An observational study in Choking, sponsored by University of Calgary. Recruiting at 1 site in Canada. Open to participants aged 3 Years and older. Per ClinicalTrials.gov, last updated 2026-09-11.
Sponsored by University of Calgary · Observational
Foreign body airway obstruction (FBAO, choking) is a life-threatening emergency requiring time-sensitive treatment to prevent severe injury or deaths. Traditional treatments taught in first aid courses include abdominal thrusts, back blows, and chest compressions or thrusts. Currently, first aid guidelines recommend different treatments for adults, child and infants. Until recently, data on these techniques was limited to case series from the late 1900's. To further improve our knowledge of which treatment is most effective and safest for patients, this study will collect data on choking incidents in Alberta, Canada. This study will focus on adults and children over the age of 2 years.
147 studies on the registry are indexed under Airway Obstruction; 25 are open to participants now.
This study's planned enrollment of 640 is above the median of 125 across 52 observational studies indexed under Airway Obstruction.
Browse Airway Obstruction studies →University of Calgary is the lead sponsor of 703 studies on the registry; 196 are open to participants now.
Of its 10 completed or terminated interventional studies of FDA-regulated products, 2 (20%) have results posted.
Counted across the registry records on this site, refreshed daily.
Adult or children (aged greater than 2 years) who experienced an out-of-hospital FBAO and received a FBAO intervention in Alberta, Canada, and, subsequently, were assessed by EMS or at an emergency department
Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.
Exclusion Criteria:
- Patients with abnormal airway anatomy such as a tracheostomy.
Abdominal thrust
Back blows
Chest thrusts on conscious individual
CPR on unconscious individual
LifeVac airway clearance device
Foreign body airway obstruction relief
Defined as: responders determining that the patient did not require further FBAO intervention due to improvement or resolution of their respiratory distress in a conscious patient, or the ability for a responder to successfully ventilate an unconscious patient when previously they were unable to due to obstruction
Time frame: Day 1
Survival to acute care discharge
Defined as discharge from the care of Emergency Medical Services(EMS) or paramedics, the emergency department, or the hospital.
Time frame: From date of enrolment until the date of acute care discharge or date of death from any cause, whichever came first, assessed up to 3 month
Survival to acute care discharge with favourable neurological outcome
Defined as no change in baseline neurological function (measured using the Cerebral Performance Category)
Time frame: From date of enrolment until the date of acute care discharge or date of death from any cause, whichever came first, assessed up to 3 months
Intervention-associated injuries
Listed summary of any injuries reported among patient recruited for study occurring as a result of the FBAO intervention as determined by the treating physician/care provider
Time frame: From date of enrolment until the date of acute care discharge or date of death from any cause, whichever came first, assessed up to 3 months
Plan to share: No
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