ISRCTN ISRCTN16022198
DOI https://doi.org/10.1186/ISRCTN16022198
Secondary identifying numbers 34598
Submission date
31/07/2017
Registration date
14/08/2017
Last edited
20/09/2023
Recruitment status
No longer recruiting
Overall study status
Completed
Condition category
Infections and Infestations
Prospectively registered
Protocol
Statistical analysis plan
Results
Individual participant data

Plain English summary of protocol

Background and study aims
A fever (high temperature) is a normal response by the body to infection. When a very sick child has a fever, the usual reaction from clinicians (doctors/nurses) is to cool down the child. This can be done using drugs, such as paracetamol, using a cooling mat or sponging the child with water. The temperature at which clinicians usually start these treatments is about 37.5°C. There is strong evidence, however, that fever may be an important bodily response and may actually help a child to recover from infection. In 2013, the National Institute for Health and Care Excellence (NICE) updated guidance for managing fever in children. It recommended that drugs should not be used only for the purpose of reducing a child’s temperature. Most of the evidence for this recommendation came from research in non-critically ill children, therefore, it is unknown whether this recommendation should be applied to very sick children. The aim of this study is to compare giving treatments for fever at a higher temperature than usual, such as 39.5°C, with the usual temperature of around 37.5°C in children with infection admitted to an NHS paediatric intensive care unit (PICU). This is a small study to find out whether it is possible to perform a larger study to determine the effects of the current practice of strict control of fever with a more permissive approach. As large studies are expensive, it is important to be confident that this study can be done and that the different parts can work together. This study is the third part of an 18-month feasibility study. A feasibility study is research done before a full study to answer the question “can this trial be done?” It is used to estimate important factors such as willingness of parents/children to take part. The first part of this feasibility study (which has now completed) involved conducting interviews with parents/legal guardians to understand whether the proposed study is acceptable to them. Views were discussed on using deferred consent, as this study and the proposed bigger study will incorporate a deferred consent process. Deferred consent is an approach which has successfully been used in previous emergency/critical care studies and involves including a child in a study without prior consent from their parents/guardians and then seeking agreement later. The second part (which has almost completed) involved observing and collecting data on children with fever from infection in 22 PICUs to tell us how many children would need to take part in a full study and which are the best outcomes to use.

Who can participate?
Children aged under 16 with a confirmed or suspected infection causing a fever, admitted to PICU in four NHS hospitals

What does the study involve?
Participants are randomly allocated to either a permissive approach to fever management (starting drugs/cooling methods to control temperature once they reach a temperature of >39.5°C), or a restrictive approach (starting drugs/cooling methods to control temperature at ≥37.5°C). Telephone interviews/questionnaires are conducted with parents/legal representatives of the recruited participants, and focus groups/questionnaires with staff in the research sites. This is to further understand the feasibility of the consent and study procedures for the potential larger study.

What are the possible benefits and risks of participating?
There is the possibility of a beneficial effect from the permissive treatment, therefore it is not considered as carrying any significant risk, but rather carrying a potential benefit. The patients not receiving permissive treatment receive usual care and are not prone to unknown risk either. Young children may have seizures during a fever, but reducing a fever does not reduce this risk. The seizures are likely to be caused by the infection that the fever is trying to help the body heal. Another possible risk is that a high temperature uses extra energy and can make the heart beat more quickly. Patients receiving permissive treatment are therefore closely monitored.

Where is the study run from?
1. Great Ormond Street Hospital (UK)
2. Alder Hey Children's NHS Foundation Trust (UK)
3. Evelina London Children's Hospital (UK)
4. Great North Children's Hospital (UK)

When is the study starting and how long is it expected to run for?
April 2017 to March 2018

Who is funding the study?
National Institute for Health Research (UK)

Who is the main contact?
1. Dr Imran Khan
fever@icnarc.org
2. Prof. Mark Peters
mark.peters@ucl.ac.uk

Study website

Contact information

Dr Imran Khan
Public

Intensive Care Audit and Research Centre (ICNARC)
Napier House
24 High Holborn
London
WC1V 6AZ
United Kingdom

Phone +44 (0)20 7269 9277
Email fever@icnarc.org
Prof Mark Peters
Scientific

UCL Great Ormond Street Institute of Child Health
30 Guilford Street
London
WC1N 1EH
United Kingdom

