Study Stopped
Terminated because preliminary data suggested no difference in the strategies.
Resuscitation Outcomes Consortium (ROC) Prehospital Resuscitation Using an Impedance Valve
2 other identifiers
interventional
11,738
2 countries
9
Brief Summary
The purpose of this study is to look at two different treatments during a cardiac arrest that occurs outside of the hospital and whether either or both treatments will increase the number of people who live to hospital discharge. A cardiac arrest is when the heart stops pumping blood to the body.
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at P75+ for phase_3
Started Jun 2007
Typical duration for phase_3
9 active sites
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
Click on a node to explore related trials.
Study Timeline
Key milestones and dates
First Submitted
Initial submission to the registry
October 30, 2006
CompletedFirst Posted
Study publicly available on registry
November 1, 2006
CompletedStudy Start
First participant enrolled
June 1, 2007
CompletedPrimary Completion
Last participant's last visit for primary outcome
November 1, 2009
CompletedStudy Completion
Last participant's last visit for all outcomes
July 1, 2010
CompletedResults Posted
Study results publicly available
April 18, 2012
CompletedAugust 9, 2018
July 1, 2018
2.4 years
October 30, 2006
March 23, 2012
July 12, 2018
Conditions
Keywords
Outcome Measures
Primary Outcomes (1)
Survival to Hospital Discharge With Satisfactory Function (Modified Rankin Scale [MRS] of Less Than or Equal to 3).
The modified Rankin Score (mRS) measures the ability of patients to function independently. The scale goes from 0 (no symptoms) to 6 (death). Subjects with a mRS scores of three or less (i.e. better) at the time of hospital discharge were considered to have a positive outcome, resulting in a binary measure.
Hospital discharge or death prior to discharge
Secondary Outcomes (4)
Survival to Hospital Discharge
Survival to hospital discharge or death before discharge
Modified Rankin Score at 6 Months After Hospital Discharge
6 months post hospital discharge
Adult Lifestyle and Function Version of Mini-Mental Status Exam at 6 Months
6 months post hospital discharge
Health Utilities Index III Score and Geriatric Depression Scale Score 6 Months
6 months post hospital discharge
Study Arms (4)
1
EXPERIMENTALUse of Impedance Threshold Device (ITD)
2
SHAM COMPARATORSham ITD
3
OTHERAnalyze early. Upon EMS (emergency medical services) arrival at the scene of a non-traumatic cardiac arrest, the EMS providers assess the cardiac rhythm as soon as possible. Approximately thirty seconds of CPR (cardiopulmonary resuscitation) may be done prior to an assessment of the cardiac rhythm to determine whether a defibrillatory shock is required.
4
OTHERAnalyze late. Upon the EMS arrival at the scene of a non-traumatic cardiac arrest, three minutes of CPR is done prior to the assessment of the cardiac rhythm to determine whether a defibrillatory shock is required.
Interventions
Upon EMS arrival at the scene of a non-traumatic cardiac arrest, an assessment of the cardiac rhythm is done to determine whether a defibrillatory shock is required.
Upon EMS arrival at the scene of a non-traumatic cardiac arrest, three minutes of CPR is given prior to the assessment of the cardiac rhythm to determine whether a defibrillatory shock is required.
Eligibility Criteria
You may not qualify if:
- Common:
- Do not attempt resuscitation (DNAR) orders
- Blunt, penetrating, or burn-related injury
- Patients with exsanguinations
- Known prisoners
- Known pregnancy
- Non-ROC EMS agency/provider
- For Analyzing Late versus Early
- EMS-witnessed arrests
- For ITD:
- Tracheostomy present
- CPR performed with the mechanical compression "Autopulse" device.
Contact the study team to confirm eligibility.
Sponsors & Collaborators
- University of Washingtonlead
- National Heart, Lung, and Blood Institute (NHLBI)collaborator
- National Institute of Neurological Disorders and Stroke (NINDS)collaborator
- Canadian Institutes of Health Research (CIHR)collaborator
- Defence Research and Development Canadacollaborator
- Heart and Stroke Foundation of Canadacollaborator
- American Heart Associationcollaborator
Study Sites (9)
Alabama Resuscitation Center
Birmingham, Alabama, 35294, United States
UCSD-San Diego Resuscitation Center
San Diego, California, 92103, United States
Portland Resuscitation Outcomes Consortium, Oregon Health & Sciences University
Portland, Oregon, 97239, United States
The Pittsburgh Resuscitation Network, University of Pittsburgh
Pittsburgh, Pennsylvania, 15213, United States
Dallas Center for Resuscitation Research, University of Texas Southwestern Medical Center
Dallas, Texas, 75390, United States
Seattle-King County Center for Resuscitation Research, University of Washington
Seattle, Washington, 98195, United States
Milwaukee Resuscitation Network, Medical College of Wisconsin
Milwaukee, Wisconsin, 53226, United States
University of Ottawa/University of British Columbia Collaborative RCC, Ottawa Health Research
Ottawa, Ontario, K1Y4E9, Canada
Toronto Regional Resuscitation Research Out-of-Hospital Network, University of Toronto
Toronto, Ontario, M5B1W8, Canada
Related Publications (8)
Aufderheide TP, Nichol G, Rea TD, Brown SP, Leroux BG, Pepe PE, Kudenchuk PJ, Christenson J, Daya MR, Dorian P, Callaway CW, Idris AH, Andrusiek D, Stephens SW, Hostler D, Davis DP, Dunford JV, Pirrallo RG, Stiell IG, Clement CM, Craig A, Van Ottingham L, Schmidt TA, Wang HE, Weisfeldt ML, Ornato JP, Sopko G; Resuscitation Outcomes Consortium (ROC) Investigators. A trial of an impedance threshold device in out-of-hospital cardiac arrest. N Engl J Med. 2011 Sep 1;365(9):798-806. doi: 10.1056/NEJMoa1010821.
