During a routine dive in the East Shetland Basin of the North Sea, the diving bell of the diving support vessel MS Wildrake became separated from its main lift wire at a depth of over 160 metres. The most frequent disabling injuries were asphyxia at 33%, arterial gas embolism at 29% and cardiac incidents at 26%. The final moments of a wingsuit flyer’s life were captured on video before she plunged 2,500 metres to her death in China. 68 were actively investigated by DAN, DAN was notified of 127 recreational scuba deaths during 2015. Salt water aspiration may be caused by regulator a leak, rough conditions on the surface, or residual water in the regulator after regulator recovery or buddy breathing. (2014) suggest that a significant percentage of deaths are associated with equipment failure (35%) or misuse (35%), while the diving fatalities workshop of 2012 found that equipment failure per se was uncommon. This was usually due to a problem with the inflator mechanism, but in some cases the BCD could not stay inflated. [3], in at least 9% of fatalities in the ANZ survey cited by Edmonds et al. [3], Salt water aspiration was a factor in 37% of cases in the Edmonds summary. 1% of divers attempting a rescue died as a result. the diver was asthmatic, and in at least 8% of the cases asthma contributed to the death. However, unplanned buddy separation may imply that the missing buddy has already run into trouble beyond their capacity to resolve. In particular, risk of death increases when the MDR is combined with a heart condition called long QT syndrome. When the fatality involves a person at work, the occupational health and safety authority may investigate, and investigators from the deceased's, insurance company and the dive operator and certification agency's insurance companies are likely to be involved. This dangerous practice is unfortunately promoted by some instructors as it expedites shallow water training and allows divers to learn to descend without fully learning the appropriate skills. Some divers may be unaware of the need to adjust weight to suit any change in equipment that may affect buoyancy. [3] In at least one case the survivor had to forcibly retrieve their primary demand valve from a buddy who was apparently unwilling or unable to share it after the secondary demand valve was rejected during an assisted ascent. This was sometimes due to defective or ill-fitting fins, but in most cases the cause was not apparent. Usually the MDR serves as a built-in safety feature of the body. Panic typically occurs when a susceptible diver is in a threatening and unfamiliar situation, such as running out of breathing gas, or loss of ability to control depth, and is commonly complicated by inappropriate response to the triggering situation, which generally makes the situation worse. Triggering events associated with asphyxia included: (40%) entrapment due to entanglement in kelp, wreckage, mooring lines, fishing lines or nets, and entrapment in confined spaces or under ice. On dives where decompression is planned, competent divers will often carry a bit more weight than strictly necessary to ensure that in a situation where they have lost or used up all their gas and are relying on a supply from a team member, they do not have to struggle to stay down at the correct stop depth. 3:36 . Diving deaths are relatively uncommon, and may be unfamiliar to the pathologist. 334 were actively investigated by DAN, DAN was notified of 146 recreational scuba deaths during 2014. In the ANZ study 33% of the fatalities either dived alone or voluntarily separated from their buddies before the incident, 25% separated after a problem developed and 20% were separated by the problem. In some fatalities the weights had been released but became entangled. 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