ResQ Trial: Impact of an ITD and Active Compression Decompression CPR on Survival From Out-of-Hospital Cardiac Arrest (ResQ)

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT00189423
Recruitment Status : Terminated (Terminated due to lack of funding. Follow-up completed for all enrolled subjects.)
First Posted : September 19, 2005
Results First Posted : August 22, 2012
Last Update Posted : December 8, 2017
National Heart, Lung, and Blood Institute (NHLBI)
Information provided by (Responsible Party):
Advanced Circulatory Systems

Study Type: Interventional
Study Design: Allocation: Randomized;   Intervention Model: Parallel Assignment;   Masking: Single (Investigator);   Primary Purpose: Treatment
Conditions: Heart Arrest
Death, Sudden, Cardiac
Cardiopulmonary Resuscitation
Cardiac Arrest
Interventions: Device: Use of an impedance threshold device (ITD) during the performance of active compression decompression CPR (ACD-CPR)
Procedure: Standard cardiopulmonary resuscitation (S-CPR)

  Participant Flow

Recruitment Details
Key information relevant to the recruitment process for the overall study, such as dates of the recruitment period and locations
The study was conducted under a waiver of informed consent for emergency research that was approved by the U.S. Food and Drug Administration and by the Institutional Review Boards at participating study sites. All adults with out-of-hospital cardiac arrest were eligible for the study.

Pre-Assignment Details
Significant events and approaches for the overall study following participant enrollment, but prior to group assignment
All sites were required to complete a run-in phase prior to to beginning randomization. A total of 2667 patients (197 run-in, 2470 pivotal) were provisionally enrolled and received randomized CPR treatment. Of these, 1653 pivotal patients met the final selection criteria (non-traumatic arrest due to cardiac cause).

Reporting Groups
Standard CPR Conventional standard cardiopulmonary resuscitation (S-CPR)
ACD CPR Plus ITD Active compression decompression CPR plus an Impedance Threshold Device

Participant Flow:   Overall Study
    Standard CPR   ACD CPR Plus ITD
STARTED   813   840 
COMPLETED   48   74 
NOT COMPLETED   765   766 
Death                746                747 
Withdrawal by Subject                9                9 
Lost to Follow-up                10                10 

  Baseline Characteristics

Population Description
Explanation of how the number of participants for analysis was determined. Includes whether analysis was per protocol, intention to treat, or another method. Also provides relevant details such as imputation technique, as appropriate.
No text entered.

Reporting Groups
Standard CPR Conventional standard cardiopulmonary resuscitation (S-CPR)
ACD CPR Plus ITD Active compression decompression CPR plus an Impedance Threshold Device
Total Total of all reporting groups

Baseline Measures
   Standard CPR   ACD CPR Plus ITD   Total 
Overall Participants Analyzed 
[Units: Participants]
 813   840   1653 
[Units: Participants]
Count of Participants
<=18 years      0   0.0%      1   0.1%      1   0.1% 
Between 18 and 65 years      377  46.4%      369  43.9%      746  45.1% 
>=65 years      436  53.6%      470  56.0%      906  54.8% 
[Units: Years]
Mean (Standard Deviation)
 66.8  (14.5)   67.0  (15.2)   66.9  (14.9) 
Sex: Female, Male 
[Units: Participants]
Count of Participants
Female      274  33.7%      282  33.6%      556  33.6% 
Male      539  66.3%      558  66.4%      1097  66.4% 
Region of Enrollment 
[Units: Participants]
United States   813   840   1653 

  Outcome Measures

1.  Primary:   Number of Patients Who Survived to Hospital Discharge With Favorable Neurologic Function Defined as MRS Score <=3   [ Time Frame: When the subject is discharged from the hospital; an average of 12 days after cardiac arrest for subjects surviving to hospital discharge ]

2.  Secondary:   Major Adverse Event Rate as Measured by Number of Patients With One or More Adverse Events   [ Time Frame: Time from cardiac arrest through hospital discharge (an average of 12 days for subjects surviving to hospital discharge ]

3.  Secondary:   Return of Spontaneous Circulation (ROSC)   [ Time Frame: Time of cardiac arrest until discontinuation of efforts ]

4.  Secondary:   Survival to Hospital (e.g., Intensive Care Unit) Admission   [ Time Frame: Time of hospital admission, up to 1 day after cardiac arrest ]

5.  Secondary:   Survival to 24 Hours   [ Time Frame: 24 hours following cardiac arrest ]

6.  Secondary:   Survival to Hospital Discharge   [ Time Frame: cardiac arrest to hospital discharge ]

7.  Secondary:   Survival to 90 Days   [ Time Frame: 90 days following cardiac arrest ]

8.  Secondary:   Survival to 365 Days   [ Time Frame: 365 days following cardiac arrest ]

9.  Secondary:   Neurological Recovery at 1 Year [Measured by Cognitive Abilities Screening Instrument (CASI)]   [ Time Frame: One year after index arrest ]

  Serious Adverse Events

  Other Adverse Events

  Limitations and Caveats

Limitations of the study, such as early termination leading to small numbers of participants analyzed and technical problems with measurement leading to unreliable or uninterpretable data
No text entered.

  More Information

Certain Agreements:  
Principal Investigators are NOT employed by the organization sponsoring the study.
There IS an agreement between Principal Investigators and the Sponsor (or its agents) that restricts the PI's rights to discuss or publish trial results after the trial is completed.
The agreement is:
unchecked The only disclosure restriction on the PI is that the sponsor can review results communications prior to public release and can embargo communications regarding trial results for a period that is less than or equal to 60 days. The sponsor cannot require changes to the communication and cannot extend the embargo.
unchecked Other disclosure agreement that restricts the right of the PI to discuss or publish trial results after the trial is completed.

Results Point of Contact:  
Name/Title: Director of Clinical Trials
Organization: Advanced Circulatory Systems, Inc.
phone: 651-403-5600

Publications of Results:
Other Publications:

Responsible Party: Advanced Circulatory Systems Identifier: NCT00189423     History of Changes
Obsolete Identifiers: NCT00225953
Other Study ID Numbers: 265
R44HL065851-03 ( U.S. NIH Grant/Contract )
2R44HL065851-03 ( U.S. NIH Grant/Contract )
First Submitted: September 12, 2005
First Posted: September 19, 2005
Results First Submitted: March 1, 2012
Results First Posted: August 22, 2012
Last Update Posted: December 8, 2017