Abstract:
OBJECTIVE:To evaluate the safety and effectiveness of the Loop Do-It-Yourself (DIY) automated insulin delivery system. RESEARCH DESIGN AND METHODS:A prospective real-world observational study was conducted, which included 558 adults and children (age range 1 to 71 years, mean HbA1c 6.8±1.0%) who initiated Loop either on their own or with community-developed resources and provided data for 6 months. RESULTS:Mean time-in-range 70-180 mg/dL (TIR) increased from 67±16% at baseline (prior to starting Loop) to 73±13% during the 6 months (mean change from baseline 6.6%, 95% confidence interval 5.9% to 7.4%; P<0.001). TIR increased in both adults and children, across the full range of baseline HbA1c, and in participants with both high and moderate income levels. Median time <54 mg/dL was 0.40% at baseline and changed by -0.05% (95% confidence interval -0.09% to -0.03%, P<0.001). Mean HbA1c was 6.8±1.0% at baseline and decreased to 6.5±0.8% after 6 months (mean difference= -0.33%, 95% confidence interval -0.40% to -0.26%, P<0.001). The incidence rate of reported severe hypoglycemia events was 18.7 per 100 person-years, a reduction from the incidence rate of 181 per 100 person-years during the 3 months prior to the study. Among the 481 users providing Loop data at 6 months, median CGM use was 96% (interquartile range 91% to 98%) and median time Loop was modulating basal insulin was at least 83% (interquartile range 73% to 88%). CONCLUSIONS:The Loop open source system can be initiated with community-developed resources and used safely and effectively by adults and children with T1D.
journal_name
Diabetes Technol Therjournal_title
Diabetes technology & therapeuticsauthors
Lum J,Bailey R,Barnes-Lomen V,Naranjo D,Hood K,Lal RA,Arbiter B,Brown A,DeSalvo DJ,Pettus J,Calhoun P,Beck RWdoi
10.1089/dia.2020.0535subject
Has Abstractpub_date
2020-11-23 00:00:00eissn
1520-9156issn
1557-8593pub_type
杂志文章abstract:OBJECTIVE:This study was designed to develop predictive formulas for precise insulin dosing in young children with type 1 diabetes (T1DM). RESEARCH DESIGN AND METHODS:Consecutive 1-year data from a group of 14 young patients (eight girls, six boys) 3.9 ± 0.8 years old with diabetes duration of 2.0 ± 0.8 years, transit...
journal_title:Diabetes technology & therapeutics
pub_type: 杂志文章
doi:10.1089/dia.2011.0184
更新日期:2012-05-01 00:00:00
abstract::It is widely accepted that noninvasive glucose monitoring (NIGM) has the potential to revolutionize diabetes therapy. However, current approaches to NIGM studied to date have not yet demonstrated a level of acceptable functionality to allow real-time use, beyond restricted fields of application. A number of reviews ha...
journal_title:Diabetes technology & therapeutics
pub_type: 杂志文章,评审
doi:10.1089/dia.2009.0095
更新日期:2010-01-01 00:00:00
abstract:AIM:This study explored the role of glycemic control on cardiac autonomic function, measured by heart rate variability (HRV), in youth with type 1 diabetes. PATIENTS AND METHODS:A retrospective cohort of 345 youth with type 1 diabetes (mean age, 18.5 years; duration, 10 years) participating in the SEARCH for Diabetes ...
journal_title:Diabetes technology & therapeutics
pub_type: 杂志文章,多中心研究
doi:10.1089/dia.2013.0147
更新日期:2013-12-01 00:00:00
abstract::Chronic hyperglycemia, as assessed by hemoglobin A1c (HbA1c) levels, has been associated with the development of microvascular and macrovascular complications of diabetes. Several studies have shown that acute hyperglycemia can add to the effect of chronic hyperglycemia in inducing tissue damage. Acute hyperglycemia c...
journal_title:Diabetes technology & therapeutics
pub_type: 杂志文章,评审
doi:10.1089/dia.2010.0146
更新日期:2011-03-01 00:00:00
abstract:BACKGROUND:Type 1 diabetic patients have high instability of daily glucose levels. The aim of this study was to evaluate the long-term effects of continuous subcutaneous insulin infusion (CSII) therapy, compared with multiple daily injections of insulin (MDI), on glucose variability, in young type 1 diabetic patients t...
