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Can a CGM device handle poor blood flow? new study investigates

NCT ID NCT06297850

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed This study
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

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

60 people

The number who actually took part.

Started

Apr 2024

Finished

Jan 2026

Lead sponsor

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

18 years and older

Sex

Anyone

Healthy volunteers

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

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

  • Department of Anaesthesiology, Centre for Cancer and Organ Diseases, Rigshospitalet

    Copenhagen, The Capital Region of Denmark, 2100, Denmark

  • Department of Orthopaedic Surgery and Traumatology, Bispebjerg and Frederiksberg Hospital

    Copenhagen, The Capital Region of Denmark, 2400, Denmark

  • Surgical department, Bispebjerg and Frederiksberg Hospital,

    Copenhagen, The Capital Region of Denmark, 2400, Denmark

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