Hemoglobin A1c and Fructosamine Evaluated in Patients with Type 2 Diabetes Receiving Peritoneal Dialysis Using Long-Term Continuous Glucose Monitoring

Nephron ◽  
2021 ◽  
pp. 1-7
Author(s):  
Tobias Bomholt ◽  
Bo Feldt-Rasmussen ◽  
Rizwan Butt ◽  
Rikke Borg ◽  
Mir Hassan Sarwary ◽  
...  
Keyword(s):  
Type 2 Diabetes ◽  
Peritoneal Dialysis ◽  
Continuous Glucose Monitoring ◽  
Plasma Glucose ◽  
Glucose Monitoring ◽  
Control Group ◽  
Glucose Levels ◽  
Sensor Glucose ◽  
Interstitial Glucose

<b><i>Introduction:</i></b> Shortened erythrocyte life span and erythropoietin-stimulating agents may affect hemoglobin A<sub>1c</sub> (HbA<sub>1c</sub>) levels in patients receiving peritoneal dialysis (PD). We compared HbA<sub>1c</sub> with interstitial glucose measured by continuous glucose monitoring (CGM) in patients with type 2 diabetes receiving PD. <b><i>Methods:</i></b> Fourteen days of CGM (Ipro2, Medtronic) were performed in 23 patients with type 2 diabetes receiving PD and in 23 controls with type 2 diabetes and an estimated glomerular filtration rate over 60 mL/min/1.73 m<sup>2</sup>. Patients were matched on gender and age (±5 years). HbA<sub>1c</sub> (mmol/mol), its derived estimate of mean plasma glucose (eMPG<sub>A1c</sub>) (mmol/L), and fructosamine (µmol/L) were measured at the end of the CGM period and compared with the mean sensor glucose (mmol/L) from CGM. <b><i>Results:</i></b> In the PD group, mean sensor glucose was 0.98 (95% con­fidence interval (CI): 0.43–1.54) mmol/L higher than the eMPG<sub>A1c</sub> compared with the control group (<i>p</i> = 0.002) where glucose levels were nearly identical (−0.05 (95% CI: −0.35–0.25) mmol/L). A significant association was found between fructosamine and mean sensor glucose using linear regression with no difference between slopes (<i>p</i> = 0.89) or y-intercepts (<i>p</i> = 0.28). <b><i>Discussion/Conclusion:</i></b> HbA<sub>1c</sub> underestimates mean plasma glucose levels in patients with type 2 diabetes receiving PD. However, the clinical significance of this finding is undetermined. Fructosamine seems to more accurately reflect glycemic status. CGM or fructosamine could complement HbA<sub>1c</sub> to increase the accuracy of glycemic monitoring in the PD population.

The Accuracy of Hemoglobin A1c and Fructosamine Evaluated by Long-Term Continuous Glucose Monitoring in Patients with Type 2 Diabetes Undergoing Hemodialysis

2021 ◽  
pp. 1-9
Author(s):  
Tobias Bomholt ◽  
Marianne Rix ◽  
Thomas Almdal ◽  
Filip K. Knop ◽  
Susanne Rosthøj ◽  
...  
Keyword(s):  
Type 2 Diabetes ◽  
Glycemic Control ◽  
Continuous Glucose Monitoring ◽  
Plasma Glucose ◽  
Hemoglobin A1c ◽  
Glucose Monitoring ◽  
Control Group ◽  
Glucose Levels ◽  
Sensor Glucose

