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CompletedNCT00391469Updated Dec 2, 2014Results posted

Induction of Mild Hypothermia Following Out-of-hospital Cardiac Arrest

A Phase 2/3 interventional study of Rapid infusion of 2 liters of 4oC normal saline and Rapid infusion of cold normal saline in Out-of-hospital Cardiac Arrest, sponsored by University of Washington. Completed at 1 site in United States. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2014-12-02.

Sponsored by University of Washington · Phase 2/3, Interventional, and Treatment

Phase
Phase 2/3
Study type
Interventional
Enrollment
1,359
Allocation
Randomized
Ages
18 Years and older
Sex
All
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Study summary

The overall goal of this study is to determine whether initiating hypothermia in cardiac arrest patients as soon as possible in the field results in a greater proportion of patients who survive to hospital discharge compared to standard prehospital/field care.

Read the detailed description

In this study we will randomize 1,200 cardiac arrest patients who have return of spontaneous circulation (ROSC) to hypothermia with rapid infusion of 2 liters of 4oC Normal Saline IV solution over 20 to 30 minutes, IV sedation and muscle paralysis or to standard of care following ROSC.

The primary objective of this study will be to determine whether induction of mild hypothermia using an infusion of cold normal saline will improve the proportion of patients who survive and are discharged awake from the hospital.

Hypothesis: In cardiac arrest patients who achieve ROSC in the field, initiation of hypothermia by infusion of cold normal saline will result in a greater proportion of cardiac arrest patients discharged awake from the hospital compared to standard care.

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Conditions studied

  • Out-of-hospital Cardiac Arrest

Keywords

  • cardiac arrest
  • mild hypothermia
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In context

Heart Arrest

966 studies on the registry are indexed under Heart Arrest; 227 are open to participants now.

This study's enrollment of 1,359 is above the median of 100 across 557 interventional studies indexed under Heart Arrest.

Browse Heart Arrest studies →

Lead sponsor

University of Washington is the lead sponsor of 1,397 studies on the registry; 225 are open to participants now.

Of its 154 completed or terminated interventional studies of FDA-regulated products, 132 (86%) have results posted.

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

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Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  • successful resuscitation from out-of-hospital cardiac arrest by paramedics, defined by having a palpable pulse

Exclusion criteria

Exclusion Criteria:

  • traumatic cause for cardiac arrest
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Study design

Phase
Phase 2 / Phase 3
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Single group
Masking
None (open label)
Enrollment
1,359 participants (actual)

Study arms

  • No intervention
    control treatment

    Other: Rapid infusion of 2 liters of 4oC normal saline · Drug: Rapid infusion of cold normal saline

Interventions

  • OtherRapid infusion of 2 liters of 4oC normal saline

    Patients randomized to mild hypothermia will receive a rapid infusion of 2 liters of 4oC normal saline prior to arrival in the emergency room. Patients randomized to control will receive standard of care following resuscitation from cardiac arrest.

    Also known as: Rapid infusion of cold normal saline

  • DrugRapid infusion of cold normal saline
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What researchers measure

Primary outcomes

  1. Number Alive at Hospital Discharge

    Time frame: at hospital discharge

Secondary outcomes

  1. Neurologic Status at Discharge-full Recovery

    Time frame: at time of discharge

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Results

Posted Dec 2, 2014

Participant flow

Participant flow — Overall Study
MilestoneInterventionControl
Started688671
Completed688671
Not completed00

Outcome measures

PrimaryNumber Alive at Hospital Discharge
Time frame:
at hospital discharge
Reported as:
Number · participants
Number Alive at Hospital Discharge
participantsVF-randomized to Standard TreatmentVF-randomized to HypothermiaNon-VF Randomized to Standard TreatmentNon-VF-randomized to Hypothermia
Number Alive at Hospital Discharge1871836276
SecondaryNeurologic Status at Discharge-full Recovery
Time frame:
at time of discharge
Reported as:
Number · participants
Neurologic Status at Discharge-full Recovery
participantsVF-randomized to Standard TreatmentVF-randomized to HypothermiaNon-VF Randomized to Standard TreatmentNon-VF-randomized to Hypothermia
Neurologic Status at Discharge-full Recovery1451253436