Phone +44 (0)207 813 8213
Email mark.peters@ucl.ac.uk

Study information

Study designRandomised; Interventional; Design type: Process of Care, Management of Care
Primary study designInterventional
Secondary study designRandomised controlled trial
Study setting(s)Hospital
Study typeTreatment
Participant information sheet Not available in web format, please use the contact details below to request a patient information sheet
Scientific titleA multi-centre randomised, parallel group pilot clinical trial investigating the feasibility of a definitive trial of a permissive temperature strategy in critically ill children with known or suspected infection
Study objectivesThe aim of this study is to assess the feasibility of a trial comparing a permissive approach to fever (treat at ≥39.5 degC) with a standard restrictive approach (treat at >37.5 degC).
Ethics approval(s)London – Hampstead Research Ethics Committee, 11/08/2017, ref: 17/LO/1139
Health condition(s) or problem(s) studiedSpecialty: Children, Primary sub-specialty: Allergy, Infection and Immunity ; UKCRC code/ Disease: Infection/ Other viral diseases
InterventionCurrent interventions as of 04/05/2018:
The trial incorporates a pragmatic approach to temperature control in both the permissive group and restrictive group.
Permissive group: Treatments to reduce temperature are only permitted in response to a temperature at or above 39.5°C while mechanically ventilated.
Restrictive group: Treatments to reduce temperature are permitted in response to a temperature at or above 37.5°C while mechanically ventilated.
The treatment strategies for the restrictive and permissive group will commence from randomisation until PICU discharge or death.

Previous interventions:
The trial incorporates a pragmatic approach to temperature control in both the permissive group and restrictive group.
Permissive group: Treatments to reduce temperature are only permitted in response to a temperature at or above 39.5°C.
Restrictive group: Treatments to reduce temperature are permitted in response to a temperature at or above 37.5°C.
The treatment strategies for the restrictive and permissive group will commence from randomisation until PICU discharge or death.
Intervention typeOther
Primary outcome measureNumber of eligible patients recruited per site, per month is measured using the proportion of eligible children recorded in trial screening logs that were recruited to the Fever Pilot Trial at baseline
Secondary outcome measures1. Proportion of parents/legal representatives refusing deferred consent is measured as the proportion of recruited children whose parents subsequently declined to give consent or who withdrew their child from the Fever Pilot Trial having initially given consent through study complete (an average of 24 hours)
2. The acceptability of the information and documentation and of the consenting procedures is measured using the survey responses from parents who gave and declined to give consent; and
qualitative evaluation of telephone interview transcripts from interviews with parents who gave and declined to give consent at study complete (an average of 24 hours)
3. Adherence to the selected temperature thresholds for antipyretic intervention in both the higher temperature threshold (intervention) and standard care groups is measured as the proportion of time spent below the allocated threshold; and
the proportion of children that received antipyretic intervention on days when their maximum temperature did not reach the allocated threshold; and the proportion of children that did not receive antipyretic intervention on days when their maximum temperature exceeded the allocated threshold at six hourly observations of temperature and antipyretic use over the first seven days as well as daily maximum peak temperature until 28 days.
4. Separation between the randomised groups in peak temperature measurement over the first 48 hours following randomisation is assessed as the difference in the mean of the maximum temperature recorded during the first 48 hours following randomisation between the higher temperature threshold and standard care groups, presented with a 95% confidence interval at baseline
5. Length of ventilation and Length of PICU stay is measured as the proportion of randomised patients with outcome available in each group, mean (standard deviation) in each group, median and quartiles in each group at study completion (an average 2 days)
6. PICU mortality is measured as the proportion of randomised patients with outcome available in each group
number (percentage) in each group through study completion (an average 2 days)
7. Days of organ specific support is measured as proportion of randomised patients with outcome available in each group
through study completion (an average 2 days)
Overall study start date03/04/2017
Completion date13/04/2018

Eligibility

Participant type(s)Patient
Age groupAdult
Lower age limit18 Years
SexBoth
Target number of participantsPlanned Sample Size: 205; UK Sample Size: 205
Key inclusion criteriaCurrent inclusion criteria as of 04/05/2018:
1. Unplanned PICU admission
2. Age ≥ 28 days and < 16 years
3. Referral requiring PICU admission to a participating unit
4. Fever ≥ 37.5°C in the first 48 hours following contact with the paediatric retrieval service/PICU
5. New requirement for mechanical ventilation
6. Treating clinician presumes the cause of the fever is an infective process

