Discontinuation Of Metformin Research Articles

Metformin Induced Lichenoïd Drug Eruption

Cutaneous lichenoid drug eruptions are rare adverse drug reactions reminiscent of lichen planus. The most frequently reported culprit drugs are Checkpoint inhibitors, tyrosine kinase inhibitors and TNF-α inhibitors, but other drugs can also be responsible. This case-report is about a 49-year-old woman with a history of type 2 diabetes. She started taking metformin 160 weeks before the onset of a pruritic lichenoid rash on the trunk and limbs, of which the histopathology was in favor of an adverse cutaneous lichenoid drug eruption caracterized by the presence of eosinophilic polynuclei in the perivascular infiltrate. The patient benefited from oral corticosteroids with discontinuation of metformin which resulted in the resumption of the lichenoid rash.

A review on vitamin B12 deficiency induced by metformin

Multiple studies have established a higher prevalence of vitamin B12 deficiency in patients who have type 2 diabetes mellitus (T2DM). Metformin is prescribed as the 1st line oral glucose-lowering medication for individuals with T2DM. However, metformin therapy has been linked to vitamin B12 malabsorption, which can result in both biochemical and clinical manifestations of vitamin B12 deficiency. The long-term use of metformin is associated with a significant decrease in vitamin B12 levels, particularly in doses greater than 2000 mg per day over a period of 4 years. Vitamin B12 is a water-soluble vitamin. It acts as a cofactor for enzymes involved in DNA synthesis and neuroprotection at the cellular level. Hence, vitamin B12 deficiency can lead to various clinical consequences, including hematologic abnormalities such as megaloblastic anemia and hypersegmented neutrophil formation, peripheral neuropathy, and progressive axonal demyelination, hyperhomocysteinemia (HHcy). The latest "standards of medical care in diabetes-2017" issued by the American diabetes association recommends periodic assessment of B12 status and, if necessary, the use of B12 replacement therapy in diabetic patients taking metformin. In order to address the vitamin B12 deficiency associated with metformin several therapies are available including prophylactic supplements of calcium and vitamin B12, discontinuation of metformin, and replenishment of vitamin B12 stores through intramuscular or oral therapy. It is important to regularly monitor vitamin B12 levels for at least annually to prevent complications of vitamin B12 deficiency and continue with supplementation if metformin is still being used.

Patterns of metformin use and glycated haemoglobin trends among patients with newly diagnosed type 2 diabetes in Alberta, Canada.

Canadian guidelines recommend metformin as first-line therapy for incident uncomplicated type 2 diabetes and the vast majority of patients are treated accordingly. However, only 54% 65% remain on treatment after 1 year, with the highest discontinuation rates within the first 3 months. The purpose of this study was: (a) to identify individual and clinical factors associated with metformin discontinuation among patients with newly diagnosed uncomplicated type 2 diabetes in Alberta, Canada, and (b) describe glycated haemoglobin (HbA1c) trajectories in the first 12 months after initiation of pharmacotherapy, stratified by metformin usage pattern. We conducted a retrospective cohort study using linked administrative datasets from 2012 to 2017 to define a cohort of individuals with uncomplicated incident type 2 diabetes. Using logistic regression, we determined individual and clinical characteristics associated with metformin discontinuation. We categorized individuals based on patterns of metformin use and then used mean HbA1c measurements over a 12-month follow-up period to determine glycaemic trajectories for each pattern. Characteristics associated with metformin discontinuation were younger age, lower baseline HbA1c and having fewer comorbidities. Sex, income and location (urban/rural) were not significantly associated with metformin discontinuation. Individuals who continued metformin with higher adherence and individuals who discontinued metformin entirely had lowest HbA1c values at 12 months from treatment initiation. Those who changed therapy or had additional therapies added had higher HbA1c values at 12 months. Identifying characteristics associated with discontinuation of metformin and individuals' medication usage patterns provide an opportunity for targeted interventions to support patients' glycaemic management.