Adverse events

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

Adverse event summary by group
GroupDeathsSeriousOther
Intervention-hypo—547/688 (79.5%)0/688 (0%)
Control-standard Care—513/671 (76.5%)0/671 (0%)
Most frequent serious events
Most frequent serious events
EventIntervention-hypoControl-standard Care
pulmonary edema on first chest X-rayCardiac disorders256/631184/609
Re-arrest postrandomizationCardiac disorders176/686138/671
use of diuretics first 12 hCardiac disorders119/67481/648
death in emergency dept.Cardiac disorders88/68885/671
Use of pressers post randomizationCardiac disorders62/68659/671
prehospital deathsCardiac disorders9/68811/671

Baseline characteristics

Age, Continuous
Age, Continuous(years)VF-randomized to Standard TreatmentVF-randomized to HypothermiaNon-VF Randomized to Standard TreatmentNon-VF-randomized to HypothermiaTotal
Mean62.1 ± 15.662.1 ± 14.267.5 ± 16.568.3 ± 16.365.1 ± 15.3
Sex: Female, Male
Sex: Female, Male(Participants)VF-randomized to Standard TreatmentVF-randomized to HypothermiaNon-VF Randomized to Standard TreatmentNon-VF-randomized to HypothermiaTotal
Female7465175180494
Male217227205216865
Region of Enrollment
Region of Enrollment(participants)VF-randomized to Standard TreatmentVF-randomized to HypothermiaNon-VF Randomized to Standard TreatmentNon-VF-randomized to HypothermiaTotal
United States2912923803961359
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Study locations

1 site
  • Harborview Medical Center
    Seattle, Washington 98104, United States
09

References and documents

Publications

  • Maynard C, Longstreth WT Jr, Nichol G, Hallstrom A, Kudenchuk PJ, Rea T, Copass MK, Carlbom D, Deem S, Olsufka M, Cobb LA, Kim F. Effect of prehospital induction of mild hypothermia on 3-month neurological status and 1-year survival among adults with cardiac arrest: long-term follow-up of a randomized, clinical trial. J Am Heart Assoc. 2015 Mar 11;4(3):e001693. doi: 10.1161/JAHA.114.001693. PubMed 25762805 ↗
  • Kim F, Nichol G, Maynard C, Hallstrom A, Kudenchuk PJ, Rea T, Copass MK, Carlbom D, Deem S, Longstreth WT Jr, Olsufka M, Cobb LA. Effect of prehospital induction of mild hypothermia on survival and neurological status among adults with cardiac arrest: a randomized clinical trial. JAMA. 2014 Jan 1;311(1):45-52. doi: 10.1001/jama.2013.282173. PubMed 24240712 ↗
  • Ferreira Da Silva IR, Frontera JA. Targeted temperature management in survivors of cardiac arrest. Cardiol Clin. 2013 Nov;31(4):637-55, ix. doi: 10.1016/j.ccl.2013.07.010. PubMed 24188226 ↗
  • Soar J, Nolan JP. Mild hypothermia for post cardiac arrest syndrome. BMJ. 2007 Sep 8;335(7618):459-60. doi: 10.1136/bmj.39315.519201.BE. PubMed 17823147 ↗
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Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Dec 2, 2014, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
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Registry details

Key details

Study ID
NCT00391469
Lead sponsor
University of Washington
Collaborators
Medic One Foundation, National Heart, Lung, and Blood Institute (NHLBI)
Responsible party
Francis Kim (Study Principal Investigator, University of Washington) — Principal investigator
First posted
Oct 24, 2006
Start date
Dec 2007
Primary completion
May 2013
Completion
Aug 2013
Results posted
Dec 2, 2014
Last update
Dec 2, 2014

Study contacts

Francis Kim, MD
principal investigator · University of Washington
Leonard Cobb, MD
study director · University of Washington

Oversight

Data monitoring committee
Yes
View the source record on ClinicalTrials.gov ↗

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This study is completed, as verified in Nov 2014. You cannot join it, but the record below documents what was studied.

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