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Circulation Improving Resuscitation Care (CIRC)

A Randomized Controlled Study Comparing Autopulse To Manual CPR In A CPR-First Protocol For Out-Of-Hospital Cardiac Arrest

Status
Completed
Phases
NA
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT00597207
Acronym
CIRC
Enrollment
4231
Registered
2008-01-17
Start date
2008-01-31
Completion date
2013-12-31
Last updated
2018-07-24

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Cardiac Arrest, Cardiopulmonary Resuscitation

Keywords

CPR, mechanical, manual, outcome, survival, quality

Brief summary

During resuscitation of out of hospital cardiac arrest patients the use of a mechanical chest compression device Autopulse will improve survival compared to manual compressions.

Detailed description

Sudden out-of-hospital cardiac arrest (OOH-CA) remains a significant cause of death, in spite of recent declines in overall mortality from cardiovascular disease. Several studies document sub optimal quality of manual chest compressions and this may influence outcome. However, studies comparing manual and mechanical chest compressions have resulted in conflicted results. The investigators think this may be based on methodology and design issues of the trials as much as not focusing on training and experience in operating a mechanical device clinically. Therefore the investigators will focus on these issues and implement three phases in the study (In field training, Run In phase, and Study phase). The investigators will also focus on early use of mechanical CPR after arrival at patient side and randomization at arrival. In order to achieve this the investigators will follow the Norwegian CPR Guidelines with 3 min CPR before defibrillation and the 3 min algorithm. Quality of CPR will be monitored.

Interventions

DEVICEAutoPulse

Mechanical device that provides chest compression

OTHERManual

Manual chest compression

Sponsors

Ullevaal University Hospital
CollaboratorOTHER
Zoll Medical Corporation
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
SINGLE (Outcomes Assessor)

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Patents aged 18 years (or local age of consent) or more who suffer non-traumatic arrest of presumed cardiac etiology in an out-of-hospital setting and who do not meet any of the

Exclusion criteria

below.

Design outcomes

Primary

MeasureTime frameDescription
Hospital DischargeFrom time of first contact until hospital discharge, up to 90 days.Whether a subject was discharged alive from the hospital or alternatively died prior to discharge.

Countries

Austria, Netherlands, United States

Participant flow

Participants by arm

ArmCount
iA-CPR
Integrated Mechanical CPR with AutoPulse All subjects initially receive manual chest compressions. After randomization, subjects randomized to iA-CPR are moved to the device once it is ready and from thereon receive mechanical chest compressions. AutoPulse: Mechanical device that provides chest compression
2,099
M-CPR
Manual CPR All subjects initially receive manual chest compressions. After randomization, subjects randomized to M-CPR continue to receive manual chest compressions. Manual: Manual chest compression
2,132
Total4,231

Withdrawals & dropouts

PeriodReasonFG000FG001
Overall StudyLost to Follow-up57

Baseline characteristics

CharacteristiciA-CPRM-CPRTotal
Age, Customized
18-59 years
706 participants734 participants1440 participants
Age, Customized
60-74 years
671 participants689 participants1360 participants
Age, Customized
75+ years
722 participants709 participants1431 participants
Sex: Female, Male
Female
784 Participants837 Participants1621 Participants
Sex: Female, Male
Male
1315 Participants1295 Participants2610 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
— / —— / —
other
Total, other adverse events
242 / 2,099225 / 2,132
serious
Total, serious adverse events
11 / 2,0991 / 2,132

Outcome results

Primary

Hospital Discharge

Whether a subject was discharged alive from the hospital or alternatively died prior to discharge.

Time frame: From time of first contact until hospital discharge, up to 90 days.

ArmMeasureValue (NUMBER)
iA-CPRHospital Discharge196 participants
M-CPRHospital Discharge233 participants

Source: ClinicalTrials.gov · Data processed: Mar 4, 2026