126-OR: Metformin Discontinuation and Clinical Outcomes in Patients with Diabetes and Advanced Chronic Kidney Disease—A Prospective Cohort Study

Introduction: Metformin can now be used in patients with chronic kidney disease (CKD) up to estimated glomerular filtration rate [eGFR] ≥30 ml/min/1.73m2. However, surveys suggested its continuing use in some patients with eGFR<30 ml/min/1.73m2 in real world practice although the risk-benefit ratios remain uncertain. Methods: This was a prospective, population-based cohort of 36,940 patients with diabetes in Hong Kong stratified by continuation of metformin within 6 months after reaching eGFR<30 ml/min/1.73m2 in 2002-2018, followed up until 2019. We used Cox model with time-dependent exposure and covariates to estimate the hazard ratio (HR) of death, major-adverse cardiovascular events (MACE), and end-stage kidney disease (ESKD) in a propensity-score overlap-weighted cohort of continued versus discontinued-metformin users. Results: Of 36,940 metformin users with new-onset eGFR<30 ml/min/1.73m2, 8400 (22.7%) discontinued metformin within 6 months whereas 28,540 (77.3%) continued with metformin. The median metformin daily dose was 1000 [interquartile range, IQR: 1000, 1000] mg in continued-metformin users. During a median follow-up of 3.5 (IQR:1.8-5.8) years, 15.3%, 16.6%, and 28.1% had incident MACE, heart failure, and ESKD respectively, and 41.5% died. Compared to continued-metformin use, discontinuation was associated with higher risk of MACE (weighted and adjusted HR=1.42, 95% CI: 1.31-1.54), heart failure (HR=1.70, 1.58-1.83), ESKD (HR=1.73, 1.63-1.83), and death (HR=1.24, 1.19-1.29). Results were consistent in patients with and without established cardiovascular diseases (CVD). Conclusions: Discontinuation of metformin was associated with increased risk of cardiovascular-renal events, regardless CVD status. Continuation of metformin below eGFR 30ml/min/1.73m2 may be associated with cardio-renal and mortality benefits that needs to be weighed against the risks of lactic acidosis. Disclosure A.Yang: None. R.C.Ma: Advisory Panel; AstraZeneca, Merck & Co., Inc., Other Relationship; Bayer Inc., Boehringer-Ingelheim, Research Support; Tricida, Inc., Roche Diagnostics, Novo Nordisk. J.C.Chan: Board Member; Asia Diabetes Foundation, Consultant; Bayer Inc., Celltrion, Boehringer Ingelheim and Eli Lilly Alliance, Sanofi, Research Support; AstraZeneca, Servier Laboratories, Viatris Inc., Hua Medicine, Merck KGaA, Applied Therapeutics Inc., Lee Powder, Pfizer Inc., Speaker's Bureau; Novartis, Stock/Shareholder; GemVCare Ltd. E.Chow: Research Support; Medtronic, Merck KGaA, Speaker's Bureau; Novartis, Bayer Inc., Sanofi. M.Shi: None. H.Wu: None. E.S.H.Lau: None. J.T.K.Cheung: None. X.Zhang: None. B.Fan: None. A.P.Kong: Advisory Panel; Abbott, Kyowa Kirin Co., Ltd., Speaker's Bureau; Abbott, AstraZeneca, Lilly, Bayer Inc., Boehringer Ingelheim Inc. A.Luk: Research Support; Novo Nordisk, Boehringer-Ingelheim, Bayer Inc., Speaker's Bureau; Eli Lilly and Company. Funding Chinese University of Hong Kong

Peri-operative management of diabetes mellitus - A survey of current practices among Indian anesthesiologists.

Increased burden of diabetes in India has resulted in a spurt in the number of patients with diabetes posted for surgeries. The paucity of national guidelines can lead to marked practice variations in the peri-operative management of diabetes. This survey intends to discern current peri-operative practices among anesthesiologists working in medical colleges, tertiary care government, and private health care institutes of the country. An anonymous online survey comprising of 25 closed-ended questions was conducted using Google Forms® and disseminated through social media, emails, and messaging platforms. The questionnaire dealt primarily with the peri-operative management of diabetes in patients scheduled for elective surgery. The survey was conducted over a period of 1 month and targeted anesthesia resident trainees with more than 1-year experience, senior residents, and consultants working in India. Statistically significant difference was observed between the three types of health facilities with respect to prior evaluation for diabetes (P = 0.007), prioritizing operative list (P = 0.006), hospital encouragement of day care surgery (P < 0.001), glycated hemoglobin level (HbA1c) level >8.5 for postponement of surgery (P < 0.05), insulin infusion preference (P < 0.001), hourly intra-operatively capillary blood glucose (CBG) assessment (P = 0.021), and avoiding peri-operative use of Ringer's lactate (RL) (P = 0.025). This survey primarily highlights the lack of prioritizing the operative list, early discontinuation of metformin, and reduced tendency to consider diabetics for day care surgeries.

Metformin, placebo, and endocrine therapy discontinuation among participants in a randomized double-blind trial of metformin vs placebo in hormone receptor-positive early-stage breast cancer (CCTG MA32).

