Can a CGM device handle poor blood flow? new study investigates
NCT ID NCT06297850
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This completed study looked at whether the Dexcom G7 continuous glucose monitor stays accurate in diabetes patients who have poor blood circulation during hospital stays. Researchers compared CGM readings to standard finger-stick blood tests in 60 adults undergoing surgery or in the ICU. Participants wore a blinded CGM device for up to 10 days while receiving usual care.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- Dexcom G7 Continuous Glucose Monitoring (CGM) System
- What this could lead to
- If successful, this could confirm that the Dexcom G7 works reliably even when blood circulation is poor, improving diabetes monitoring in hospitals.
- What could go wrong
- This is a small observational study (60 people) that only checks accuracy, not treatment outcomes. Results may not apply to all patients or settings.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Participants
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60 people
The number who actually took part.
- Started
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Apr 2024
- Finished
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Jan 2026
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
Who is studied
To the answer of our two research questions, we include both patients with diabetes undergoing surgery, and patients with diabetes admitted to the intensive care unit with circulatory impariment, as described in the criteria above. We aim to exclude only patients with direct contraindications to the wear of the CGM.
- Ages
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18 years and older
- Sex
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Anyone
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * Medical history with diabetes mellitus requiring antidiabetic drugs * Age ≥18 years * Surgery with estimated surgery time ≥45 minutes with expected stay for at least one night in hospital postoperatively OR * Admission to the ICU with Circulatory impairment defined as need of vasopressors to maintain a mean arterial pressure (MAP) ≥65 mmHg and peripheral perfusion index \<1.5 Exclusion Criteria: * Local skin symptoms including infection at the posterior aspect of the upper arm that does not allow the sensor to be placed on an unaffected skin area * Contraindications to skin puncture (arteriovenous fistula for dialysis, post-mastectomy lymphoedema etc) * Known allergy to plaster used in the CGM device
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
Locations
-
Department of Anaesthesiology and Intensive Care, Bispebjerg Hospital
Copenhagen, The Capital Region of Denmark, 2400, Denmark
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Department of Anaesthesiology, Centre for Cancer and Organ Diseases, Rigshospitalet
Copenhagen, The Capital Region of Denmark, 2100, Denmark
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Department of Orthopaedic Surgery and Traumatology, Bispebjerg and Frederiksberg Hospital
Copenhagen, The Capital Region of Denmark, 2400, Denmark
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Surgical department, Bispebjerg and Frederiksberg Hospital,
Copenhagen, The Capital Region of Denmark, 2400, Denmark
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