Trial Outcomes & Findings for Improving Cardiac Arrest Diagnostic Accuracy of Emergency Medical Dispatchers (NCT NCT01872325)
NCT ID: NCT01872325
Last Updated: 2021-03-17
Results Overview
By reviewing recordings of all cardiac arrest calls, including missed cases retrieved from a registry, document presence or absence of agonal breathing.
Recruitment status
COMPLETED
Target enrollment
1076 participants
Primary outcome timeframe
At the time of the cardiac arrest event
Results posted on
2021-03-17
Participant Flow
Participant milestones
| Measure |
Training Site
All emergency medical dispatchers at a central ambulance communication centre in Ontario will participate in an educational program designed to improve cardiac arrest diagnostic accuracy.
Education: An education program will be developed using behaviour change techniques specifically mapped to address modifiable factors identified in a previous study. These techniques will include: information about the significance of agonal breathing, modeling/demonstration of desired behavioural skills, rehearsal of desired skills, and monitoring/reinforcement and feedback.
|
Control Site
All emergency medical dispatchers at a central ambulance communications centre geographically remote from the Training Site and has a similar rate to the Training Site for cardiac arrests, bystander CPR rate, and survival
|
|---|---|---|
|
Overall Study
STARTED
|
689
|
387
|
|
Overall Study
COMPLETED
|
689
|
387
|
|
Overall Study
NOT COMPLETED
|
0
|
0
|
Reasons for withdrawal
Withdrawal data not reported
Baseline Characteristics
Race and Ethnicity were not collected from any participant.
Baseline characteristics by cohort
| Measure |
Training Site
n=689 Participants
All emergency medical dispatchers at a central ambulance communication centre in Ontario will participate in an educational program designed to improve cardiac arrest diagnostic accuracy.
Education: An education program will be developed using behaviour change techniques specifically mapped to address modifiable factors identified in a previous study. These techniques will include: information about the significance of agonal breathing, modeling/demonstration of desired behavioural skills, rehearsal of desired skills, and monitoring/reinforcement and feedback.
|
Control Site
n=387 Participants
All emergency medical dispatchers at a central ambulance communications centre geographically remote from the Training Site and has a similar rate to the Training Site for cardiac arrests, bystander CPR rate, and survival
|
Total
n=1076 Participants
Total of all reporting groups
|
|---|---|---|---|
|
Age, Continuous
|
68 years
n=689 Participants
|
68 years
n=387 Participants
|
68 years
n=1076 Participants
|
|
Sex: Female, Male
Female
|
217 Participants
n=689 Participants
|
136 Participants
n=387 Participants
|
353 Participants
n=1076 Participants
|
|
Sex: Female, Male
Male
|
472 Participants
n=689 Participants
|
251 Participants
n=387 Participants
|
723 Participants
n=1076 Participants
|
|
Race and Ethnicity Not Collected
|
—
|
—
|
0 Participants
Race and Ethnicity were not collected from any participant.
|
|
Region of Enrollment
Canada
|
689 participants
n=689 Participants
|
387 participants
n=387 Participants
|
1076 participants
n=1076 Participants
|
|
Witnessed Status
|
310 Participants
n=689 Participants
|
162 Participants
n=387 Participants
|
472 Participants
n=1076 Participants
|
|
Initial Cardiac Rhythm Ventricular Fibrillation/Ventricular Tachycardia
|
199 Participants
n=689 Participants
|
87 Participants
n=387 Participants
|
286 Participants
n=1076 Participants
|
PRIMARY outcome
Timeframe: At the time of the cardiac arrest eventBy reviewing recordings of all cardiac arrest calls, including missed cases retrieved from a registry, document presence or absence of agonal breathing.
Outcome measures
| Measure |
Training Site
n=689 Participants
All emergency medical dispatchers at a central ambulance communication centre in Ontario will participate in an educational program designed to improve cardiac arrest diagnostic accuracy.