journal_title:Diabetes technology & therapeutics
pub_type: 杂志文章
doi:10.1089/dia.2017.0334
更新日期:2018-02-01 00:00:00
abstract::Measuring the hemoglobin A(1c) (HbA(1c)) is the standard-of-care method to assess long-term glycemic control of patients with diabetes, describing the average glycemic level. However, the HbA(1c) does not reflect acute fluctuations in glucose levels. Variability of glycemia probably has an impact on the development of...
journal_title:Diabetes technology & therapeutics
pub_type: 杂志文章
doi:10.1089/dia.2008.0119
更新日期:2009-06-01 00:00:00
abstract:BACKGROUND:There is no consensus as to the best method to assess glycemic variability from continuous glucose monitoring (CGM) data. Rate of change has been suggested as a preferred method of assessing glycemic variability, but this assertion has not been validated. METHODS:Forty-eight hours of CGM data were analyzed ...
journal_title:Diabetes technology & therapeutics
pub_type: 杂志文章,多中心研究
doi:10.1089/dia.2010.0215
更新日期:2011-06-01 00:00:00
abstract:BACKGROUND:Drugs with unspecific stimulating effects on beta-cell secretion increase the homeostasis model assessment (HOMA)-B score, indicating improved beta-cell "function." We investigated whether the beta-cell protection provided by adding pioglitazone (PIO) to glimepiride (GLIM) in comparison to up-titrating the G...
journal_title:Diabetes technology & therapeutics
pub_type: 杂志文章,随机对照试验
doi:10.1089/dia.2010.0019
更新日期:2010-08-01 00:00:00
abstract::The transplantation of microencapsulated islets may allow reversal of hyperglycemia in the absence of immunosuppression. Poly-L-lysine (PLL) on capsules may potentiate the fibrotic reaction against implanted capsules. The aims of this study were to investigate how the biocompatibility of such capsules affects their fu...
journal_title:Diabetes technology & therapeutics
pub_type: 杂志文章
doi:10.1089/152091503322250677
更新日期:2003-01-01 00:00:00
abstract:BACKGROUND:There are currently few data available on the long-term use of continuous subcutaneous insulin infusion (CSII) (insulin pump) therapy in children. METHODS:Charts from 291 youth with type 1 diabetes (T1D) who were treated with CSII therapy for at least 1 year were reviewed. Data analysis included hemoglobin ...
journal_title:Diabetes technology & therapeutics
pub_type: 杂志文章
doi:10.1089/dia.2007.0214
更新日期:2007-10-01 00:00:00
abstract::Insulin infusion pump therapy has dramatically improved over the past 20 years and can now address some of the specific challenges related to toddlers with diabetes. We discuss both the non-randomized and randomized controlled trials comparing continuous subcutaneous insulin infusion (CSII) and multiple daily injectio...
journal_title:Diabetes technology & therapeutics
pub_type: 杂志文章
doi:10.1089/dia.2009.0182
更新日期:2010-06-01 00:00:00
abstract:OBJECTIVE:Exercise is a cornerstone of diabetes therapy in type 1 diabetes mellitus (DMT1) patients. The type of exercise is important in determining the propensity to hypoglycemia. We assessed, by continuous glucose monitoring (CGM), the glucose profiles during and in the following 20h after a session of two different...
journal_title:Diabetes technology & therapeutics
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1089/dia.2010.0038
更新日期:2010-10-01 00:00:00
abstract::Glucagon-like peptide 1 receptor agonists (GLP-1 RAs) are highly effective at lowering hemoglobin A1c (HbA1c) and facilitating weight loss. Four agents in the GLP-1 RA class, albiglutide, liraglutide, dulaglutide, and semaglutide, also have cardioprotective effects. However, subcutaneous administration of these agents...
