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ICU makeover: light and sound tweaks may help patients sleep

NCT ID NCT05694052

Symptom relief Sponsor: Pontificia Universidad Catolica de Chile Source: ClinicalTrials.gov ↗

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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 26, 2026 · Last updated Jun 26, 2026

Summary

This study tested a combination of dynamic light therapy, sound masking, and changes to nighttime care routines in 56 ICU patients recovering from critical illness. The goal was to see if these environmental changes could improve sleep quality and quantity, measured by brain wave monitoring and other methods. The researchers also looked at whether better sleep could reduce delirium and improve long-term recovery.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

Active substance
Multifaceted intervention of environment control (dynamic light therapy, auditory masking, and rationalization of ICU nocturnal patient activities)
What this could lead to
If it works, this could lead to a simple, non-drug way to improve sleep and reduce delirium in ICU patients, potentially improving recovery and quality of life after hospital discharge.
What could go wrong
This is a small, completed trial with only 56 patients, so results may not apply to all ICU patients. The intervention is complex and may be hard to implement consistently in different hospitals.

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.

Phase

Not a phased trial

Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.

Participants

56 people

The number who actually took part.

Started

May 2023

Finished

Jul 2025

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.

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: * Patient under invasive mechanical ventilation for at least 72 hours. * Patient without sedation or with superficial sedation level (SAS 3-4 by Sedation- Agitation Scale), during most of the daytime within the 24 previous hours Exclusion Criteria: * Patient who required mechanical ventilation in another episode of hospitalization in the 2 months before screening. * Patients with primary neurological or neurosurgical disease. * Presence of mental or intellectual disability prior to hospitalization or communication/language barriers. * Pre-existing comorbidity with a life expectancy not exceeding 6 months (eg, metastatic cancer). * Readmission to the ICU (patients can only be included if they are on their first ICU admission of the present hospitalization). * No fixed address for follow-up. * Patients with moderate to severe visual or hearing impairment. * Patients with known sleep disturbance before hospital admission. * Early limitation of therapeutic effort.

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Conditions

The condition(s) this trial relates to.

Parasomnias sleep disorder

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Sleep disturbance

Contacts and locations

Locations

  • Hospital Clínico UC CHRISTUS

    Santiago, Santiago Metropolitan, 8330024, Chile

More trials for these conditions

Other studies related to the condition(s) this trial covers.