<b><i>Introduction:</i></b> The accuracy of hemoglobin A1c (HbA1c) as a glycemic marker in patients with type 2 diabetes (T2D) receiving hemodialysis (HD) remains unknown. To assess accuracy, we compared HbA1c and fructosamine levels with interstitial glucose measured by continuous glucose monitoring (CGM) in patients with T2D receiving HD. <b><i>Methods:</i></b> Thirty patients in the HD group and 36 patients in the control group (T2D and an estimated glomerular filtration rate &#x3e;60 mL/min/1.73 m<sup>2</sup>) completed the study period of 17 weeks. CGM (Ipro2<sup>®</sup>, Medtronic) was performed 5 times for periods of up to 7 days (with 4-week intervals) during a 16-week period. HbA1c (mmol/mol), the estimated mean plasma glucose from HbA1c (eMPGA1c [mmol/L]) and fructosamine (μmol/L) was measured at week 17 and compared with mean sensor glucose levels from CGM. <b><i>Findings:</i></b> In the HD group, mean sensor glucose was 1.4 mmol/L (95% confidence interval [CI]: 1.0–1.8) higher than the eMPGA1c, whereas the difference for controls was 0.1 mmol/L (95% CI: −0.1–[0.4]; <i>p</i> &#x3c; 0.001). Adjusted for mean sensor glucose, HbA1c was lower in the HD group (−7.3 mmol/mol, 95% CI: −10.0–[−4.7]) than in the control group (<i>p</i> &#x3c; 0.001), with no difference detected for fructosamine (<i>p</i> = 0.64). <b><i>Discussion:</i></b> HbA1c evaluated by CGM underestimates plasma glucose levels in patients receiving HD. The underestimation represents a clinical challenge in optimizing glycemic control in the HD population. Fructosamine is unaffected by the factors affecting HbA1c and appears to be more accurate for glycemic monitoring. CGM or fructosamine could thus complement HbA1c in obtaining more accurate glycemic control in this patient group.

MO633GLYCAEMIC MARKERS IN PATIENTS WITH TYPE 2 DIABETES UNDERGOING HAEMODIALYSIS EVALUATED BY LONG-TERM CONTINUOUS GLUCOSE MONITORING*

2021 ◽  
Vol 36 (Supplement_1) ◽  
Author(s):  
Tobias Bomholt ◽  
Marianne Rix ◽  
Thomas Peter Almdal ◽  
Filip K Knop ◽  
Susanne Rosthøj ◽  
...  
Keyword(s):  
Type 2 Diabetes ◽  
Blood Glucose ◽  
Glucose Monitoring ◽  
Control Group ◽  
Glucose Levels ◽  
Blood Glucose Levels ◽  
Sensor Glucose ◽  
The Mean ◽  
Mean Blood Glucose

Abstract Background and Aims The reliability of haemoglobin A1c (HbA1c) as a glycaemic marker in patients receiving haemodialysis (HD) remains unknown. To assess accuracy, we compared HbA1c and fructosamine levels with interstitial glucose levels measured by continuous glucose monitoring (CGM) in patients with type 2 diabetes receiving HD. Method The HD group (maintenance HD and type 2 diabetes) comprised 30 patients who completed the study period of 17 weeks; the control group (type 2 diabetes and an estimated glomerular filtration rate &gt;60 mL/min/1.73 m2) comprised 36 individuals. CGM (Ipro2®, Medtronic) for periods up to seven days was performed five times (with four weeks intervals) during a 16-week period. HbA1c and fructosamine were measured at week 17. The mean sensor glucose from CGM was compared with the measured HbA1c, its estimated mean blood glucose (eMBGA1c) and fructosamine levels. Results In the HD group, the mean sensor glucose from CGM was 1.4 (95% confidence interval [CI]: 1.0–1.8) mmol/L higher than the eMBGA1c, whereas the difference was 0.1 mmol/L (95% CI: -0.1–[0.4]; P&lt;0.001) in the control group. Adjusted for the mean sensor glucose, HbA1c was -7.3 (95% CI: -10.0–[-4.7]) mmol/mol lower in the HD group than in controls (P&lt;0.001), whereas no difference was detected for fructosamine (P=0.64). Conclusion HbA1c evaluated by CGM underestimates mean blood glucose levels in patients receiving maintenance HD; fructosamine appears to be more accurate. CGM-assessed blood glucose could complement or replace HbA1c in patients where HbA1c underestimates blood glucose levels.

