Experts differentiate between distress and drowning. 4, it may be classified into three types: drowning with death, drowning with ongoing health problems, and drowning with no ongoing health problems. "Wilderness Medical Society Practice Guidelines for the Prevention and Treatment of Drowning". J.; Bennett,.; Bhalla,.; Bikbov,.; Bin Abdulhak,.; Birbeck,.; Blyth,.; Bolliger,.; Boufous,.; Bucello,.;. A b c d Harle, Lindsey (August 2012). Approximately 90 of drownings take place in freshwater (rivers, lakes and swimming pools ) and 10 in seawater. 43 Drowning would be considered as a possible cause of death when the body was recovered from a body of water, or in close proximity to a fluid which could plausibly have caused drowning, or when found with the head immersed in a fluid. Archived from the original on Retrieved Gulli, Benjamin; Ciatolla, Joseph.; Barnes, Leaugeay (2011). Bull World Health Organ. Positive end-expiratory pressure will generally improve oxygenation. In Auerbach's Wilderness Medicine 7th edition. The person is turned on their back with a secure grip used to tow from behind. BMJ (Clinical Research.). Archived from the original on Retrieved 25 August 1 maint: BOT: original-url status unknown ( link ) van Beek, EF (2005). Te Ara: The Encyclopedia of New Zealand.