Automated Real-time Feedback on CPR Study

Study Results

Results available

Outcome measurements, participant flow, baseline characteristics, and adverse events have been published for this study.

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Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

PHASE2

Total Enrollment

1586 participants

Study Classification

INTERVENTIONAL

Study Start Date

2007-02-28

Study Completion Date

2009-09-30

Brief Summary

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The purpose of this study is to evaluate whether or not real-time feedback on CPR process variables will increase rates of restoration of spontaneous circulation during prehospital resuscitation and upon arrival at the receiving emergency room as well as increase rates of survival to hospital discharge.

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Detailed Description

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A subset of emergency medical services (EMS) agencies that are participating in the Resuscitation Outcomes Consortium (ROC) are adopting new monitor/defibrillators that are capable of monitoring CPR process during attempted resuscitation of patients in cardiac arrest, as well as providing automated real-time feedback about this process to EMS providers so as to improve compliance with recommended guidelines for CPR. Monitoring of CPR process during attempted resuscitation is an important step towards reducing the potential for poorly-performed CPR to modify the effect of the study interventions upon outcome. Clusters formed of rigs, an individual agency or groups of agencies were randomized to turn feedback on or off. After a fixed period of time, each cluster crossed over to the other arm. An unequal number of subjects were enrolled during each period.

Conditions

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Heart Arrest

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

CROSSOVER

Primary Study Purpose

TREATMENT

Blinding Strategy

NONE

Study Groups

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Feedback On

Automated real-time feedback on CPR Process activated

Group Type ACTIVE_COMPARATOR

Laerdal Q-CPR /technology

Intervention Type OTHER

For the first three to six months, participating EMS agencies will have defibrillators with automated, real-time feedback inactivated. During this period, the baseline rate of ROSC (and secondary outcomes) will be collected. At the end of this baseline period, EMS agencies will be randomized to one of two interventions, with randomization stratified within site by agency, station, or device. All clusters will cross-over to the opposite feedback strategy at least once during the intervention phase.

Feedback Off

For the first three to six months, participating EMS agencies will have defibrillators with automated, real-time feedback inactivated. During this period, the baseline rate of ROSC (and secondary outcomes) will be collected. At the end of this baseline period, EMS agencies will be randomized to one of two interventions, with randomization stratified within site by agency, station, or device. All clusters will cross-over to the opposite feedback strategy at least once during the intervention phase.

Group Type NO_INTERVENTION

No interventions assigned to this group

Interventions

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Laerdal Q-CPR /technology

For the first three to six months, participating EMS agencies will have defibrillators with automated, real-time feedback inactivated. During this period, the baseline rate of ROSC (and secondary outcomes) will be collected. At the end of this baseline period, EMS agencies will be randomized to one of two interventions, with randomization stratified within site by agency, station, or device. All clusters will cross-over to the opposite feedback strategy at least once during the intervention phase.

Intervention Type OTHER

Eligibility Criteria

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Inclusion Criteria

* all individuals who experience cardiac arrest outside the hospital,
* are evaluated by organized EMS personnel and: a) receive attempts at external defibrillation (by lay responders or emergency personnel) or receive chest compressions by organized EMS personnel.