Ontario Paramedic Practice Exam 2026 - Free Paramedic Practice Questions and Study Guide

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What is a common cause of airway obstruction in unconscious patients?

Tongue displacement

Tongue displacement is a prevalent cause of airway obstruction in unconscious patients due to the anatomical position of the tongue in relation to the oral cavity. When a person is unconscious, muscle tone is lost, and the tongue can fall back and obstruct the oropharynx, which can hinder the passage of air. This scenario is particularly common when the individual is supine, as gravity causes the relaxed tongue to move backward, effectively blocking the airway.

In emergency situations, recognizing the risk of tongue displacement is crucial for paramedics and first responders. Utilizing airway adjuncts, such as oropharyngeal or nasopharyngeal airways, can help keep the tongue in a position that maintains airway patency, allowing for sufficient ventilation until further medical intervention can be provided. Understanding this phenomenon is vital for effective airway management in unconscious patients.

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Choking on food

Swelling of the airway

Foreign body aspiration

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