Evidence-Based Steps to Save a Life During Choking Emergencies
Eating is a fundamental social activity, whether enjoying a family dinner or dining out with friends. However, amidst laughter and conversation, a sudden choking incident can turn a pleasant meal into a life-threatening emergency. Would you know how to respond effectively?
The Critical Importance of Bystander Action
Choking represents a medical emergency that demands immediate recognition and intervention to prevent rapid loss of consciousness, respiratory arrest, and potential death. Bystander actions frequently determine the outcome of choking incidents. Research indicates that when airway obstructions are not cleared before paramedics arrive, the risk of death increases by 42% compared to situations where bystanders successfully remove the blockage.
While choking can affect anyone, certain groups face higher risks, including individuals with neurological conditions affecting swallowing (such as dementia, stroke, or Parkinson's disease), those intoxicated by alcohol or medications, and young children who may ingest small objects.
Research Reveals Superior Technique
Until recently, limited high-quality evidence existed to guide bystanders on the most effective choking response methods. Techniques like abdominal thrusts (formerly known as the Heimlich maneuver), back blows, and chest compressions have been practiced since the mid-1900s, but recommendations primarily relied on case reports rather than rigorous scientific data.
A Canadian research collaboration involving physicians, paramedics, and academics investigated a large cohort of choking patients in Alberta, examining the effectiveness and safety of different techniques. Their findings revealed that back blows cleared obstructions in 72% of cases, significantly outperforming abdominal thrusts (59%) and chest thrusts (27%).
Survival rates to hospital discharge were highest among those who initially received back blows (97.8%), even after accounting for factors like patient age, sex, and obstruction type. Importantly, back blows caused no injuries, unlike abdominal thrusts and chest thrusts, which resulted in damage to lungs, heart, liver, and ribs.
Updated Guidelines Reflect New Evidence
For the first time since 2010, the American Heart Association (AHA) has updated its choking response guidelines. The Canadian study directly informed these critical changes, representing the only research directly comparing different choking techniques. Previously, abdominal thrusts were recommended primarily due to frequent case descriptions, despite known injury risks.
The updated guidelines now reflect the best available evidence, with the AHA closely collaborating with the Heart and Stroke Foundation of Canada, ensuring these changes will impact first aid training across North America.
Practical Response Protocol
If an adult or child can still cough, cry, or speak clearly, they can likely clear the obstruction themselves. Encourage them to lean forward while coughing forcefully.
When a person becomes quiet, cannot speak or cry, or exhibits weak coughing, begin with five strong back blows. With the person bent forward at the hips, deliver firm glancing blows between their shoulder blades using the heel of your hand.
If the obstruction persists, switch to abdominal thrusts. Continue alternating five back blows and five abdominal thrusts until the obstruction clears or the person becomes unconscious. Research indicates that between 11% and 49% of choking victims require multiple techniques for successful clearance.
Special Considerations and Emerging Technologies
Call emergency services early, either by directing another bystander or placing your phone on speaker if alone. For children, kneel to their height to deliver back blows and abdominal thrusts effectively.
For infants who cannot stand, hold them in your arms. If still crying or coughing loudly, support them with their head down. If they become quiet, begin with back blows followed by chest compressions, alternating until the obstruction clears.
If the person becomes unresponsive, assist them to the ground and begin CPR with chest compressions. During rescue breath attempts, check for visible objects in the mouth, removing only what is clearly visible.
Suction-based devices like LifeVac© have gained attention on social media platforms, creating negative pressure to remove obstructions. While early data shows promise with documented successful cases and few injuries, major resuscitation organizations like the AHA have yet to make conclusive recommendations, concerned that device use might delay other lifesaving techniques.
The Urgent Need for Public Education
Individuals trained in choking response can save lives in highly time-sensitive situations. Over the past two decades, simplified public CPR training has dramatically reduced cardiac arrest deaths. Choking response has not benefited from similar public education campaigns.
Given that immediate bystander response offers the best chance for survival, prioritizing mass public training in simple, evidence-based techniques like back blows could significantly improve choking survival rates. The authors of this research—Cody Dunne, Andrew McRae, and Khara Sauro from the University of Calgary—emphasize that knowing these evidence-based steps could mean the difference between life and death during choking emergencies.
