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Clinical Trial Details — Status: Active, not recruiting

Administrative data

NCT number NCT03894059
Other study ID # CRRF 1298
Secondary ID
Status Active, not recruiting
Phase
First received
Last updated
Start date December 14, 2020
Est. completion date December 31, 2025

Study information

Verified date April 2024
Source Ottawa Hospital Research Institute
Contact n/a
Is FDA regulated No
Health authority
Study type Observational

Clinical Trial Summary

Cardiac arrest is the number one cause of death in Canada. It is often the first symptom of cardiac disease for the victims. Eighty-five percent of victims collapse in their own home. Fifty percent collapse in the presence of a family member. Bystander cardiopulmonary resuscitation (CPR) can improve the chance to survive a cardiac arrest by three to four times, but needs to be started quickly. In most communities, less than 30% of victims receive CPR before the ambulance arrives. Currently, only 8% of cardiac arrest victims can leave the hospital alive. Many things have been tried to improve the number of times people do CPR. So far, the only thing that really increased the number of times that someone did CPR is when 9-1-1 attendants started to give CPR instructions to callers over the phone. The only problem is that about 25% of cardiac arrest victims gasp for air in the first few minutes. This can fool the 9-1-1 callers and attendants into thinking that the victim is still alive. The investigators have looked at all the studies on how to help 9-1-1 attendants to recognize abnormal breathing over the phone. The investigators have also learned what should be taught after finishing a large survey with 9-1-1 attendants from across Canada. This survey was done with the help of psychologists and other education experts. It measured the impact of attitudes, social pressures, and 9-1-1 attendants' perceived control over their ability to recognize abnormal breathing and cardiac arrest. Then the investigators developed a teaching tool which helped Ottawa 9-1-1 attendants recognize abnormal breathing. When they could do that, they could also recognize more cardiac arrest. The main goal of this project is to use the tool developed in Ottawa in more centres to help 9-1-1 attendants save the lives of even more cardiac arrest victims across Canada.


Recruitment information / eligibility

Status Active, not recruiting
Enrollment 12224
Est. completion date December 31, 2025
Est. primary completion date December 31, 2025
Accepts healthy volunteers No
Gender All
Age group 16 Years and older
Eligibility Inclusion Criteria: We will enroll ALL patients with prehospital cardiac arrest (absence of a detectable pulse, unresponsiveness, and apnea): - That are of presumed cardiac origin; - That occur in the catchment area of our participating sites; and - For which resuscitation is attempted by a bystander and/or the emergency responders. Exclusion Criteria: - Cardiac arrest witnessed by paramedics after their arrival (no opportunity for bystander intervention); - Patients younger than 16 years of age (cardiac arrest usually respiratory and rare in this population); - Patients who are "obviously dead"; - Trauma victims, including hanging and burns; or - Patients with cardiac arrest clearly of other non-cardiac origin including drug overdose, carbon monoxide poisoning, drowning, exsanguination, electrocution, asphyxia, hypoxia related to respiratory disease, cerebrovascular accident and documented terminal illness.

Study Design


Intervention

Other:
Educational Intervention
Additional training provided to ambulance telecommunicators in participating sites to help increase recognition of agonal breathing in the presence of out-of-hospital cardiac arrest.

Locations

Country Name City State
Canada Emergency Medical Care Inc. Dartmouth Nova Scotia

Sponsors (8)

Lead Sponsor Collaborator
Ottawa Hospital Research Institute Alberta Health services, BC Emergency Health Services, Emergency Health Services Nova Scotia, Health PEI, Medacom Atlantic, Ontario Ministry of Health and Long Term Care, Providence Health Care, British Columbia

Country where clinical trial is conducted

Canada, 

Outcome

Type Measure Description Time frame Safety issue
Primary Overall Survival Accessing hospital medical records or coroner's reports, assess survival of cardiac arrest victim as being discharged alive from hospital. Change between 12 month period before and after delivery of additional education to ambulance telecommunicators
Secondary Community Bystander Cardiopulmonary Resuscitation Rate The first member of the emergency response team to arrive at the scene will document whether or not chest compressions have been initiated by someone prior to the arrival of the emergency team. Change between 12 month period before and after delivery of additional education to ambulance telecommunicators
Secondary Telecommunication-assisted CPR instructions rate By reviewing audio recordings, determine the cases where telecommunicator assistance led to delivery of chest compressions Change between 12 month period before and after delivery of additional education to ambulance telecommunicators
Secondary Presence of agonal breathing Document the presence or absence of agonal breathing through review of audio recording. Change between 12 month period before and after delivery of additional education to ambulance telecommunicators
Secondary Cardiac arrest recognition rate at time of event
Secondary Time intervals call receipt to recognition of cardiac arrest, time to CPR instructions initiated Change between 12 month period before and after delivery of additional education to ambulance telecommunicators
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