scholarly journals The effects of professional continuous glucose monitoring as an adjuvant educational tool for improving glycemic control in patients with type 2 diabetes

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Dulce Adelaida Rivera-Ávila ◽  
Alejandro Iván Esquivel-Lu ◽  
Carlos Rafael Salazar-Lozano ◽  
Kyla Jones ◽  
Svetlana V. Doubova
Keyword(s):  
Type 2 Diabetes ◽  
Glycemic Control ◽  
Continuous Glucose Monitoring ◽  
Glucose Monitoring ◽  
Outcome Variable ◽  
Control Group ◽  
Educational Tool ◽  
Study Objective ◽  
Hba1c Levels

Abstract Background The study objective was to evaluate the effects of professional continuous glucose monitoring (CGM) as an adjuvant educational tool for improving glycemic control in patients with type 2 diabetes (T2D). Methods We conducted a three-month quasi-experimental study with an intervention (IGr) and control group (CGr) and ex-ante and ex-post evaluations in one family medicine clinic in Mexico City. Participants were T2D patients with HbA1c > 8% attending a comprehensive diabetes care program. In addition to the program, the IGr wore a professional CGM sensor (iPro™2) during the first 7 days of the study. Following this period, IGr participants had a medical consultation for the CGM results and treatment adjustments. Additionally, they received an educational session and personalized diet plan from a dietitian. After 3 months, the IGr again wore the CGM sensor for 1 week. The primary outcome variable was HbA1c level measured at baseline and 3 months after the CGM intervention. We analyzed the effect of the intervention on HbA1c levels by estimating the differences-in-differences treatment effect (Diff-in-Diff). Additionally, baseline and three-month CGM and dietary information were recorded for the IGr and analyzed using the Student’s paired t-test and mixed-effects generalized linear models to control for patients’ baseline characteristics. Results Overall, 302 T2D patients participated in the study (IGr, n = 150; control, n = 152). At the end of the three-month follow-up, we observed 0.439 mean HbA1C difference between groups (p = 0.004), with an additional decrease in HbA1c levels in the IGr compared with the CGr (Diff-in-Diff HbA1c mean of − 0.481% points, p = 0.023). Moreover, compared with the baseline, the three-month CGM patterns showed a significant increase in the percentage of time in glucose range (+ 7.25; p = 0.011); a reduction in the percentage of time above 180 mg/dl (− 6.01; p = 0.045), a decrease in glycemic variability (− 3.94, p = 0.034); and improvements in dietary patterns, shown by a reduction in total caloric intake (− 197.66 Kcal/day; p = 0.0001). Conclusion Professional CGM contributes to reducing HbA1c levels and is an adjuvant educational tool that can improve glycemic control in patients with T2D. Trial registration ClinicalTrials.gov: NCT04667728. Registered 16/12/2020

scholarly journals The Accuracy and Precision of the Continuously Stored Data from Flash Glucose Monitoring System in Type 2 Diabetes Patients during Standard Meal Tolerance Test

2020 ◽  
Vol 2020 ◽  
pp. 1-6 ◽  
Author(s):  
Rengna Yan ◽  
Huiqin Li ◽  
Xiaocen Kong ◽  
Xiaofang Zhai ◽  
Maoyuan Chen ◽  
...  
Keyword(s):  
Type 2 Diabetes ◽  
Glucose Monitoring ◽  
Flash Glucose Monitoring ◽  
Standard Meal ◽  
Grid Analysis ◽  
Sensor Glucose ◽  
Interstitial Glucose ◽  
Error Grid ◽  
Diabetes Patients

