Prevalence and Risk Factors for Postoperative Delirium 48 Hours After Surgery (DELPO)

March 18, 2026 updated by: Fundacin Biomedica Galicia Sur

Prevalence and Risk Factors for Postoperative Delirium 48 Hours After Surgery: Multicenter Cohort Study.

To determine the overall prevalence of postoperative delirium (POI) and its association with different risk factors in order to establish prevention plans to reduce its incidence and/or duration in Spanish hospitals.

To this end, patients over 18 years of age who underwent urgent and scheduled surgery requiring hospital admission under any type of anaesthesia during two specific days will be recruited and pre-, intra- and postoperative data will be collected.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Study Type

Observational

Enrollment (Actual)

2442

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Spain
      • A Coruña, Spain, 15006
        • Hospital Complex of A Coruña
      • Alicante, Spain, 03550
        • San Juan University Hospital
      • Alicante, Spain, 03550
        • Sant Joan University Hospital of Alacant
      • Badajoz, Spain, 06080
        • University Hospital of Badajoz
      • Barcelona, Spain, 08025
        • Santa Creu i Sant Pau Hospital
      • Barcelona, Spain, 08036
        • Clinic Hospital of Barcelona
      • Burgos, Spain, 09006
        • University Hospital of Burgos
      • Cáceres, Spain, 10003
        • San Pedro de Alcántara Hospital
      • Córdoba, Spain, 14004
        • Reina Sofía Hospital
      • Córdoba, Spain, 14940
        • Infanta Margarita Hospital
      • Girona, Spain, 17007
        • Josep Trueta University Hospital
      • Granada, Spain, 18016
        • San Cecilio University Hospital
      • León, Spain, 24071
        • Hospital of León
      • Lugo, Spain, 27003
        • Lucus Augusti Universitary Hospital
      • Madrid, Spain, 28046
        • La Paz University Hospital
      • Madrid, Spain, 28922
        • Hospital Universitario Fundacion Alcorcon
      • Madrid, Spain, 28040
        • San Carlos Clinical Hospital
      • Madrid, Spain, 28006
        • La Princesa University Hospital
      • Madrid, Spain, 28041
        • 12 Octubre University Hospital
      • Madrid, Spain, 28003
        • San José and Santa Adela Cruz Roja Central Hospital
      • Madrid, Spain, 28031
        • Infanta Leonor University Hospital
      • Madrid, Spain, 28046
        • La Paz Universitary Hospital
      • Ourense, Spain, 32005
        • Hospital Complex of Ourense
      • Pontevedra, Spain, 36071
        • Montecelo Hospital
      • Salamanca, Spain, 37007
        • University Hospital of Salamanca
      • Seville, Spain, 41009
        • Virgen de la Macarena University Hospital
      • Valencia, Spain, 46026
        • La Fe University and Polytechnic Hospital
      • Valencia, Spain, 46010
        • Clinic Hospital of Valencia
      • Valencia, Spain, 46014
        • General University Hospital of València
      • Valencia, Spain, 46017
        • Doctor Peset Universitary Hospital
      • Valladolid, Spain, 47003
        • University Clinical Hospital of Valladolid
      • Vigo, Spain, 36211
        • Ribera Povisa Hospital
      • Vigo, Spain, 36312
        • Álvaro Cunqueiro University Hospital
      • Zaragoza, Spain, 50009
        • Miguel Servet University Hospital
    • A Coruña
      • Ferrol, A Coruña, Spain, 15405
        • Hospital Complex of Ferrol
      • Santiago de Compostela, A Coruña, Spain, 15706
        • Santiago de Compostela University Clinical Hospital
    • Alicante
      • Elche, Alicante, Spain, 03203
        • General University Hospital of Elche
    • Balearic Islands
      • Palma de Mallorca, Balearic Islands, Spain, 07120
        • University Hospital of Son Espases
    • Barcelona
      • Badalona, Barcelona, Spain, 08916
        • Germans Trials i Pujol Hospital
      • L'Hospitalet de Llobregat, Barcelona, Spain, 08907
        • University Hospital of Bellvitge
      • Sabadell, Barcelona, Spain, 08208
        • Parc Taulí Hospital
    • Cantabria
      • Santander, Cantabria, Spain, 39008
        • Marqués de Valdecilla University Hospital
    • Castelló
      • Castellon, Castelló, Spain, 12004
        • General University Hospital of Castellón
    • Castellón
      • Vinaròs, Castellón, Spain, 12500
        • Comarcal Hospital of Castellón
    • Giguzkoa
      • Donostia / San Sebastian, Giguzkoa, Spain, 20014
        • Donostia University Hospital
    • Las Palmas
      • Las Palmas de Gran Canaria, Las Palmas, Spain, 35010
        • Doctor Negrín University Hospital
    • Lugo
      • Burela de Cabo, Lugo, Spain, 27880
        • Public Hospital of Mariña
      • Monforte de Lemos, Lugo, Spain, 27400
        • Regional Hospital of Monforte de Lemos
    • Madrid
      • Alcalá de Henares, Madrid, Spain, 28805
        • Príncipe de Asturias University Hospital
      • Coslada, Madrid, Spain, 28822
        • Henares Hospital
      • Fuenlabrada, Madrid, Spain, 28942
        • Fuenlabrada University Hospital
      • Majadahonda, Madrid, Spain, 28222
        • Puerta de Hierro University Hospital
      • Móstoles, Madrid, Spain, 28935
        • University Hospital of Móstoles
      • Pozuelo de Alarcón, Madrid, Spain, 28223
        • Quirónsalud University Hospital
      • San Sebastián de los Reyes, Madrid, Spain, 28702
        • Infanta Sofía University Hospital
      • Torrejón de Ardoz, Madrid, Spain, 28806
        • Quirónsalud Valle del Henares Hospital
    • Principality of Asturias
      • Gijón, Principality of Asturias, Spain, 33394
        • Cabueñes University Hospital
      • Oviedo, Principality of Asturias, Spain, 33011
        • Central University Hospital of Asturias
    • Santa Cruz De Tenerife
      • San Cristóbal de La Laguna, Santa Cruz De Tenerife, Spain, 38320
        • Canarias University Hospital
    • Valencia
      • Gandia, Valencia, Spain, 46702
        • Francesc de Borja Regional Hospital
      • Manises, Valencia, Spain, 46940
        • Manises Hospital
    • Vizcaya
      • Barakaldo, Vizcaya, Spain, 48903
        • Cruces University Hospital
      • Bilbao, Vizcaya, Spain, 48013
        • Basurto University Hospital