The MA32 study investigated whether 5 years of metformin (versus placebo) improves invasive disease-free survival in early-stage breast cancer (BC). Non-adherence to endocrine therapy (ET) and medications for chronic conditions is common and increases with drug toxicity and polypharmacy. This secondary analysis evaluates rates and predictors of early discontinuation of metformin, placebo, and ET among participants with HR-positive BC. Patients with high-risk non-metastatic BC were randomized to 60months of metformin (850mg BID) or placebo BID. Patients were administered bottles of metformin/placebo every 180days. Metformin/placebo adherence was defined as a bottle dispensed at month 48 or later. The ET adherence analysis included patients with HR-positive BC who received ET with start and stop date reported, with adherence defined as > 48months of use. Associations of covariates with study drug and ET adherence were examined using multivariable models. Among the 2521 HR-positive BC patients, 32.9% were non-adherent to study drug. Non-adherence was higher among patients on metformin vs placebo (37.1% vs 28.7%, p < 0.001). Reassuringly, ET discontinuation rates were similar between treatment arms (28.4% vs 28.0%, p = 0.86). Patients who were non-adherent to ET were more likely to discontinue study therapy (38.8% vs 30.1%, p < 0.0001). In a multivariable analysis, study drug non-adherence was increased with metformin vs placebo (OR: 1.50, 95% CI 1.25-1.80; p < 0.0001); non-adherence to ET (OR: 1.47, 95% CI 1.20-1.79, p < 0.0001); grade 1 or greater GI toxicity during the first 2years; lower age; and higher body mass index. While non-adherence was higher among patients on metformin, it was still considerable among patients on placebo. Reassuringly, treatment arm allocation did not impact ET adherence. Attention to global medication adherence is needed to improve BC and non-oncological outcomes in cancer survivors. ClinicalTrials.gov: NCT01.

Appraisal of guidelines for managing contrast medium in patients with metformin: consensuses, controversies, and gaps.

The current guidelines contain substantial inconsistency regarding the use of metformin concomitantly with contrast media. The objective of this study is to appraise the guidelines and summarize the agreements and differences among recommendations. Our search focused on English language guidelines published between 2018 and 2021. Guidelines for the management of contrast media in patients with continuous metformin were included. Guidelines were assessed using the Appraisal of Guidelines for Research and Evaluation II instrument. Six guidelines out of 1134 fulfilled the inclusion criteria with an AGREE II score of 79.2% (IQR 72.7 to 85.1%). There was good overall quality of the guidelines, with six considered "strongly recommended." CPGs scored poorly in "Clarity of Presentation" and "Applicability," with scores of 75.9% and 76.4%, respectively. The intraclass correlation coefficients were excellent in each domain. There are some guidelines (33.3%) that recommend discontinuation of metformin in patients with an eGFR of < 30mL/min/1.73 m2, while some guidelines (16.7%) suggest the threshold of renal function should be eGFR < 40mL/min/1.73 m2. Most guidelines recommend withdrawing metformin before using contrast agents in diabetic patients with severely impaired kidney function but disagree on the renal function thresholds. Furthermore, the gaps regarding discontinuing metformin with moderate renal impairment (30mL/min/1.73 m2 < eGFR < 60mL/min/1.73 m2) must be considered in future studies. • Guidelines involving metformin and contrast agents are reliable and optimal. • Most guidelines advocate discontinuing metformin before using contrast agents in diabetic patients with advanced renal failure, but there are controversial suggestions regarding kidney function thresholds. • The gaps regarding the time of discontinuation of the metformin with moderate renal impairment (30mL/min/1.73 m2 < eGFR < 60mL/min/1.73 m2) must be considered in the extensive RCT studies.

PSUN265 Metformin-Induced Severe Lactic Acidosis Requiring Urgent Dialysis Associated With Influenza A Infection in a Patient With Previous Preserved Renal Function: Case Report

