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Case series of unusual neurologic symptoms after scubadiving training sessions, in the context of SARS COV2preventive measures and restrictions
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Edité par CCSD -
International audience. In July 2020, 8 young divers presented neurological symptoms during the first level of military diving training (« ship diver »course) at the French military diving school . Onset of symptoms ranged from 5 to 50 hours after a yo yo diving only one yo yo)of 10 min (total duration) at a depth of 30 meters ascent rate of 15m/min, no deco stops). The origin of these symptoms raises thequestion of whether they can be related to decompression sickness . Indeed, while yo yo diving is identified as a risk factor for theoccurrence of DCIS, it is in fact very rare in the context of training diving with these diving parameters. In addition, the late onsetof symptoms after diving is highly unusual in the case of DCS. In order to understand the reasons for this cluster of neurologicalsymptoms, a full investigation was carried out by the epidemiology department , not limited to the DCS hypothesis.Objectives: Description of the cases & results of the epidemiological investigation. DISCUSSION/CONCLUSIONAfter eliminating other diagnoses and taking into account the clinical evolution under HBOT, we retain the hypothesis of DCS with a multifactorialorigin Corrective measures have been implemented including a return to the dive planning of previous courses, maintaining moderate aerobic activity prior to diving, strict hydration guidelines and limiting force work onehour after diving Since then, no cluster of neurological symptoms has recurred The incidence of DCS has normalized to the usual low values The possible impact of CO 2 retention due to the use of the COVID mask is not yetdetermined CO 2 could promote the formation of gas nuclei and be involved in the delayed latency of symptoms A programme of experimental animal and human studies is underway
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