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Completed

NCT Number: NCT00554281

Using Glucose Sensors to Prevent Hypoglycemia

Hypoglycemia is the most common complication of Type 1 diabetes particularly in those who strive for good glycemic control. In some patients there is a loss of awareness of hypoglycaemia so that the first manifestation of hypoglycaemia may be confusion or coma. Such a situation may carry risks that the patient may harm him or her self. Medtronic has recently developed a continuous glucose sensor that determines the glucose level every 3 minutes using a subcutaneous sensor and transmits the information to a remote device (Paradigm RT) that may be worn or left close by eg on a bedside table. The device may be programmed to alarm for a rapidly falling glucose or for low glucose levels.

We propose to use this in 16 patients with severe hypoglycemia as evidenced by a high HYPO score and see if we can decrease the number of hypoglycemic reactions and document this improvement with a better HYPO score.

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Key information

Conditions

Type 1 Diabetes Autoimmune Diseases Diabetes Mellitus Diabetes Mellitus, Type 1 Endocrine System Diseases Glucose Metabolism Disorders Hypoglycemia Immune System Diseases Metabolic Diseases Nutritional and Metabolic Diseases

Age range

18 year–70 year

Sex eligibility

All sexes

Study type

Interventional

Phase

Phase 3

Primary location

University of Alberta, Edmonton, Alberta, Canada

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About this study

Sixteen patients with Type 1 diabetes (as defined by: onset under the age of 25, lean at time of onset, continuous insulin use, and/or history of ketoacidosis and C-peptide negative), with a HYPO score over the seventy-fifth percentile (>423), will be approached and offered the study.

The study will be conducted over a three month time-frame. The first month will be a run-in period for participants to collect four weeks of glucose readings and information about their hypoglycemic events. These records will be used to calculate the baseline modified HYPO score. Patients will be screened during the first month for thyroid disease, celiac disease and Addison's disease.

During the second month they will meet with the study nurse for an intensive instruction period on the use of the Paradigm RT sensor. They will spend this month practicing to use the sensor and confirming they can use it adequately.

During the final month they will wear the sensor and collect glucose and hypoglycemia records for calculation of the final modified HYPO score.

The end point will be the change from the baseline modified HYPO score to the final four week HYPO score and this would be used to identify any improvement.

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Type 1 Diabetes Mellitus confirmed by C-peptide <0.10 nmol/L
  • age 18 - 70 yrs.
  • HYPO score >423
  • normal TSH, serum cortisol and anti-transglutaminase (ATTG)

Exclusion criteria

  • current diagnosis of cancer
  • planning a pregnancy
  • Inability to give informed consent

Treatment and study plan

Use of glucose sensor (Paradigm Guardian)

Device

Use glucose sensor to prevent episodes of severe hypoglycemia

Other names: Paradigm Guardian glucose sensor

Primary outcomes

  1. Decrease in HYPO score

    Time frame: 3 months

Secondary outcomes

  1. Number of episodes of severe hypoglycemia

    Time frame: 3 months

  2. Number of patients who decide to continue using the device

    Time frame: 3 months

Sponsors and collaborators

Lead sponsor

University of Alberta

Other

Registry information

Official study title

Paradigm Real Time Continuous Glucose Monitoring Device for the Prevention of Hypoglycemia

Important dates

Study start
2006
Primary completion
2008
Study completion
2008
First posted
Nov 6, 2007
Registry last updated
Sep 13, 2011

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

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This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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