NCT04219384

Brief Summary

CIRCA aims to determine the incidence and outcomes of in-hospital cardiac arrest (IHCA) in UK intensive care units (ICUs) and explore associated risk factors with ICU and hospital survival and quality of survival following hospital discharge.

Trial Health

43
At Risk

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Trial has exceeded expected completion date
Enrollment
1,800

participants targeted

Target at P75+ for all trials

Timeline
Completed

Started Jan 2020

Typical duration for all trials

Geographic Reach
1 country

1 active site

Status
unknown

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

First Submitted

Initial submission to the registry

November 21, 2019

Completed
2 months until next milestone

First Posted

Study publicly available on registry

January 7, 2020

Completed
20 days until next milestone

Study Start

First participant enrolled

January 27, 2020

Completed
1.3 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

June 1, 2021

Completed
1.1 years until next milestone

Study Completion

Last participant's last visit for all outcomes

July 1, 2022

Completed
Last Updated

October 5, 2020

Status Verified

October 1, 2020

Enrollment Period

1.3 years

First QC Date

November 21, 2019

Last Update Submit

October 1, 2020

Conditions

Keywords

Critical Illness Related Cardiac Arrest

Outcome Measures

Primary Outcomes (1)

  • Incidence

    Incidence of critical illness related cardiac arrest

    Up to 12 months

Secondary Outcomes (12)

  • Subsequent incidence of in-hospital cardiac arrest

    Up to 12 months

  • Survival status at hospital discharge

    Up to 12 months

  • Survival status at 12 months

    12 months

  • Patient quality of life measured through EQ-5D-5L questionnaire completion at 3 months

    3 months

  • Patient quality of life measured through EQ-5D-5L questionnaire completion at 6 months

    6 months

  • +7 more secondary outcomes

Study Arms (1)

Critical-illness related cardiac arrest (CIRCA)

Those experiencing a critical illness-related cardiac arrest in a participating adult, general ICU

Eligibility Criteria

Age18 Years+
Sexall
Age GroupsAdult (18-64), Older Adult (65+)
Sampling MethodProbability Sample
Study Population

Adults having cardiac arrest (defined as receipt of chest compressions and/or defibrillation) after admission to an Intensive Care Unit (ICU) participating in the Case Mix Programme in a hospital participating in the National Cardiac Arrest Audit

You may qualify if:

  • Age 18 years old or more; and either
  • Cardiac arrest (defined as receipt of chest compressions or defibrillation) occurring while in-hospital and within intensive care (defined as either ICU, HDU or combined ICU/HDU); or
  • Family member of a patient surviving to discharge from intensive care after a cardiac arrest within ICU

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Intensive Care National Audit & Research Centre

London, WC1V 6AZ, United Kingdom

RECRUITING

Related Publications (2)

  • Darnell R, Broomhall J, Newell C, Gendall E, Harrison D, Rowan K, Doidge J, Mouncey P, Gould D, Thomas M. Critical Illness Related Cardiac Arrest (CIRCA): a prospective investigation of the incidence and outcome of cardiac arrest within intensive care units in the United Kingdom. Resuscitation. 2025 Dec 22:110933. doi: 10.1016/j.resuscitation.2025.110933. Online ahead of print.

  • Darnell R, Newell C, Edwards J, Gendall E, Harrison D, Sprinckmoller S, Mouncey P, Gould D, Thomas M. Critical illness-related cardiac arrest: Protocol for an investigation of the incidence and outcome of cardiac arrest within intensive care units in the United Kingdom. J Intensive Care Soc. 2022 Nov;23(4):493-497. doi: 10.1177/17511437211055899. Epub 2022 Mar 13.

MeSH Terms

Conditions

Critical Illness

Condition Hierarchy (Ancestors)

Disease AttributesPathologic ProcessesPathological Conditions, Signs and Symptoms

Study Officials

  • Matt Thomas, MD

    North Bristol NHS Trust

    PRINCIPAL INVESTIGATOR

Central Study Contacts

Study Design

Study Type
observational
Observational Model
COHORT
Time Perspective
PROSPECTIVE
Sponsor Type
OTHER
Responsible Party
SPONSOR

Study Record Dates

First Submitted

November 21, 2019

First Posted

January 7, 2020

Study Start

January 27, 2020

Primary Completion

June 1, 2021

Study Completion

July 1, 2022

Last Updated

October 5, 2020

Record last verified: 2020-10

Data Sharing

IPD Sharing
Will share

An anonymised study dataset will be available from ICNARC on request to the Chief Investigator, subject to any necessary approvals

Locations