Airway patency and adequate respiratory effort are both essential for normal oxygenation and ventilation within the body so that normal physiological processes can proceed without metabolic derangement. This is even more important in patients with acute illness or injury, giving rise to increased metabolic demand. Accordingly, safe and effective airway management is a core skill for clinicians involved in prehospital emergency medical services (EMS).
— Read on www.ncbi.nlm.nih.gov/books/NBK557786/