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N/A N=25 Treatment

Continuous Glucose Monitoring to Reduce Hypoglycemia and Improve Safety After Gastric Surgery

Hypoglycemia, Reactive · Hypoglycemia

Enrolled (actual)
25
Serious AEs
2.1%
Results posted
Aug 2023
Primary outcome: Primary: Percentage of Time Sensor Glucose <70 mg/dL in the Masked Versus the Unmasked Phase. — 4.7; 2.9 Percentage of time — p=0.04

Study Design & Population

Study type
Interventional
Phase
N/A
Interventions
Dexcom CGM masked (Device); Dexcom CGM unmasked (Device)
Age
Adult, Older Adult · 18+ yrs
Sex
All
Sponsor
Joslin Diabetes Center
Primary completion
Nov 2021

Outcome Measures

OutcomeResultp-value
PRIMARY
Percentage of Time Sensor Glucose <70 mg/dL in the Masked Versus the Unmasked Phase.
4.7; 2.9 0.04 sig
PRIMARY
Percentage of Time Sensor Glucose <60mg/dL in the Masked Versus the Unmasked Phase
1.4; 0.7 0.03 sig
PRIMARY
Percentage of Time Sensor Glucose <54 mg/dL in the Masked Versus the Unmasked Phase
0.6; 0.2 0.14
SECONDARY
Median Sensor Glucose Level During Masked Versus Unmasked Phases of Wear
97.5; 97.0 0.45
SECONDARY
Mean Sensor Glucose Level During Masked Versus Unmasked Phases of Wear
103.8; 104.1 0.35
SECONDARY
Peak Sensor Glucose Level During Masked Versus Unmasked Period of CGM Wear
263.0; 256.0 0.53
SECONDARY
Sensor Glucose Level Range (Highest Sensor Glucose Minus Lowest Sensor Glucose mg/dL) During Masked Versus Unmasked Period of CGM Wear
221.5; 209.5 0.47
SECONDARY
Nadir Sensor Glucose Level During Masked Versus Unmasked Period of CGM Wear
40.0; 42.0 0.65
SECONDARY
Percent of Time Sensor Glucose 70-180 mg/dL During Period of CGM Wear, Masked Versus Unmasked Phase
90.8; 94.8 0.004 sig
SECONDARY
Percentage of Time Sensor Glucose Level >180 mg/dL During Period of CGM Wear, Masked Versus Unmasked Phase
3.1; 1.7 0.05
SECONDARY
Percentage of Time Sensor Glucose Level >250 mg/dL During Periods of CGM Wear, Masked Versus Unmasked Phase
0.1; 0.1 0.22
SECONDARY
Glycemic Variability as Measured by the Standard Deviation of Sensor Glucose Level Data During Periods of CGM Wear, Masked Versus Unmasked Phase
29.8; 26.6 0.09
SECONDARY
Mean Coefficient of Variation of Sensor Glucose Data During Period of CGM Wear, Masked Versus Unmasked Phase
23.6; 23.0 0.25
SECONDARY
Mean Amplitude of Glycemic Excursion (MAGE) of Sensor Glucose Levels During Periods of CGM Wear, Masked Versus Unmasked Phase
79.6; 74.0 0.04 sig
SECONDARY
24 Hour Continuous Overall Net Glycemic Action (CONGA) for Sensor Glucose Data During Periods of CGM Wear, Masked Versus Unmasked Phase
35.6; 33.0 0.15
SECONDARY
1 Hour Continuous Overall Net Glycemic Action (CONGA) for Sensor Glucose Data During Periods of CGM Wear, Masked Versus Unmasked Phase
35.5; 33.2 0.03 sig
SECONDARY
2 Hours, Continuous Overall Net Glycemic Action (CONGA) for Sensor Glucose Data During Periods of CGM Wear, Masked Versus Unmasked Phase
36.1; 36.9 0.04 sig
SECONDARY
4 Hours, Continuous Overall Net Glycemic Action (CONGA) for Sensor Glucose Data During Periods of CGM Wear, Masked Versus Unmasked Phase
38.9; 37.0 0.32
SECONDARY
Total Number of Hypoglycemic Events During the Masked Versus the Unmasked Phases of CGM Wear, as Defined by a Sensor Glucose <70 mg/dL, for at Least 15 Minutes
1.6; 1.8 0.41
SECONDARY
Total Number of Hypoglycemic Events Defined by a Sensor Glucose <60 mg/dL, for at Lease 15 Minutes, During the Masked Versus Unmasked CGM Phase
0.7; 0.5 0.04 sig
SECONDARY
Total Number of Hypoglycemic Events Defined by a Sensor Glucose <54 mg/dL, for at Least 15 Minutes, During the Masked Versus Unmasked CGM Phase
0.3; 0.2 0.08

