fluctuations attributed to hyperglycemia were associated with an increased risk of LGA. Despite optimal maternal HbA1c, 39% of neonates demonstrated LGA. Conclusions Although most of the patients reached the target HbA1c concentrations, mothers of LGA newborns had higher 1st-trimester HbA1c, time above target, and mean glucose concentrations in each trimester of pregnancy. However, our preliminary data show that glycemic fluctuations metrics may serve as additional parameters predicting LGA in pregnancies with T1D.
Databáze: OpenAIRE