Background. The purpose of this study was to investigate the accuracy of the continuously stored data from the Abbott FreeStyle Libre flash glucose monitoring (FGM) system in Chinese diabetes patients during standard meal tests when glucose concentrations were rapidly changing. Subjects and Methods. Interstitial glucose levels were monitored for 14 days in 26 insulin-treated patients with type 2 diabetes using the FGM system. Standard meal tests were conducted to induce large glucose swings. Venous blood glucose (VBG) was tested at 0, 30, 60, and 120 min after standard meal tests in one middle day of the first and second weeks, respectively. The corresponding sensor glucose values were obtained from interpolating continuously stored data points. Assessment of accuracy was according to recent consensus recommendations with median absolute relative difference (MARD) and Clarke and Parkes error grid analysis (CEG and PEG). Results. Among 208 paired sensor-reference values, 100% were falling within zones A and B of the Clarke and Parkes error grid analysis. The overall MARD was 10.7% (SD, 7.8%). Weighted least squares regression analysis resulted in high agreement between the FGM sensor glucose and VBG readings. The overall MTT results showed that FGM was lower than actual VBG, with MAD of 22.1 mg/dL (1.2 mmol/L). At VBG rates of change of -1 to 0, 0 to 1, 1 to 2, and 2 to 3 mg/dl/min, MARD results were 11.4% (SD, 8.7%), 9.4% (SD, 6.5%), 9.9% (SD, 7.5%), and 9.5% (SD, 7.7%). At rapidly changing VBG concentrations (>3 mg/dl/min), MARD increased to 19.0%, which was significantly higher than slow changing BG groups. Conclusions. Continuously stored interstitial glucose measurements with the FGM system were found to be acceptable to evaluate VBG in terms of clinical decision during standard meal tests. The continuously stored data from the FGM system appeared to underestimate venous glucose and performed less well during rapid glucose changes.

Use of Continuous Glucose Monitoring in Patients with Diabetes Mellitus on Peritoneal Dialysis: Correlation with Glycated Hemoglobin and Detection of High Incidence of Unaware Hypoglycemia

2015 ◽  
Vol 41 (1-3) ◽  
pp. 18-24 ◽  
Author(s):  
Ahad Qayyum ◽  
Tahseen A. Chowdhury ◽  
Elizabeth Ley Oei ◽  
Stanley L. Fan
Keyword(s):  
Peritoneal Dialysis ◽  
Continuous Glucose Monitoring ◽  
Glycated Hemoglobin ◽  
Glucose Monitoring ◽  
Diabetic Control ◽  
Diabetic Patients ◽  
Glucose Levels ◽  
High Incidence ◽  
Patients With Diabetes ◽  
Interstitial Glucose

Introduction: Glycated hemoglobin is used to assess diabetic control although its accuracy in dialysis has been questioned. How does it compare to the Continuous Glucose Monitoring System (CGMS) in peritoneal dialysis (PD) patients? Methods: We conducted a retrospective analysis of 60 insulin-treated diabetic patients on PD. We determined the mean interstitial glucose concentration and the proportion of patients with hypoglycemia (<4 mmol/l) or hyperglycemia (>11 mmol/l). Results: The correlation between HbA1c and glucose was 0.48, p < 0.0001. Three of 15 patients with HbA1c >75 mmol/mol experienced significant hypoglycemia (14-144 min per day). The patients with frequent episodes of hypoglycemia could not be differentiated from those with frequent hyperglycemia by demographics or PD prescription. Conclusion: HbA1c and average glucose levels measured by the CGMS are only weakly correlated. On its own, HbA1c as an indicator of glycemic control in patients with diabetes on PD appears inadequate. We suggest that the CGMS technology should be more widely adopted.

Advantages and Disadvantages of Realtime Continuous Glucose Monitoring in People with Type 2 Diabetes

2012 ◽  
Vol 08 (01) ◽  
pp. 22 ◽  
Author(s):  
M Susan Walker ◽  
Stephanie J Fonda ◽  
Sara Salkind ◽  
Robert A Vigersky ◽  
◽  
...  
Keyword(s):  
Type 2 Diabetes ◽  
Type 1 Diabetes ◽  
Blood Glucose ◽  
Continuous Glucose Monitoring ◽  
Glucose Monitoring ◽  
Glucose Levels ◽  
Advantages And Disadvantages ◽  
Blood Glucose Levels

