Skip to content

Role of Natural Light in the Prevention of Delirium After Cardiac Surgery: a Prospective Observational Study With Historical Control

Ruolo Della Luce Naturale Nella Prevenzione Del Delirium Dopo Cardiochirurgia: Studio Osservazionale Prospettico Con Controllo Storico

Status
Completed
Phases
Unknown
Study type
Observational
Source
ClinicalTrials.gov
Registry ID
NCT05936944
Acronym
iWOnDer
Enrollment
448
Registered
2023-07-10
Start date
2023-06-14
Completion date
2024-06-22
Last updated
2025-10-02

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Cardiac Surgery, Intensive Care Unit Delirium, Postoperative Delirium

Keywords

cardiac surgery, postoperative delirium, natural light

Brief summary

Postoperative delirium is a common complication that usually occurs acutely within the first 24 hours after surgery and resolves within 72 hours; it is common in all medical areas and particularly affects patients over the age of 65 and those with pre-existing cognitive impairments. It is characterized by difficulty organizing and coordinating thoughts and by slowing down motor functions that are observed for a short period after surgery. The study will be an observational prospective study with historical control (pre/post-study) whose primary objective is to identify the incidence of postoperative delirium in patients undergoing cardiac surgery. The population will be adult patients undergoing cardiac surgery at our University Hospital over a period of 12 months. The intervention will be exposure to totally artificial light (for patients hospitalized after the relocation of the department to its original location). The comparator will be exposure to natural light (for patients who will be hospitalized during our temporary transfer to an environment with natural lighting). The outcome will be the incidence of delirium, measured with the Confusion Assessment Method-Intensive Care Unit (CAM-ICU) scale; episodes of agitation requiring sedative drugs; time elapsed before onset of delirium. The study will last 12 months.

Interventions

OTHERExposure to totally artificial lighting

The second group of patients will be admitted to an ICU without windows and with a totally artificial lighting

Sponsors

Azienda Ospedaliero-Universitaria di Parma
Lead SponsorOTHER

Study design

Observational model
CASE_CONTROL
Time perspective
PROSPECTIVE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* planned cardiac surgery * planned ICU admission after surgery

Exclusion criteria

* cardiac surgery with total suspension of cerebral perfusion * patient with diagnosed dementia or major depressive disorder * patient unable to perform CAM-ICU evaluation * emergent surgery * patient in ICU before surgery

Design outcomes

Primary

MeasureTime frameDescription
Postoperative deliriumfirst five postoperative days or ICU discharge (wichever comes first)Occurrence of delirium, diagnosed with at least one positive CAM-ICU evaluation

Secondary

MeasureTime frameDescription
Postoperative episodes of agitationfirst five postoperative days or ICU discharge (wichever comes first)number of episodes of postoperative agitation (RASS\>+1) requiring farmacological treatment

Countries

Italy

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026