Drowning is defined as the process of experiencing respiratory impairment from submersion or immersion in liquid.
Drowning is a leading cause of injury and death among young people.
It has been estimated that 80% to 90% of all drownings are preventable.
Hypoxemia is the primary cause of morbidity and mortality, and its reversal must remain the focus of treatment.
Drowning is the process of experiencing respiratory impairment from submersion or immersion in liquid.  This process is a continuum beginning with respiratory impairment as the victim's airway goes below the surface of the liquid (submersion) or when water splashes over the face (immersion). If the victim is rescued at any time, the process of drowning is interrupted, resulting in a nonfatal drowning. Any submersion or immersion incident without evidence of respiratory impairment (aspiration) should be considered a water rescue rather than a drowning. Terms such as "near-drowning," "dry or wet drowning," "active and passive drowning," "secondary," and "delayed onset of respiratory distress" should not be used.  
Diretor Médico da Sobrasa
Ten Cel BM Médico RR - Corpo de Bombeiros Militar do Rio de Janeiro
Defesa Civil Municipal do Rio de Janeiro
Membro Fundador - International Drowning Research Alliance - IDRA
Rio de Janeiro
DS is an author of several references cited in this topic.
Executive Director: Lifeguards Without Borders
Medical Director: International Surf Lifesaving Association
Medical Director: Starfish Aquatics Institute
Medical Director: Innovative Attraction Management Starguard Elite
Board of Directors: Safer 3 Water Safety Foundation
Staff: Global Outreach Doctors
JS has acted as a paid medical expert for cases related to emergency medicine and drowning. JS has accepted honoraria of up $1000 to speak at aquatics or EMS conferences on the topic of drowning resuscitation; however, he has engaged in no product endorsement and received no honoraria from device/pharma makers.
Department of Emergency Medicine
University of Florida College of Medicine - Jacksonville
Jacksonville Beach Ocean Rescue
Deputy Medical Director
AS declares that he has no competing interests.
Dr David Szpilman, Dr Justin Sempsrott, and Dr Andrew Schmidt would like to gratefully acknowledge Dr Bhakti K. Patel and Dr D. Kyle Hogarth, previous contributors to this topic. BKP and DKL declare that they have no competing interests.
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