Abstract Background Although rare, metformin-induced lactic acidosis it's a severe acute condition, that requires immediate recognition and management due to its high lethality. Clinical case Female, 70-years-old, presents to the E.R. with generalized malaise, weakness and myalgia for 4 days associated with diarrhea and vomits for 2 days. Denies fever or flu-like symptoms. History of hypertension and T2DM using metoprolol 100mg/day, perindopril 10mg/day, indapamide 2.5mg/day, amlodipine 5mg/day, linagliptin 5mg/day, rosuvastatin 10mg/day, gliclazide 120mg/day, aspirin 100mg/day, clonidine 0.3mg/day and metformin XR 1g/day. On clinical exam she was dehydrated and tachypneic with no other important findings. Laboratory showed glucose 31mg/dL, severe metabolic acidosis - pH 6,0; HCO3 5,4mmol/L; lactate 11.6mmol/L (n&amp;lt;1.6mmoL/L), acute renal failure KDIGO 3, creatinine 8.08mg/dL eGFR 5mL/min/1.73m2 (patient's baseline 0.9mg/dL), BUN 213mg/dL (n&amp;lt;50mg/dL), potassium 6.8mEq/L (3.5&amp;gt;n&amp;lt;5.1mEq/L), phosphor 14.9mg/dL (2.7&amp;gt;n&amp;lt;4.5mg/dL), chlorine 92mEq/L (98&amp;gt;n&amp;lt;107mEq/L), magnesium 1.7mg/dL (1.6&amp;gt;n&amp;lt;2.6mg/dL), calcium 0.95mmol/L (1.16&amp;gt;n&amp;lt;1.32mmol/L), and normal blood count. She was admitted to the ICU, hemodynamically stable with no need for vasoactive amine, breathing under nasal cannula and proceed with emergency hemodialysis. Acidosis was corrected after 6h of hemodialysis. Patient turned eupneic in room air and presented renal function improvement (BUN 44mg/dL; Creatinine 2.66mg/dL). She continued under intensive care and daily hemodialysis for another 4 days. The etiological investigation excluded glomerulopathies of rheumatological cause, blood cultures, serology for hepatitis, HIV and Dengue were all negative. However, respiratory viral panel was positive for influenza A. Although metformin serum dosage was not performed, renal function stability without the need for hemodialysis was only achieved after discontinuation of metformin. The main diagnostic hypothesis was metformin-induced severe metabolic acidosis. Finally, the patient was discharged on day 10, with stable renal function without hemodialysis (creatinine 2.19mg/dL eGFR 22mL/min/1.73m2) and no neurological deficits. The patient was referred to the endocrinologist and nephrologist to follow-up. Conclusion Metformin is affordable, safe and widely prescribed since the 50's. Although rare, metformin-induced lactic acidosis is a lethal toxicity, with identifiable risk factors that must be considered by prescribers. References Lazarus, Benjamin et al. "Association of Metformin Use With Risk of Lactic Acidosis Across the Range of Kidney Function: A Community-Based Cohort Study." JAMA internal medicine vol. 178,7 (2018): 903-910. doi: 10.1001/jamainternmed.2018.0292 Salpeter, Shelley R et al. "Risk of fatal and nonfatal lactic acidosis with metformin use in type 2 diabetes mellitus." The Cochrane database of systematic reviews vol. 2010,4 CD002967. 14 Apr. 2010, doi: 10.1002/14651858.CD002967.pub4 Presentation: Sunday, June 12, 2022 12:30 p.m. - 2:30 p.m.

An Endorsement of the Removal of Race From GFR Estimation Equations: A Position Statement From the National Kidney Foundation Kidney Disease Outcomes Quality Initiative

An Endorsement of the Removal of Race From GFR Estimation Equations: A Position Statement From the National Kidney Foundation Kidney Disease Outcomes Quality Initiative

A comparison of postoperative blood lactate concentrations and kinetics in cardiac surgical patients being and not being administered metformin

Aim. Early discontinuation of metformin before cardiac surgery is advised by several national societies but no hard evidence exist supporting this practice. This precaution is mostly extrapolated by data on different clinical settings. The aim of this study is to investigate the impact of preoperative metformin use on lactate concentrations and lactate clearance during the first postoperative day after cardiac surgery.Methods. Among 367 consecutive patients who underwent elective on-pump cardiac surgery from January 2019 to October 2019, 109 were diabetics, 74 of which were treated with metformin. Data on lactate concentrations and clearance during the first postoperative day were prospectively collected on arrival, H6, H12 and H24 in the ICU and compared. A subgroup analysis focusing only on diabetic patients was also performed. Repeated measures multivariate analysis of variance (MANOVA) was used to investigate the data based on group, time and their interaction effects.Results. Lactate concentrations were the same for both groups upon arrival in the ICU. Interestingly, metformin users had lower lactate concentrations than non-users on the following measurements (p = 0.003 at 6 h and p = 0.01 at 24 h). No significant interaction was found between the two groups (p = 0.76). No difference was found between the two groups in terms of lactate clearance (p = 0.53). In the subgroup analysis no difference was found between metformin users and non-users neither on lactate concentrations (p = 0.61) nor on lactate clearance (p = 0.86).Conclusions. In a post cardiac surgery ICU setting, using metformin up until the night before surgery was not associated with increased postoperative lactate concentrations or impaired lactate clearance.

Metformin, placebo, and endocrine therapy discontinuation among participants in a randomized double-blind trial of metformin versus placebo in hormone receptor–positive early-stage breast cancer (CCTG MA32).