journal_title:Diabetes technology & therapeutics
pub_type: 杂志文章,评审
doi:10.1089/dia.2019.0185
更新日期:2020-01-01 00:00:00
abstract:BACKGROUND:Previous studies of aerobic exercise have found lower sensor accuracy during exercise. Whether or not resistance exercise would also be associated with lower sensor accuracy has not yet been examined. This study sought to investigate the accuracy of continuous glucose monitoring sensor values at rest, during...
journal_title:Diabetes technology & therapeutics
pub_type: 杂志文章
doi:10.1089/dia.2012.0182
更新日期:2013-01-01 00:00:00
abstract::Several biopharmaceuticals, including insulin and insulin analogs, are, or shortly will be, off-patent, thereby providing an opportunity for companies to attempt to manufacture "copies" commonly referred to as biosimilars and also known as follow-on biologics. Reassurance that such copy biologics are equally safe and ...
journal_title:Diabetes technology & therapeutics
pub_type: 杂志文章,评审
doi:10.1089/dia.2012.0105
更新日期:2012-11-01 00:00:00
abstract:BACKGROUND:Improved insulin infusion set survival and faster insulin action are important issues for pump users and for the development of an artificial pancreas. The current recommendation is to change infusion sets every 3 days. Our objectives were to determine the effect of lipohypertrophy (LH) on infusion set survi...
journal_title:Diabetes technology & therapeutics
pub_type: 杂志文章,多中心研究,随机对照试验
doi:10.1089/dia.2015.0432
更新日期:2016-07-01 00:00:00
abstract:OBJECTIVE:This study assessed the accuracy and reliability of three continuous glucose monitoring (CGM) systems. RESEARCH DESIGN AND METHODS:We studied the Animas® (West Chester, PA) Vibe™ with Dexcom® (San Diego, CA) G4™ version A sensor (G4A), the Abbott Diabetes Care (Alameda, CA) Freestyle® Navigator I (NAV), and ...
journal_title:Diabetes technology & therapeutics
pub_type: 杂志文章,多中心研究,随机对照试验
doi:10.1089/dia.2013.0049
更新日期:2013-08-01 00:00:00
abstract:BACKGROUND:Gestational diabetes mellitus (GDM) is associated with adverse perinatal outcomes, if not treated. International guidelines recommend screening "all or high-risk women" at the initial prenatal visit, when a fasting plasma glucose (FPG) between 92 and 126 mg/dL is diagnostic for GDM. However, glucose testing ...
journal_title:Diabetes technology & therapeutics
pub_type: 杂志文章
doi:10.1089/dia.2011.0225
更新日期:2012-05-01 00:00:00
abstract:BACKGROUND:A1chieve(®) (Novo Nordisk A/S, Bagsværd, Denmark) was a prospective, multicenter, noninterventional study in 66,726 people with type 2 diabetes mellitus (T2DM) in 28 countries beginning biphasic insulin aspart 30 (aspart premix), insulin detemir, or insulin aspart in routine clinical care. SUBJECTS AND METH...
journal_title:Diabetes technology & therapeutics
pub_type: 杂志文章,多中心研究
doi:10.1089/dia.2013.0074
更新日期:2013-11-01 00:00:00
abstract::Although hypodermic needles rapidly deliver large doses of drugs such as insulin across the skin for systemic administration, the pain, local trauma, and difficulty to achieve sustained or complex delivery profiles has motivated development of novel alternative technologies. Microneedles, jet injectors, and thermal po...
journal_title:Diabetes technology & therapeutics
pub_type: 杂志文章,评审
doi:10.1089/152091501300209606
更新日期:2001-07-01 00:00:00
abstract:BACKGROUND:Insulin pumps (for continuous subcutaneous insulin infusion [CSII]) are used widely in type 1 diabetes mellitus. Although there has been considerable study of outcomes, there are few recent data on CSII-associated adverse events and no data on family perceptions of adverse events and their confidence in deal...
journal_title:Diabetes technology & therapeutics
pub_type: 杂志文章
doi:10.1089/dia.2013.0315
更新日期:2014-04-01 00:00:00
abstract::Maintaining optimal blood glucose (BG) control is difficult for type 1 diabetes mellitus (T1DM) patients when typical daily regimens of food, insulin and exercise are altered. Artificial intelligence (AI) systems consisting of treatment algorithms calibrated through large datasets of patient specific information may o...