Previous research has shown that realtime continuous glucose monitoring (RT-CGM) is a useful clinical and lifestyle aid for people with type 1 diabetes. However, its usefulness and efficacy for people with type 2 diabetes is less known and potentially controversial, given the continuing controversy over the efficacy of self-monitoring of blood glucose (SMBG) in this cohort. This article reviews theextantliterature on RT-CGM for people with type 2 diabetes, and enumerates several of the advantages and disadvantages of this technology from the perspective of providers and patients. Even patients with type 2 diabetes who are not using insulin and/or are relatively well controlled on oral medications have been shown to spend a significant amount of time each day in hyperglycemia. Additional tools beyond SMBG are necessary to enable providers and patients to clearly grasp and manage the frequency and amplitude of glucose excursions in people with type 2 diabetes who are not on insulin. While SMBG is useful for measuring blood glucose levels, patients do not regularly check and SMBG does not enable many to adequately manage blood glucose levels or capture marked and sustained hyperglycemic excursions. RT-CGM systems, valuable diabetes management tools for people with type 1 diabetes or insulin-treated type 2 diabetes, have recently been used in type 2 diabetes patients. Theextantstudies, although few, have demonstrated that the use of RT-CGM has empowered people with type 2 diabetes to improve their glycemic control by making and sustaining healthy lifestyle choices.

The Use of Continuous Glucose Monitoring in Older People With Type 2 Diabetes

2021 ◽  
Vol 36 (11) ◽  
pp. 556-567
Author(s):  
Hindu Rao ◽  
Neeloufar Fakourfar ◽  
Caroline Sun ◽  
Jelena Lewis
Keyword(s):  
Type 2 Diabetes ◽  
Older People ◽  
Continuous Glucose Monitoring ◽  
Data Extraction ◽  
Glucose Monitoring ◽  
Glucose Levels ◽  
Study Selection ◽  
Pubmed Search ◽  
Meta Analyses

Objective To review current guidelines and literature regarding continuous glucose monitoring (CGM) use in the management of type 2 diabetes mellitus (T2DM) in older people. Data Sources A PubMed search of articles published through August 2020 using a combination of the following: older people, T2DM, continuous glucose monitoring, hypoglycemia, and hyperglycemia. Study Selection/Data Extraction Relevant randomized control trials, meta-analyses, and guidelines were assessed for the use of CGM in older patients with T2DM. Articles were included based on relevance to the topic, detailed methods, and complete results. Data Synthesis CGM use in T2DM management in older people is not well defined. CGM may be a valuable technology in older people who face unique challenges, such as hypoglycemia, decline in cognitive function, and variable glucose levels. This article provides a review of recommendations for glucose monitoring in T2DM and discusses the role of specific CGM products. Conclusion CGM is a viable option for older people with T2DM to help improve overall diabetes control. Pharmacists can play an important role in educating patients about this technology.

scholarly journals Continuous glucose monitoring - proved hypoglycemia in sodium-glucose co-transporter-2 inhibitors - treated type 2 diabetes patients: a link to ketosis development

2019 ◽  
Vol 1 (1) ◽  
pp. 52-69
Author(s):  
Shmuel Levit ◽  
Shmuel Giveon ◽  
Ildar N. Musin ◽  
Royi Barnea ◽  
Ifat Korek-Abadi ◽  
...  
Keyword(s):  
Type 2 Diabetes ◽  
Side Effects ◽  
Continuous Glucose Monitoring ◽  
Real Life ◽  
Glucose Monitoring ◽  
Cardiovascular Morbidity And Mortality ◽  
Sensor Glucose ◽  
Group A ◽  
Group B

