Anti-pyretic Therapy in Critically Ill Adults

NCT ID: NCT01173367

Last Updated: 2012-02-23

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

PHASE2

Total Enrollment

26 participants

Study Classification

INTERVENTIONAL

Study Start Date

2010-08-31

Study Completion Date

2012-01-31

Brief Summary

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The impact of fever and its management in different medical and surgical populations of critically ill patients has not been explained to date. The current study aims to assess the safety and efficacy of treatment of critically ill patients with a permissive versus aggressive fever treatment strategy.

Detailed Description

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The impact of fever and its management in different medical and surgical populations of critically ill patients has not been explained to date. Clinical trials in critically ill surgical patients have demonstrated null or potentially harmful effects of treatment of moderate degrees of fever. However, the pathophysiological effects of fever treatment are not well defined according to different patient populations, and clinical trial results are questionably generalized to medical ICU patients. This may relate to different mechanisms of fever in these populations and merits further investigation. There is also very little known about the exact timing of expression of the diverse pro and anti-inflammatory mediators involved in inducing, maintaining and eventually abrogating the fever response. Treating on the sole basis of an elevated temperature may lead to detrimental effects if the anti-inflammatory cascade naturally regulating this response is active, demonstrating the importance of understanding the normal pattern of regulation of these diverse mediators. The current study aims to assess the safety and efficacy of treatment of critically ill patients with a permissive versus aggressive fever treatment strategy. In addition, the effect of anti-pyretic therapy on markers of inflammation in neurologically intact critically ill adults will be evaluated.

The study population will be neurologically intact febrile adults (≥18 years) admitted to the Peter Lougheed Center (PLC) or Foothills Medical Center (FMC) ICU over a 12-month period in Calgary, Alberta, Canada. Consenting patients that fulfill enrolment criteria will be randomly allocated to either the permissive or aggressive treatment group (see Interventions section for details). Randomization will be concealed using the consecutively numbered sealed opaque envelope technique. Samples of blood will be collected from study patients at enrolment and subsequently at 12, 24 and 48 hours for assessment of inflammatory mediators.

Markers of feasibility will include the rate of enrolment, adherence of patients to assigned treatment regimen/protocol violation, acceptance of the protocol by staff, and facility and maintenance of random allocation technique. Markers of safety will include potential adverse events such as 28-day survival, nosocomial infection rate, and evidence of myocardial ischemia, or hepatocellular inflammation during the febrile episode.

Conditions

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Fever

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

NONE

Study Groups

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Aggressive Fever Treatment

Group Type ACTIVE_COMPARATOR

Aggressive Fever Treatment

Intervention Type OTHER

Patients assigned to the aggressive fever treatment protocol will receive acetaminophen 650 mg enterally every 6 hours for fever ≥ 38.3°C and external cooling will be initiated for temperatures ≥ 39.5°C. Acetaminophen and external cooling will be discontinued once core temperature is less than 38.3°C and 39.5°C respectively.

Permissive Fever Treatment

Group Type ACTIVE_COMPARATOR

Permissive Fever Treatment

Intervention Type OTHER

Patients assigned to the permissive treatment strategy will not receive anti-pyretic therapy until the temperature reaches 40.0°C at which point they will receive acetaminophen 650mg every 6 hours. External cooling will be initiated for temperatures ≥ 40.5°C. Acetaminophen and external cooling will be discontinued once core temperature is less than 40.0°C and 40.5°C respectively.

Interventions

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Aggressive Fever Treatment

Patients assigned to the aggressive fever treatment protocol will receive acetaminophen 650 mg enterally every 6 hours for fever ≥ 38.3°C and external cooling will be initiated for temperatures ≥ 39.5°C. Acetaminophen and external cooling will be discontinued once core temperature is less than 38.3°C and 39.5°C respectively.

Intervention Type OTHER

Permissive Fever Treatment

Patients assigned to the permissive treatment strategy will not receive anti-pyretic therapy until the temperature reaches 40.0°C at which point they will receive acetaminophen 650mg every 6 hours. External cooling will be initiated for temperatures ≥ 40.5°C. Acetaminophen and external cooling will be discontinued once core temperature is less than 40.0°C and 40.5°C respectively.

Intervention Type OTHER

Eligibility Criteria

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Inclusion Criteria

* Age ≥18 years old
* Fever (two consecutive measurements ≥ 38.3°C at least 2 hours apart or a single temperature measurement ≥ 39.5°C)
* Admitted to ICU with an expected length of stay at least 48 hours related to critical illness
* Attending physician approval

Exclusion Criteria

* Admission to ICU for support for specific procedure (e.g. endoscopy, acute dialysis, bronchoscopy)
* Acute brain injury due to any etiology
* Acute myocardial ischemia
* Documented hepatitis with elevated alanine aminotransferase (ALT) more than twice the upper limit of normal, or chronic hepatic failure (defined by evidence of cirrhosis on available imaging or known varices, ascites, hepatic encephalopathy, hepatorenal syndrome, and/or hepatocellular carcinoma)
* Hyperthermia syndromes (malignant hyperthermia, heat stroke, neuroleptic malignant syndrome, serotonin syndrome, or endocrine causes including thyrotoxicosis, pheochromocytoma, and adrenal crisis)
* Refractory shock with lactic acidosis \>4 mmol/L (at the time of screening for study enrollment) despite supportive therapy or need for paralytic treatment to reduce metabolic demand
* Requirement for use of anti-pyretic agents (acetaminophen or NSAIDs) for indications other than treatment of fever
* Receipt of anti-pyretic pharmacotherapy within 6-hours of expected study enrollment (650mg acetaminophen, 800mg ibuprofen, or 325mg acetylsalicylic acid)
* Contraindications to esophageal temperature monitoring
* Pregnancy (all women of child-bearing potential need to have a pregnancy test performed prior to enrollment)
* Time from onset of fever in the ICU to consideration for study enrollment is \> 12 hours
Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Canadian Intensive Care Foundation

OTHER

Sponsor Role collaborator

University of Calgary

OTHER

Sponsor Role lead

Responsible Party

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Daniel Niven

Intensivist, Department of Critical Care Medicine

Responsibility Role PRINCIPAL_INVESTIGATOR

Principal Investigators

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Kevin Laupland, MD MSc FRCPC

Role: PRINCIPAL_INVESTIGATOR

Faculty of Medicine, University of Calgary

Henry T Stelfox, MD PhD FRCPC

Role: PRINCIPAL_INVESTIGATOR

Faculty of Medicine, University of Calgary

Locations

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Intensive Care Unit, Peter Lougheed Center

Calgary, Alberta, Canada

Site Status

Intensive Care Unit, Foothills Medical Center

Calgary, Alberta, Canada

Site Status

Countries

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Canada

References

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Niven DJ, Stelfox HT, Leger C, Kubes P, Laupland KB. Assessment of the safety and feasibility of administering antipyretic therapy in critically ill adults: a pilot randomized clinical trial. J Crit Care. 2013 Jun;28(3):296-302. doi: 10.1016/j.jcrc.2012.08.015. Epub 2012 Oct 24.

Reference Type DERIVED
PMID: 23102531 (View on PubMed)

Niven DJ, Leger C, Kubes P, Stelfox HT, Laupland KB. Assessment of the safety and feasibility of administering anti-pyretic therapy in critically ill adults: study protocol of a randomized trial. BMC Res Notes. 2012 Mar 16;5:147. doi: 10.1186/1756-0500-5-147.

Reference Type DERIVED
PMID: 22420838 (View on PubMed)

Other Identifiers

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E-23090

Identifier Type: -

Identifier Source: org_study_id

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