526 Background: The MA32 study (NCT01101438) investigated whether 5-years of metformin improves invasive disease-free survival in early-stage breast cancer (BC). Non-adherence to endocrine therapy (ET) and medications for chronic conditions is common, and increases with drug toxicity and polypharmacy. This secondary analysis evaluates rates and predictors of early discontinuation of metformin, placebo, and ET among participants with HR positive BC. Methods: Patients with high-risk non-metastatic BC were randomized to 60 months of metformin (850 mg BID) or placebo. Patients were administered bottles of metformin/placebo every 180 days. Metformin/placebo compliance was defined as a bottle dispensed at month 48 or later (i.e., medication supplied for 54 months). The ET compliance analysis included patients with HR positive BC who received adjuvant ET with start and stop date reported and was defined as &gt; 48 months of use. Associations of baseline covariates with drug compliance and with ET adherence were examined using multivariable models. Results: Among the 2,521 HR-positive BC patients, 32.9% were non-compliant to study drug. Non-compliance was higher among patients on metformin vs. placebo (37.1% vs. 28.7%, p&lt;0.001). Reassuringly, compliance to ET was similar between treatment arms (28.4% vs 28.0%, p=0.86). Patients who were non-compliant to endocrine therapy, were more likely to be non-compliant to study therapy (38.8% vs. 30.1%, p&lt;0.0001). In a multivariable analysis, study drug non-compliance was increased with metformin vs. placebo (OR=1.43, 95% CI, 1.21-1.70; p&lt;0.0001); grade 1 or greater GI toxicity during the first year (70.9% vs. 53.2%; OR=1.20, 95% CI, 1.01-1.44; p=0.044); lower age (age &lt; 50 OR = 1.44, 95% CI, 1.21 – 1.71; p&lt;0.01) and higher body mass index (BMI &gt; 30, OR=1.49, 95% CI, 1.25 - 1.77; p&lt;0.0001). Study drug non-compliance was decreased with prior receipt of chemotherapy (OR = 0.68, 95% CI, 0.50–0.84; p&lt;0.001). Non-compliance with endocrine therapy was associated with increased non-compliance to study drug (OR: 1.47, 95% CI, 1.20, 1.70, p &lt; 0.0001). Study drug (metformin vs placebo) non-compliance was not associated with endocrine therapy non-compliance (OR=0.97, 95% CI, 0.80-1.17; p=0.74). Conclusions: While non-compliance was higher among patients on metformin, it was still considerable among patients on placebo. Among other factors, development of GI toxicity and non-adherence to ET were associated with non-adherence to study drug. Many BC patients on ET are prescribed metformin and other oral medications for the treatment of chronic conditions. Reassuringly, non-adherence to study drug did not impact endocrine therapy adherence. Attention to global medication adherence is needed to improve BC and cardiovascular outcomes in cancer survivors. Clinical trial information: NCT0110143.

Metformin for Preventing Progression From Prediabetes to Diabetes Mellitus in People Living With Human Immunodeficiency Virus.

BackgroundDiabetes mellitus (DM) and human immunodeficiency virus (HIV) itself increase the risk for cardiovascular diseases in people living with HIV (PLHIV). Prediabetes, a condition preceding DM, is common in PLHIV receiving antiretroviral therapy (ART). Both metformin and lifestyle interventions have been established to reduce the risk of progression from prediabetes to DM in the general population. This study aimed to evaluate the efficacy of metformin for preventing DM in prediabetic PLHIV.MethodsAn open-label randomized controlled clinical trial was conducted in HIV-positive persons with prediabetes. The participants were randomized into two groups: the metformin group (received metformin) and the control group (did not receive metformin). All participants were counseled regarding diet control and lifestyle modification and followed for 12 months. The primary endpoint was the development of DM. Fasting plasma glucose (FPG), two-hour plasma glucose (2-h PG) after 75 g oral glucose tolerance test (OGTT), hemoglobin A1c (HbA1c), and computer-based homeostatic model assessment index of beta-cell function (HOMA%B) and insulin resistance (HOMA-IR) were analyzed.ResultsSeventy-four participants were enrolled, 37 in each group. The mean age was 49.6 years, and 68.9% were males. At baseline, the mean CD4 cell count was 570 cells/mm3, and the mean body mass index (BMI) was 24.6 kg/m2. Baseline characteristics including age, sex, BMI, waist/hip ratio, duration of ART, ART regimen, CD4 cell count, and HIV RNA were similar between the two groups. The mean FPG, 2-h PG, HbA1c, HOMA%B, and HOMA-IR at baseline were also similar between the two groups. At 12 months, one participant in the metformin group and three in the control group developed DM (risk reduction: 5.41%; 95% confidence interval (CI): −6.92%-18.78%). When we compared changes in parameters between the two groups, there were trends toward more changes in HbA1c (DeltaHbA1c) at both six months (metformin group versus control group: -0.17% ± 0.20% versus 0.02% ± 0.58%; p = 0.074) and 12 months (metformin group versus control group: -0.05% ± 0.23% versus 0.06% ± 0.27%; p = 0.065). When we considered changes in all parameters in each group, the metformin group had significant reductions in body weight (BW) and BMI at both six and 12 months, and significant reductions in HbA1c and HOMA-IR at six months. No participant had adverse effects that led to the discontinuation of metformin. No cardiovascular event was observed during the study period.ConclusionsMetformin tends to improve HbA1c and insulin resistance and may prevent progression from prediabetes to DM in HIV-positive persons with prediabetes. A further large study with a longer study period is needed to evaluate the long-term benefit of metformin.

