Intranasal Insulin to Prevent Intensive Care Unit Delirium

Trial statusNot yet recruiting
Trial phasePhase 2, Phase 3
Trial typeInterventional
Biological sexAll
Age65+
SponsorRadboud University Medical Center

About this trial

This study aims to assess the feasibility, tolerability, and exploratory efficacy of intranasal insulin to prevent delirium in ICU patients aged ≥65 years after complex elective cardiac surgery with cardiopulmonary bypass

Eligibility criteria

This trial does not accept healthy volunteers

Qualifiers

Age ≥65 years

Planned surgical admission to the ICU of the Radboudumc following complex cardiac surgery with CPB. Complex cardiac surgery is defined as all cardiac on-pump procedures except for isolated CABG

Able to receive intranasal spray (no obstructive nasal pathology precluding administration)

Informed consent from patient

Disqualifiers

Delirium at hospital admission

Non-complex or off-pump cardiac surgery

Known allergy/hypersensitivity to insulin or formulation excipients

Contra-indication for nasal administration (severe nasal pathology, recent nasal/sinus surgery, active epistaxis, active rhinitis, obstruction of either one or both nostrils)

Trial design

Design model

Parallel

Treatments tested in this trial

  • Intranasal insulin-40U

    Drug

    Intranasal isophane insulin administered twice daily. Each administration consists of two sprays of 10 IU (0.1 ml) in alternating nostrils, totalling to 40 IU per day.

  • Intranasal sodium chloride 0.9%

    Drug

    Intranasal sodium chloride 0.9% administered twice daily. Each administration consists of two sprays of 0.1 ml in alternating nostrils, totalling to 0.4mL per day.

Treatment groups

30 Participants
are divided into 2 treatment groups
Group A: Intranasal insulinExperimental treatment 1 intervention
Group B: Intranasal placebo (NaCl 0.9%)Placebo comparator 1 intervention

Trial outcomes

Primary outcomes

1

Feasibility: rate of recruitment

Proportion of eligible patients who are enrolled and randomized during the recruitment period.

Time frame
From start of study to end of study, with a maximum of 12 months
2

Feasibility: protocol adherence

Number of administered doses divided by number of planned doses

Time frame
From start of treatment up to a maximum of 5 days
3

Feasibility: participant retention and follow-up completeness

Proportion of randomized participants completing in-hospital data collection and 30-day follow-up (TICS-m).

Time frame
From start of study to end of study, with a maximum of 12 months
4

Tolerability

\- Local nasal adverse events (e.g., irritation, epistaxis) and incidence of hypoglycaemia (mild: glucose \<4.1 mmol/L, severe: \<2.2 mmol/L), defined as the number of local nasal adverse events and hypoglycaemia events.

Time frame
From start of treatment up to a maximum of 5 days

Secondary outcomes

1

Delirium incidence

Defined as \>= 1 positive delirium assessment(s)

Time frame
From start of treatment up to a maximum of 7 days
2

Delirium severity

Numeric, as assessed with the Delirium Rating Scale-Revised-98 (DRS-R-98)

Time frame
From start of treatment up to a maximum of 7 days
3

Delirium duration

Defined as number of days with positive delirium assessment

Time frame
From start of treatment up to a maximum of 7 days
4

Delirium and coma-free days

Defined as the number of days without delirium or coma

Time frame
From start of treatment up to a maximum of 7 days

Other outcomes

Sponsors and contacts

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