Previous inclusion criteria:
1. Unplanned PICU admission
2. Age ≥ 28 days and < 16 years
3. Referral requiring PICU admission to a participating unit
4. Fever ≥ 37.5°C in the first 48 hours following contact with the paediatric retrieval service/PICU
5. Receiving or requiring mechanical ventilation
6. Treating clinician presumes the cause of the fever is an infective process
Key exclusion criteriaCurrent exclusion criteria as of 04/05/2018:
1. Acute encephalopathy, including convulsive status epilepticus
2. Post-cardiopulmonary bypass or known/suspected cardiomyopathy/myocarditis
3. Rhabdomyolysis
4. Malignant hyperthermia, neuroleptic malignant syndrome or drug-induced hyperthermia
5. Receiving palliative care or death perceived as imminent
6. Previously recruited to the Fever Pilot Trial

Previous exclusion criteria:
1. Acute encephalopathy, including convulsive status epilepticus
2. Post-cardiopulmonary bypass or known/suspected cardiomyopathy/myocarditis
3. Severe rhabdomyolysis
4. Sickle cell disease
5. Malignant hyperthermia, neuroleptic malignant syndrome or drug-induced hyperthermia
6. Receiving palliative care or death perceived as imminent
Date of first enrolment01/10/2017
Date of final enrolment31/01/2018

Locations

Countries of recruitment

  • England
  • United Kingdom

Study participating centres

Great Ormond Street Hospital
Great Ormond Street Hospital for Children NHS Foundation Trust
Great Ormond Street
London
WC1N 3JH
United Kingdom
Alder Hey Children's NHS Foundation Trust
Eaton Road
Liverpool
L12 2AP
United Kingdom
Evelina London Children's Hospital
St Thomas' Hospital
Westminster Bridge Road
London
SE1 7EH
United Kingdom
Great North Children's Hospital
Victoria Wing
Royal Victoria Infirmary
Newcastle upon Tyne
NE1 4LP
United Kingdom

Sponsor information

Intensive Care National Audit And Research Centre (ICNARC)
Hospital/treatment centre

Napier House
24 High Holborn
London
WC1V 6AZ
England
United Kingdom

ROR logo "ROR" https://ror.org/057b2ek35

Funders

Funder type

Government

National Institute for Health Research
Government organisation / National government
Alternative name(s)
National Institute for Health Research, NIHR Research, NIHRresearch, NIHR - National Institute for Health Research, NIHR (The National Institute for Health and Care Research), NIHR
Location
United Kingdom

Results and Publications

Intention to publish date31/03/2018
Individual participant data (IPD) Intention to shareNo
IPD sharing plan summaryData sharing statement to be made available at a later date
Publication and dissemination planA report will be submitted to the NIHR HTA Programme for publication in Health Technology Assessment – deadline 31 March 2018

The findings will also be published in appropriate peer-reviewed scientific journals and relevant professional journals 6 months after trial end date.

The results of the Fever feasibility study will be disseminated to patients and their families via the Clinical Studies Group for Children (Anaesthesia, Critical Care and Cardiology) soon after the NIHR-HTA report publication.
IPD sharing planThe data sharing plans for the current study are unknown and will be made available at a later date.

Study outputs

Output type Details Date created Date added Peer reviewed? Patient-facing?
Results article results 01/02/2019 25/02/2019 Yes No
Protocol article 15/06/2022 12/08/2022 Yes No
HRA research summary 28/06/2023 No No
Results article Permissive versus restrictive temperature thresholds 07/03/2019 20/09/2023 Yes No
Results article acceptability findings 10/03/2021 20/09/2023 Yes No

Editorial Notes

20/09/2023: Publication reference added.
12/08/2022: Publication reference added.
25/02/2019: Publication reference added.
04/05/2018: The following changes have been made:
1. The participant exclusion criteria have been changed.
2. The participant inclusion criteria have been changed.
3. The interventions have been changed.
4. The overall trial end date has been changed from 31/03/2018 to 13/04/2018.