journal_title:Diabetes technology & therapeutics
pub_type: 杂志文章
doi:10.1089/15209150050501989
更新日期:2000-01-01 00:00:00
abstract:BACKGROUND:Continuous subcutaneous insulin infusion (CSII) is believed to decrease glycemic variability and clinical hypoglycemia compared with the multiple daily insulin (MDI) regimen. To compare the indices of glycemic instability between CSII and MDI, we analyzed the continuous glucose monitoring system (CGMS) (Medt...
journal_title:Diabetes technology & therapeutics
pub_type: 临床试验,杂志文章
doi:10.1089/dia.2005.7.587
更新日期:2005-08-01 00:00:00
abstract:OBJECTIVE:This study was designed to measure pressure and shear reduction of a novel insole design. METHODS:We compared three multilayer viscoelastic insoles to a novel insole design (Glide-Soft, Xilas Medical, Inc., San Antonio, TX). The bottom pad of each insole was fabricated from firm-density Plastazote [Apex Foot...
journal_title:Diabetes technology & therapeutics
pub_type: 杂志文章
doi:10.1089/dia.2005.7.638
更新日期:2005-08-01 00:00:00
abstract:UNLABELLED:Abstract Objective: Controlled inpatient studies on the effects of food, physical activity (PA), and insulin dosing on glucose excursions exist, but such outpatient data are limited. We report here outpatient data on glucose excursions and its key determinants over 5 days in 30 adolescents with type 1 diab...
journal_title:Diabetes technology & therapeutics
pub_type: 杂志文章
doi:10.1089/dia.2012.0053
更新日期:2012-08-01 00:00:00
abstract:OBJECTIVES:Hyperglycemia is a prominent feature among patients exposed to major stress such as in cardiac surgery. The implementation of a continuous glucose monitoring system (CGMS) for glucose monitoring during cardiac surgery was assessed. SUBJECTS AND METHODS:Fifty-nine consecutive patients who underwent cardiac s...
journal_title:Diabetes technology & therapeutics
pub_type: 杂志文章
doi:10.1089/dia.2011.0154
更新日期:2012-03-01 00:00:00
abstract:BACKGROUND:Continuous glucose monitoring (CGM) time-series are often analyzed, retrospectively, to investigate glucose variability (GV), a risk factor for the development of complications in type 1 diabetes (T1D). In the literature, several tens of different indices for GV quantification have been proposed, but many of...
journal_title:Diabetes technology & therapeutics
pub_type: 杂志文章,meta分析
doi:10.1089/dia.2013.0252
更新日期:2014-10-01 00:00:00
abstract::We report the first case of the use of continuous subcutaneous insulin infusion (CSII) in a patient with Shwachman-Bodian-Diamond syndrome (SBDS) and diabetes. An Italian boy received diagnosis of SBDS at the age of 7 months (SBDS gene mutation: c.183-184TA → CT and c.258 + 2 T → C in compound heterozygous). The patie...
journal_title:Diabetes technology & therapeutics
pub_type: 杂志文章
doi:10.1089/dia.2014.0184
更新日期:2015-01-01 00:00:00
abstract:BACKGROUND:Prediction of glycemic profile is an important task for both early recognition of hypoglycemia and enhancement of the control algorithms for optimization of insulin infusion rate. Adaptive models for glucose prediction and recognition of hypoglycemia based on statistical and artificial intelligence technique...
journal_title:Diabetes technology & therapeutics
pub_type: 杂志文章
doi:10.1089/dia.2011.0093
更新日期:2012-02-01 00:00:00
abstract:BACKGROUND:To examine trimester-specific associations among glycemic variability, fetal growth, and birthweight in pregnancies with type 1 diabetes mellitus (Type 1 DM). METHODS:In this retrospective cohort study of 41 pregnant women with Type 1 DM, we used continuous glucose monitoring (CGM) data to calculate glycemi...
journal_title:Diabetes technology & therapeutics
pub_type: 杂志文章
doi:10.1089/dia.2017.0443
更新日期:2018-06-01 00:00:00