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CompletedNCT00751634Updated May 6, 2013Results posted

Temperature Control in Central Fever in the Neuro-ICU

A Phase 4 interventional study of Gaymar Rapr-Round (external cooling blanket) in Fever and Brain Hemorrhage, sponsored by Northwestern University. Completed at 1 site in United States. Open to participants aged 18 Years to 85 Years. Per ClinicalTrials.gov, last updated 2013-05-06.

Sponsored by Northwestern University · Phase 4, Interventional, and Treatment

Phase
Phase 4
Study type
Interventional
Enrollment
20
Allocation
Not applicable
Ages
18 Years to 85 Years
Sex
All
01

Study summary

There are few treatments for central fever (fever that is due to the central nervous system, as opposed to an infectious source). We hypothesize that an externally applied cooling blanket will reduce temperature in neurologically ill patients with central fever.

02

Conditions studied

  • Fever
  • Brain Hemorrhage

Keywords

  • subarachnoid hemorrhage
  • intracerebral hemorrhage
  • fever
03

In context

Intracranial Hemorrhages

199 studies on the registry are indexed under Intracranial Hemorrhages; 64 are open to participants now.

This study's enrollment of 20 is below the median of 100 across 105 interventional studies indexed under Intracranial Hemorrhages.

Browse Intracranial Hemorrhages studies →

Lead sponsor

Northwestern University is the lead sponsor of 1,396 studies on the registry; 199 are open to participants now.

Of its 102 completed or terminated interventional studies of FDA-regulated products, 73 (72%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 85 Years
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  • Two or more days with core temperature ≥ 100.4F
  • Approval of the patient's primary attending physician
  • Need for core temperature measurement independent of the study.
  • Admission to the Neuro-ICU [intensive care unit] for an underlying condition

Exclusion criteria

Exclusion Criteria:

  • Evidence for an infectious cause of fever, such as pneumonia, bacteremia, CNS [central nervous system] infection or urinary tract infection.
  • Expected death from any cause
  • Known sensitivity to the device
  • History of pre-admission hypothalamic dysfunction or known temperature dysregulation
  • Use of 2 or more vasopressor medications, since this may make a local skin reaction to the device more likely
  • Hemodynamic instability
05

Study design

Phase
Phase 4
Primary purpose
Treatment
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
20 participants (actual)

Study arms

  • Experimental
    A

    Application of the Gaymar Rapr-Round device per approved use

    Device: Gaymar Rapr-Round (external cooling blanket)

Interventions

  • DeviceGaymar Rapr-Round (external cooling blanket)

    Application of the device per its approved labeling

06

What researchers measure

Primary outcomes

  1. Core Temperature as Measured With an Approved Device (Urinary Catheter) in Place for Usual Clinical Care

    Core temperature (in degrees Fahrenheit, F) throughout the study period. The cooling blanket was in place throughout the study period unless severe shivering led to termination per protocol.

    Time frame: baseline, one, two and six hours after application.

Secondary outcomes

  1. Time From Start of Cooling Device to Core Temperature < 100.4F

    For all patients, the time until the core temperature (measured with a urinary catheter in place for usual clinical care) was \<100.4F

    Time frame: Six hours

  2. Number of Participants With Severe Shivering

    Severe shivering as measured by the bedside shivering assessment scale: 0 None: no shivering noted on palpation of the masseter, neck, or chest wall 1. Mild: shivering localized to the neck and/or thorax only 2. Moderate: shivering involves gross movement of the upper extremities (in addition to neck and thorax) 3. Severe: shivering involves gross movements of the trunk and upper and lower extremities

    Time frame: six hours

  3. Number of Participants With Hypotension

    New systolic blood pressure \< 100 mm Hg, or new vasopressor use during study period

    Time frame: six hours

  4. Number of Participants With Arrhythmia

    New ventricular tachycardia, ventricular fibrillation, atrial fibrillation or other unstable cardiac rhythm

    Time frame: Six hours

07

Results

Posted Apr 9, 2012

Participant flow

Participant flow — Overall Study
MilestoneTreatment Group
Started20
Completed20
Not completed0

Outcome measures

PrimaryCore Temperature as Measured With an Approved Device (Urinary Catheter) in Place for Usual Clinical Care

Core temperature (in degrees Fahrenheit, F) throughout the study period. The cooling blanket was in place throughout the study period unless severe shivering led to termination per protocol.

Time frame:
baseline, one, two and six hours after application.
Reported as:
Mean · degrees F
Core Temperature as Measured With an Approved Device (Urinary Catheter) in Place for Usual Clinical Care
degrees FTreatment Group at 0, 1, 2, 6 Hours
0 hours100.8 ± 0.4
1 hour100.3 ± 0.9
2 hours99.9 ± 1.1
6 hours99.5 ± 0.7
SecondaryTime From Start of Cooling Device to Core Temperature < 100.4F

For all patients, the time until the core temperature (measured with a urinary catheter in place for usual clinical care) was \<100.4F

Time frame:
Six hours
Reported as:
Mean · hours
Time From Start of Cooling Device to Core Temperature < 100.4F
hoursTreatment Group
Time From Start of Cooling Device to Core Temperature < 100.4F2.1 ± 1.6
SecondaryNumber of Participants With Severe Shivering

Severe shivering as measured by the bedside shivering assessment scale: 0 None: no shivering noted on palpation of the masseter, neck, or chest wall 1. Mild: shivering localized to the neck and/or thorax only 2. Moderate: shivering involves gross movement of the upper extremities (in addition to neck and thorax) 3. Severe: shivering involves gross movements of the trunk and upper and lower extremities

Time frame:
six hours
Reported as:
Number · participants
Number of Participants With Severe Shivering
participantsTreatment Group
Number of Participants With Severe Shivering4
SecondaryNumber of Participants With Hypotension

New systolic blood pressure \< 100 mm Hg, or new vasopressor use during study period

Time frame:
six hours
Reported as:
Number · participants
Number of Participants With Hypotension
participantsTreatment Group
Number of Participants With Hypotension0
SecondaryNumber of Participants With Arrhythmia

New ventricular tachycardia, ventricular fibrillation, atrial fibrillation or other unstable cardiac rhythm

Time frame:
Six hours
Reported as:
Number · participants
Number of Participants With Arrhythmia
participantsTreatment Group
Number of Participants With Arrhythmia0

Adverse events

Non-serious events are listed at a 5% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
Treatment Group—4/20 (20%)0/20 (0%)
Most frequent serious events
Most frequent serious events
EventTreatment Group
ShiveringNervous system disorders4/20

Baseline characteristics

Age Continuous
Age Continuous(years)Treatment Group
Mean54.3 ± 15.4
Sex: Female, Male
Sex: Female, Male(Participants)Treatment Group
Female7
Male13
Region of Enrollment
Region of Enrollment(participants)Treatment Group
United States20
08

Study locations

1 site
  • Northwestern Memorial Hospital
    Chicago, Illinois 60611, United States
09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on May 6, 2013, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT00751634
Lead sponsor
Northwestern University
Collaborators
Gaymar Industries, Inc.
Responsible party
Andrew Naidech (Associate Professor, Northwestern University) — Principal investigator
First posted
Sep 12, 2008
Start date
Jan 2009
Primary completion
Jan 2011
Completion
Jan 2011
Results posted
Apr 9, 2012
Last update
May 6, 2013

Study contacts

Andrew M Naidech, MD MSPH
principal investigator · Northwestern University

Oversight

Data monitoring committee
No
View the source record on ClinicalTrials.gov ↗

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