Oral and intravenous pharmacokinetics of metformin with and without oral codeine intake in healthy subjects: A cross‐over study

The aim of the study was to investigate if there is a clinically relevant drug interaction between metformin and codeine. Volunteers were randomized to receive on four separate occasions: (A) orally administered metformin (1 g), (B) intravenously administered metformin (0.5 g), (C) five doses of tablet codeine 25 mg; the last dose was administered together with oral metformin (1 g), and (D) five doses of tablet codeine 25 mg; the last dose was administered together with metformin (0.5 g) intravenously. Blood samples were drawn for 24 h after administration of metformin, and for 6 h after administration of codeine and analyzed using liquid chromatography and tandem mass spectrometry. Healthy volunteers genotyped as CYP2D6 normal metabolizers (*1/*1) without known reduced function variants in the OCT1 gene (rs12208357, rs34130495, rs34059508, and rs72552763) were invited. The median absorption fraction of metformin was 0.31 and was not influenced by codeine intake. The median time to maximum concentration (Tmax) after oral intake of metformin was 2 h without, and 3 h with codeine (p = 0.06). The geometric mean ratios of the areas under the plasma concentration time‐curve (AUCs) for morphine and its metabolites M3G and M6G for oral intake of metformin‐to‐no metformin were 1.21, 1.31, and 1.27, respectively, and for i.v. metformin‐to‐no metformin 1.28, 1.34, and 1.30, respectively. Concomitant oral and i.v. metformin increased the plasma levels of morphine, M3G and M6G. These small pharmacokinetic changes may well contribute to an increased risk of early discontinuation of metformin. Hence, a clinically relevant drug‐drug interaction between metformin and codeine seems plausible.

Annals for Educators - 6 October 2020.

Annals for Educators - 6 October 2020.

Discontinuation of metformin to prevent metformin-induced high colonic FDG uptake: is 48\xa0h sufficient?

ObjectiveIn this retrospective, single-center observational study, we investigated whether discontinuing metformin for at least 48 h prevents metformin-induced [18F]fluorodeoxyglucose (FDG) uptake in all segments of the colon.MethodsPatients with type 2 diabetes who were using metformin before undergoing an FDG PET/CT scan were included. Two groups were created: patients who discontinued metformin for less than 48 h (< 48 h group) and patients who discontinued metformin for between 48 and 72 h (≥ 48 h group). A control group comprised non-diabetic patients who were not using metformin before undergoing an FDG PET/CT. We visually scored the uptake of FDG in four segments of the colon—the ascendens, transversum, descendens, and rectosigmoid—using a four-point scale (1–4) and considered scores of 3 or 4 to be clinically significant.ResultsColonic FDG uptake in the ≥ 48 h group (n = 23) was higher than uptake in the control group (n = 96) in the colon descendens [odds ratio (OR) 14.0; 95% confidence interval (CI) 4.8–40.9; p value: 0.001] and rectosigmoid (OR 11.3; 95% CI 4.0–31.9; p value: 0.001), and there was no difference in the colon ascendens and transversum. Colonic FDG uptake in the < 48 h group (n = 25) was higher than uptake in the ≥ 48 h group (n = 23) in the colon transversum (OR 4.8; 95% CI 1.3–18.5; p value: 0.022) and rectosigmoid (p value: 0.023), and there was no difference in the colon ascendens and descendens.ConclusionsDiscontinuing metformin for 48 h before undergoing an FDG PET/CT still gives a high uptake in the distal parts of the colon when compared with non-diabetic patients who are not using metformin. Discontinuing metformin for 48 h seems to be useful for scanning the more proximal segments of the colon.