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Sampling Method

Probability Sample

Study Population

Patients over 18 years of age undergoing urgent and scheduled surgery requiring hospital admission, under any type of anaesthesia.

Description

Inclusion Criteria:

  • Patients over 18 years of age undergoing urgent and scheduled surgery requiring hospital admission, under any type of anaesthesia.

Exclusion Criteria:

  • Presence of pre-surgical delirium.
  • Outpatient surgery.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

Cohorts and Interventions

Group / Cohort
Intervention / Treatment
Single arm
Patients over 18 years of age undergoing urgent and scheduled surgery requiring hospital admission, under any type of anaesthesia.
Procedure: Any surgery under any type of anaesthesia.
Any surgery under any type of anaesthesia.

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Prevalence of Postoperative Delirium in Spanish hospitals.
Time Frame: 2 days
To determine the overall prevalence of Postoperative Delirium in Spanish hospitals.
2 days

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Prevalence of Postoperative Delirium by surgical speciality.
Time Frame: 2 days
To determine the prevalence of Postoperative Delirium by surgical speciality.
2 days
Risk factors on the prevalence of Postoperative Delirium
Time Frame: 2 days
Determine the influence of risk factors on the prevalence of Postoperative Delirium
2 days

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Fundacin Biomedica Galicia Sur

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

November 14, 2023

Primary Completion (Actual)

December 1, 2024

Study Completion (Actual)

December 1, 2024

Study Registration Dates

First Submitted

November 8, 2023

First Submitted That Met QC Criteria

November 8, 2023

First Posted (Actual)

November 13, 2023

Study Record Updates

Last Update Posted (Actual)

March 20, 2026

Last Update Submitted That Met QC Criteria

March 18, 2026

Last Verified

March 1, 2026

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

  • DELPO

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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