Summary

The purpose of this study is to see if the use of a continuous glucose monitor (CGM) by people who experience low blood sugars (hypoglycemia) after gastric surgery can help reduce the number and severity of low blood sugar episodes.

Eligibility Criteria

Inclusion Criteria

  • Males or females diagnosed with ongoing post-bariatric or post-gastric surgery hypoglycemia with prior episodes of neuroglycopenia
  • Age 18-65 years of age, inclusive, at screening
  • Willingness to provide informed consent and follow all study procedures, including attending all scheduled visits.

Exclusion Criteria

  • Documented hypoglycemia occurring in the fasting state (> 12 hours fast);
  • Chronic kidney disease stage 4 or 5 (including end-stage renal disease);
  • Hepatic disease, including serum alanine transaminase (ALT) or aspartate aminotransferase (AST) greater than or equal to 3 times the upper limit of normal; hepatic synthetic insufficiency as defined as serum albumin 2.0;
  • Congestive heart failure, New York Heart Association (NYHA) class II, Ill or IV;
  • History of myocardial infarction, unstable angina or revascularization within the past 6 months or 2 or more risk factors for coronary artery disease including diabetes, uncontrolled hypertension, uncontrolled hyperlipidemia, and active tobacco use.
  • History of syncope (unrelated to hypoglycemia) or diagnosed cardiac arrhythmia
  • Concurrent administration of beta-blocker therapy;
  • History of a cerebrovascular accident;
  • Seizure disorder (other than with suspect or documented hypoglycemia);
  • Active treatment with any diabetes medications except for acarbose;
  • Active treatment with octreotide or diazoxide;
  • Active malignancy, except basal cell or squamous cell skin cancers;
  • Personal or family history of pheochromocytoma or disorder with increased risk of pheochromocytoma (multiple endocrine neoplasia (MEN) 2, neurofibromatosis, or Von Hippel-Lindau disease);
  • Known insulinoma;
  • Major surgical operation within 30 days prior to screening;
  • Hematocrit< 33%;
  • Bleeding disorder, treatment with warfarin, or platelet count <50,000;
  • Blood donation (1 pint of whole blood) within the past 2 months;
  • Active alcohol abuse or substance abuse;
  • Current administration of oral or parenteral corticosteroids;
  • Pregnancy and/ or lactation: For women of childbearing potential: there is a requirement for a negative urine pregnancy test and for agreement to use contraception during the study and for at least 1 month after participating in the study. Acceptable contraception includes birth control pill/patch I vaginal ring, Depo-Provera, Norplant, an intrauterine device (IUD), the double barrier method (the woman uses a diaphragm and spermicide and the man uses a condom), or abstinence.
  • Use of an investigational drug within 30 days prior to screening.
View full record on ClinicalTrials.gov →

Data sourced from ClinicalTrials.gov (NCT03353415). Outcome figures and adverse-event rates are extracted automatically from the registry's posted results and are provided for clinician reference, not as a substitute for the primary publication.

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