PMID: 21879897BACKGROUNDStiell IG, Nichol G, Leroux BG, Rea TD, Ornato JP, Powell J, Christenson J, Callaway CW, Kudenchuk PJ, Aufderheide TP, Idris AH, Daya MR, Wang HE, Morrison LJ, Davis D, Andrusiek D, Stephens S, Cheskes S, Schmicker RH, Fowler R, Vaillancourt C, Hostler D, Zive D, Pirrallo RG, Vilke GM, Sopko G, Weisfeldt M; ROC Investigators. Early versus later rhythm analysis in patients with out-of-hospital cardiac arrest. N Engl J Med. 2011 Sep 1;365(9):787-97. doi: 10.1056/NEJMoa1010076.
PMID: 21879896RESULTKawano T, Grunau B, Scheuermeyer FX, Gibo K, Fordyce CB, Lin S, Stenstrom R, Schlamp R, Jenneson S, Christenson J. Intraosseous Vascular Access Is Associated With Lower Survival and Neurologic Recovery Among Patients With Out-of-Hospital Cardiac Arrest. Ann Emerg Med. 2018 May;71(5):588-596. doi: 10.1016/j.annemergmed.2017.11.015. Epub 2018 Jan 6.
PMID: 29310869DERIVEDHo ML, Gatien M, Vaillancourt C, Whitham V, Stiell IG. Utility of prehospital electrocardiogram characteristics as prognostic markers in out-of-hospital pulseless electrical activity arrests. Emerg Med J. 2018 Feb;35(2):89-95. doi: 10.1136/emermed-2017-206878. Epub 2017 Oct 21.
PMID: 29055890DERIVEDReynolds JC, Grunau BE, Rittenberger JC, Sawyer KN, Kurz MC, Callaway CW. Association Between Duration of Resuscitation and Favorable Outcome After Out-of-Hospital Cardiac Arrest: Implications for Prolonging or Terminating Resuscitation. Circulation. 2016 Dec 20;134(25):2084-2094. doi: 10.1161/CIRCULATIONAHA.116.023309. Epub 2016 Oct 19.
PMID: 27760796DERIVEDZheng R, Luo S, Liao J, Liu Z, Xu J, Zhan H, Liao X, Xiong Y, Idris A. Conversion to shockable rhythms is associated with better outcomes in out-of-hospital cardiac arrest patients with initial asystole but not in those with pulseless electrical activity. Resuscitation. 2016 Oct;107:88-93. doi: 10.1016/j.resuscitation.2016.08.008. Epub 2016 Aug 21.
PMID: 27554946DERIVEDIdris AH, Guffey D, Pepe PE, Brown SP, Brooks SC, Callaway CW, Christenson J, Davis DP, Daya MR, Gray R, Kudenchuk PJ, Larsen J, Lin S, Menegazzi JJ, Sheehan K, Sopko G, Stiell I, Nichol G, Aufderheide TP; Resuscitation Outcomes Consortium Investigators. Chest compression rates and survival following out-of-hospital cardiac arrest. Crit Care Med. 2015 Apr;43(4):840-8. doi: 10.1097/CCM.0000000000000824.
PMID: 25565457DERIVEDStiell IG, Brown SP, Nichol G, Cheskes S, Vaillancourt C, Callaway CW, Morrison LJ, Christenson J, Aufderheide TP, Davis DP, Free C, Hostler D, Stouffer JA, Idris AH; Resuscitation Outcomes Consortium Investigators. What is the optimal chest compression depth during out-of-hospital cardiac arrest resuscitation of adult patients? Circulation. 2014 Nov 25;130(22):1962-70. doi: 10.1161/CIRCULATIONAHA.114.008671. Epub 2014 Sep 24.
PMID: 25252721DERIVED
Related Links
MeSH Terms
Conditions
Condition Hierarchy (Ancestors)
Results Point of Contact
- Title
- Siobhan Brown, PhD-Biostatistician
- Organization
- University of Washington
Study Officials
- STUDY CHAIR
Myron L Weisfeldt, MD
Johns Hopkins University
Publication Agreements
- PI is Sponsor Employee
- Yes
Study Design
- Study Type
- interventional
- Phase
- phase 3
- Allocation
- RANDOMIZED
- Masking
- TRIPLE
- Who Masked
- PARTICIPANT, CARE PROVIDER, INVESTIGATOR
- Purpose
- TREATMENT
- Intervention Model
- FACTORIAL
- Sponsor Type
- OTHER
- Responsible Party
- PRINCIPAL INVESTIGATOR
- PI Title
- Principal Investigator
Study Record Dates
First Submitted
October 30, 2006
First Posted
November 1, 2006
Study Start
June 1, 2007
Primary Completion
November 1, 2009
Study Completion
July 1, 2010
Last Updated
August 9, 2018
Results First Posted
April 18, 2012
Record last verified: 2018-07