Background: Latest studies have shown the remarkable ability of sodium-glucose co-transporter-2 inhibitors (SGLT2i) to reduce cardiovascular morbidity and mortality. However, real-life data and the results of several other studies seem to contradict these outcomes, pointing out possibilities of serious side effects. Ketoacidosis (KA) remains one of the most dangerous complications, yet, not fully understood. All of the above urgently requires real-practice data, which may shed some light on side effects of this novel anti-diabetic drug family. Aims: To investigate the real-life rates of hypoglycemia and ketosis (K) in SGLT2i treated patients, using Continuous Glucose Monitoring (CGM) and capillary blood -hydroxybutyrate measurements. Methods: We report the results of a two-year retrospective analysis of 136 Type 2 Diabetes (T2DM) patients, all (100%) treated with a SGLT2i, combined with Metformin or Metformin with Incretin-Based therapy (MT-IBT). CGM recordings were done in 52 persons. In 9 patients (Group A), CGM-proved hypoglycemic episodes were discovered. The rest of 43 patients (Group B) didnt show any hypoglycemia. Three patients in Group A and 11 from Group B were also treated with small doses of basal insulin on admission; the insulin was later discontinued in all patients of Group A and seven patients of Group B . Main characteristics of two groups were subsequently compared. Results: CGM data analysis showed significantly lower average Sensor Glucose (SG) , 7.21.3 vs. 8.21.7 mmol/l, p=0.04, and estimated HbA1c , 6.10.7 vs. 6.81.1%, p=0.02, in Group A patients. We also report three cases of ketosis, proved by elevated capillary -hydroxybutyrate concentrations. Pathophysiological link between frequent hypoglycemia rates (Six patients without insulin treatment (11.5 % in total CGM group of 52 patients)) and ketosis development (Three patients (2.2% in total cohort of 136 participants)) was suggested. Conclusions: More frequent than previously reported rates of hypoglycemia and ketoacidosis were discovered in patients taking SGLT2 inhibitors. Pathophysiological link between the two conditions is assumed. More studies are needed to confirm our hypothesis.

scholarly journals Effect of Lupin-Enriched Biscuits as Substitute Mid-Meal Snacks on Post-Prandial Interstitial Glucose Excursions in Post-Surgical Hospital Patients with Type 2 Diabetes

Nutrients ◽  
2020 ◽  
Vol 12 (5) ◽  
pp. 1239
Author(s):  
Sophie Skalkos ◽  
George Moschonis ◽  
Colleen J. Thomas ◽  
Joanna McMillan ◽  
Antigone Kouris-Blazos
Keyword(s):  
Diabetes Mellitus ◽  
Type 2 Diabetes ◽  
Glycaemic Control ◽  
Glucose Monitoring ◽  
Glucose Levels ◽  
Hospital Patients ◽  
Interstitial Glucose ◽  
Meal Effect ◽  
Hospital Menu

Hospital biscuit snacks offered to Type 2 Diabetes Mellitus (T2DM) patients may adversely affect glycaemic control. This study investigated the effect of lupin mid-meal biscuit snacks, compared to spelt or standard hospital biscuits, on interstitial glucose levels in post-operative T2DM inpatients. In a pilot cross-over pragmatic study, 20 patients (74 ± 12 years) consumed, in order, lupin biscuits (20% lupin), wholemeal spelt and standard plain sweet biscuits as mid-meal snacks (2 biscuits each for morning and afternoon tea) on three consecutive days. Continuous glucose monitoring, appetite perceptions and bowel motions were recorded. Glucose levels were not significantly different in the first 90 min after mid-meal biscuit consumption at morning and afternoon tea, irrespective of type. However, after consuming the lupin biscuits only, glucose levels were significantly (p < 0.001) reduced 90 min postprandially after dinner, indicating a potential second-meal effect. Patients also reported improved satiety after lupin biscuit consumption on day 1, compared to days 2 and 3 (p = 0.018). These findings suggest that lupin-enriched biscuits may improve both glycaemic control and satiety in hospitalised T2DM patients, potentially contributing to reduced length of stay. Larger controlled studies are warranted to confirm these findings and inform potential revision of hospital menu standards for T2DM patients.

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