Education: An education program will be developed using behaviour change techniques specifically mapped to address modifiable factors identified in a previous study. These techniques will include: information about the significance of agonal breathing, modeling/demonstration of desired behavioural skills, rehearsal of desired skills, and monitoring/reinforcement and feedback.
|
Control Site
n=387 Participants
All emergency medical dispatchers at a central ambulance communications centre geographically remote from the Training Site and has a similar rate to the Training Site for cardiac arrests, bystander CPR rate, and survival
|
|---|---|---|
|
Number of Participants With Agonal Breathing
|
176 Participants
|
87 Participants
|
SECONDARY outcome
Timeframe: At the time of the cardiac arrest eventBy reviewing recordings of all cardiac arrest calls, collect information on dispatcher recognition of cardiac arrest to bystander implementation of chest compressions
Outcome measures
| Measure |
Training Site
n=689 Participants
All emergency medical dispatchers at a central ambulance communication centre in Ontario will participate in an educational program designed to improve cardiac arrest diagnostic accuracy.
Education: An education program will be developed using behaviour change techniques specifically mapped to address modifiable factors identified in a previous study. These techniques will include: information about the significance of agonal breathing, modeling/demonstration of desired behavioural skills, rehearsal of desired skills, and monitoring/reinforcement and feedback.
|
Control Site
n=387 Participants
All emergency medical dispatchers at a central ambulance communications centre geographically remote from the Training Site and has a similar rate to the Training Site for cardiac arrests, bystander CPR rate, and survival
|
|---|---|---|
|
Number of Cases Where Cardiac Arrest Was Recognized by the Ambulance Dispatcher
|
495 Participants
|
287 Participants
|
OTHER_PRE_SPECIFIED outcome
Timeframe: At the time of the cardiac arrest eventThe first member of the emergency response team to arrive at scene will document whether or not chest compressions have been initiated by someone prior to the arrival of emergency team
Outcome measures
| Measure |
Training Site
n=689 Participants
All emergency medical dispatchers at a central ambulance communication centre in Ontario will participate in an educational program designed to improve cardiac arrest diagnostic accuracy.
Education: An education program will be developed using behaviour change techniques specifically mapped to address modifiable factors identified in a previous study. These techniques will include: information about the significance of agonal breathing, modeling/demonstration of desired behavioural skills, rehearsal of desired skills, and monitoring/reinforcement and feedback.
|
Control Site
n=387 Participants
All emergency medical dispatchers at a central ambulance communications centre geographically remote from the Training Site and has a similar rate to the Training Site for cardiac arrests, bystander CPR rate, and survival
|
|---|---|---|
|
Number of Participants Who Received Bystander CPR
|
247 Participants
|
153 Participants
|
OTHER_PRE_SPECIFIED outcome
Timeframe: At the time of the cardiac arrest event to discharge alive from hospital (varies, depending on length of hospital stay)Accessing hospital medical records or coroner's reports, assess survival of cardiac arrest victim as being discharged alive from hospital
Outcome measures
| Measure |
Training Site
n=689 Participants
All emergency medical dispatchers at a central ambulance communication centre in Ontario will participate in an educational program designed to improve cardiac arrest diagnostic accuracy.
Education: An education program will be developed using behaviour change techniques specifically mapped to address modifiable factors identified in a previous study. These techniques will include: information about the significance of agonal breathing, modeling/demonstration of desired behavioural skills, rehearsal of desired skills, and monitoring/reinforcement and feedback.
|
Control Site
n=387 Participants
All emergency medical dispatchers at a central ambulance communications centre geographically remote from the Training Site and has a similar rate to the Training Site for cardiac arrests, bystander CPR rate, and survival
|
|---|---|---|
|
Number of Participants Surviving to Hospital Discharge
|
86 Participants
|
27 Participants
|
Adverse Events
Training Site
Serious events: 0 serious events
Other events: 0 other events
Deaths: 0 deaths
Control Site
Serious events: 0 serious events
Other events: 0 other events
Deaths: 0 deaths
Serious adverse events
Adverse event data not reported
Other adverse events
Adverse event data not reported
Additional Information
Dr. Christian Vaillancourt
Ottawa Hospital Research Institute
Phone: 613-798-5555
Email: [email protected]
Results disclosure agreements
- Principal investigator is a sponsor employee
- Publication restrictions are in place