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Related Experiment Video

Updated: Jun 24, 2026

Halogenated Agent Delivery in Porcine Model of Acute Respiratory Distress Syndrome via an Intensive Care Unit Type Device

Halogenated Agent Delivery in Porcine Model of Acute Respiratory Distress Syndrome via an Intensive Care Unit Type Device

Published on: September 24, 2020

Targeted Sedation And Circadian Interventions In Mechanically Ventilated ICU Patients: A Narrative Review.

Jia Li¹, Rong Su², YuYun Lin¹

¹Panzhihua Central Hospital.

Journal of Visualized Experiments : Jove

|June 22, 2026

Summary

Mechanically ventilated ICU patients often experience disrupted circadian rhythms due to sedation and critical illness. Minimizing sedation and using environmental interventions may help, but more research is needed.

Related Experiment Videos

Last Updated: Jun 24, 2026

Halogenated Agent Delivery in Porcine Model of Acute Respiratory Distress Syndrome via an Intensive Care Unit Type Device

Halogenated Agent Delivery in Porcine Model of Acute Respiratory Distress Syndrome via an Intensive Care Unit Type Device

Published on: September 24, 2020

Area of Science:

Critical Care Medicine
Sleep Science
Neuroscience

Background:

Circadian rhythms are vital for physiological functions, including sleep, hormone secretion, and immune responses.
Mechanical ventilation in the ICU disrupts these rhythms due to critical illness, environmental factors, and sedation.
Disrupted circadian rhythms are linked to adverse outcomes like delirium in ICU patients.

Purpose of the Study:

To review the interplay between sedation practices, environmental interventions, and circadian disruption in mechanically ventilated ICU patients.
To synthesize current evidence on how sedation and environmental factors impact circadian rhythms in critical care.

Main Methods:

A structured, non-systematic literature search was conducted across major databases (MEDLINE/PubMed, Web of Science, Scopus) from 2000 to 2025.
The review included mechanistic and clinical studies examining sedation, environmental factors, and circadian rhythms.

Main Results:

Deep and prolonged sedation correlates with reduced melatonin, impaired sleep, and increased delirium risk.
Minimal sedation combined with non-pharmacological interventions (light/noise modulation, care clustering) may support circadian organization.
Evidence is largely observational, with conflicting findings and a need for more robust studies.

Conclusions:

A combined sedation and circadian rhythm management strategy is a novel but untested approach in ICUs.
Future research should focus on standardized circadian outcome measures and controlled designs to establish causality and efficacy.
Optimizing circadian alignment may improve patient outcomes in critical care settings.