Effect of continuous use of metformin on kidney function in diabetes patients with acute myocardial infarction undergoing primary percutaneous coronary intervention

BackgroundDiabetes patients presenting with ST-segment elevation myocardial infarction (STEMI) scheduled for primary percutaneous coronary intervention (PCI) have an increased risk of contrast induced-acute kidney injury (CI-AKI). The effects of continuous use of metformin on kidney function are still controversial in patients submitted to primary PCI. This study aimed to assess continuous metformin therapy on kidney function in diabetic patients undergoing coronary intervention.MethodsTwo hundred eighty-four patients with metformin-treated diabetes, who underwent coronary intervention within 24 h for STEMI, were enrolled in the retrospective study. All the patients had estimated glomerular filtration rate (eGFR) of > 30 mL/min/1.73 m2. According to the physicians’ decisions after admission, 119 patients continued metformin treatment after primary PCI, while 165 patients discontinued it > 48 h after the procedure. Serum creatinine was collected at admission and within 48 h post primary PCI to evaluate the incidence of CI-AKI. We performed a multiple logistic regression analysis to examine the determinants of CI-AKI.ResultsNo statistical difference in CI-AKI incidence between the continuous and the discontinuous metformin group (12.6%vs10.3%, p = 0.545). Multivariable logistic regression analysis indicated eGFR ≤60 ml/min/1.73 m2[p = 0.025, OR: 3.131; 95% CI (1.156–8.482)] and contrast volume [p = 0.002, OR: 1.010; 95% CI (1.004–1.016)] were predictive factors of CI-AKI. Metformin therapy was irrelevant to CI-AKI [p = 0.365, OR: 0.698; 95% CI (0.320–1.521)]. No case of lactic acidosis was found in this study. Besides, the study supported discontinuation of metformin was not beneficial for patients’ blood glucose control after admission.ConclusionsThe study indicated that the metformin continuation after primary PCI for STEMI in diabetic patients with eGFR > 30 ml/min / 1.73 m2 did not increase the risk of CI-AKI.

Annals for Educators - 4 February 2020.

Annals for Educators - 4 February 2020.

1568-P: Discontinuation of Metformin among Patients with Reduced Renal Function

Background: In 2008, the American Diabetes Association (ADA) suggested metformin be used in patients with diabetes and reduced renal function. We evaluated time trends in metformin discontinuation for patients who reached reduced renal threshold. Methods: Using National Veterans Administration and Medicare databases, we assembled a cohort of metformin and glipizide users who reached serum creatinine &amp;gt;1.5/1.4 mg/dL for males/females. Odds ratio (OR) of medication discontinuation within 180 days of renal threshold over time was modeled using multivariable logistic regression, with metformin discontinuation in 2008 as reference. Results: There were 18,025 metformin patients and 22,595 glipizide who met renal threshold. In 2008, 55.3% metformin patients discontinued within 180 days of renal threshold. Figure 1 depicts probability of metformin and glipizide discontinuation annually. The odds of metformin discontinuation was 1.25 (1.23, 1.35) vs. glipizide. In a fitted regression of discontinuation probability, there was no statistical difference in slopes between the two treatments (p=0.125). Conclusions: Probability of discontinuing metformin with reduced renal function decreased over time but was more likely than glipizide discontinuation. The decrease in discontinuation over time was similar in both treatments. Disclosure P. Chu: None. M.R. Griffin: None. J. Min: None. A.J. Hackstadt: None. J.J. Chipman: None. R.A. Greevy: None. A.M. Hung: None. C.G. Grijalva: None. C. Roumie: None. Funding U.S. Department of Veterans Affairs (CX000570-07 to C.R.)

MON-LB002 Diabetes Care Network: A Telehealth Based Collaborative Approach to Scale Endocrine Expertise

Background: Diabetes Care Network (DCN) is a collaborative care pathway that uses a team approach via telehealth to modernize diabetes care delivery and scale the endocrine expertise for complex diabetic patients. Methods: We studied the efficacy and sustainability of our approach to improving diabetes care over 12 months among 101 Veterans with poorly controlled Type 2 Diabetes (T2DM) (A1c>9%) identified from the electronic database. Among all enrolled Veterans, 87 (86.1%) were followed for 12 months. We assessed consultation completion via E-consult and protocol-based continuity care collaboration with primary care liaisons. Means (SD), frequencies, and percentages are presented, and Spearman correlations were assessed. Statistical significance set at p<0.05. Results: The cohort (N=87) was 97.7% male, 90.8% white, had a mean age 67.2 (8.9), and an average of 3.3 comorbidities, 0.7 macro-, and 1.3 microvascular complications. Initial care delivered via E-consult within 2.6(1.7) days with weekly follow-up telephonic team meetings. Collaborative care in the study cohort (N=87) allowed for therapy optimization and/or escalation with the initiation of metformin in 9 (10.3%), SGLT-2-I in 6 (6.8%), DPP-4I in 8 (9.1%), insulin U500 in 8 (9.1%), GLP-1A agents in 25 (28.7%), any insulin in 12 (13.7%), discontinuation of metformin in 9 (10.3%) and oral sulfonylurea in 17 (19.5%) Veterans. Of the 24 (27%) non-insulin users at enrollment, 12 Veterans initiated insulin therapy by 12 months. A1C declined significantly from the baseline A1C of 10.2% (1.4), to 8.1% (0.99) at 3 months, 7.6% (0.96) at 6 months, and 7.5 % (0.86) at 12 months (all p<.0001). At 3, 6, 12 months, number of patients who achieved HBA1c <8 % were 38 (43.6%), 56 (64%), and 56 (64%), and number of patients who achieved HBA1c <7% were 10 (11.4%), 21 (24.1%), and 23 (26.4%), respectively. Non-statistically significant improvements were noted in Weight {229.3lbs (48.1) to 228.4lbs (46.9)}, LDL {89.0mg/dl (36.4) to 79.5mg/dl (32.5)}, systolic BP {130.5mmHg (16.1) to 123.9mmHg (17.5)}, and triglycerides {226.9 mg/dl (195.3) to 159.3 (97.4)}. Compared to the 12 months pre-enrollment period, no difference in healthcare utilization (ER visits or admissions) was noted in the post-enrollment period. From baseline to completion, only nonsignificant improvements were noted in secondary preventative therapy for the use of antiplatelet agents, ACE-I/ARB, moderate to high-intensity statins and, the frequency of urine microalbumin tests, and annual foot/ retinal exams. Conclusions: With the DCN approach, we show that using telehealth technologies and collaborative partnerships, endocrine expertise can successfully be scaled to address the shortage of endocrinologists and help attain improved diabetes control. Such pathways will alleviate the large burden on primary care and address primary care inertia with timely therapy optimizations. Unless otherwise noted, all abstracts presented at ENDO are embargoed until the date and time of presentation. For oral presentations, the abstracts are embargoed until the session begins. s presented at a news conference are embargoed until the date and time of the news conference. The Endocrine Society reserves the right to lift the embargo on specific abstracts that are selected for promotion prior to or during ENDO.

Continuation of Metformin Till Night Before Surgery and Lactate Levels in Patients Undergoing Coronary Artery Bypass Graft Surgery.

Background:Lactic acidosis is a rare but serious complication associated with metformin therapy in certain high-risk patients. NICE guidelines and the British National Formulary advise the discontinuation of metformin before surgery. The drug manufacturer's datasheet advises the withdrawal of metformin 48 h before surgery. However, the data regarding perioperative use of metformin is scarce.Aims:To evaluate the effect of continuation of metformin till night before surgery on lactate levels in patients undergoing coronary artery bypass graft (CABG) surgery.Materials and Methods:In this prospective cohort study, 1,800 consecutive patients who underwent CABG between 1st November 2015 and 31st October 2016 were enrolled. Following exclusion criteria, a total of 790 subjects were included for final analysis. Three-hundred and eight seven (48.9%) patients with diabetes received metformin till night before surgery (Met group), 239 (30.3%) patients with diabetes were non-metformin users (Non-Met group), and 164 (20.8%) patients were having no diabetes (Non-Diab group). Lactate levels and arterial pH were measured using arterial blood gas machine. Postoperative morbidity outcome data were obtained by collecting clinical data, routine biochemistry, and chest imaging.Results:The mean metformin dose was 1,124.6 mg/day (SD: 509.3; range: 500–2,500 mg/day). Mean postoperative lactate levels were 1.91 ± 0.7 in Met group, 2.04 ± 0.79 in Non-Met group, and 2.07 ± 0.78 in Non-Diab group. Lactic acidosis occurred in 41 patients and there was no difference among the groups [Met group = 18 (4.7%); Non-Met group = 14 (5.9%)]. Among secondary outcome measures, acute renal failure occurred more frequently in diabetic patients [Met group = 46 (11.9%) and Non-Met group = 32 (13.4%)] as compared with non-diabetic patients. There were no differences with regard to pneumonia, length of ICU stay, and duration of ventilatory support among the three groups.Conclusions:Continuation of metformin till night before surgery is not associated with significant changes in lactate levels in patients undergoing CABG.