A survey of caustic cocktail events in rebreather divers.
Diving Hyperb Med
; 52(2): 92-96, 2022 Jun 30.
Article
em En
| MEDLINE
| ID: mdl-35732280
ABSTRACT
INTRODUCTION:
Closed-circuit rebreathers (CCRs) are designed to be watertight. Ingressing water may react with carbon dioxide absorbent in the CCR, which may produce alkaline soda with a pH of 12-14, popularly referred to by CCR divers as a 'caustic cocktail'. This study aimed to explore divers' responses to caustic cocktail events and to investigate if CCR diving experience is associated with experiencing a caustic cocktail.METHODS:
An online survey instrument was developed and an invitation to participate was extended to certified CCR divers aged ≥ 18 years. Relationships between number of caustic cocktail events and potential risk factors age; hours of rebreather diving experience; and number of rebreather dives were explored.RESULTS:
Of the 413 respondents, 394 (95%) identified as male, mean age was 46 years and median length of CCR certification was six years. Fifty-seven percent (n = 237) of respondents reported having experienced a caustic cocktail. The probability of self-reporting none, one, or more caustic cocktail events increased with experience. Divers reported a variety of first aid treatments for caustic cocktails, with â¼80% citing their CCR instructor as a source of information.CONCLUSIONS:
The more hours or dives a CCR diver accrues, the more likely they will self-report having experienced one or more caustic cocktail events. The majority of CCR divers responded to a caustic cocktail by rinsing the oral cavity with water. A proportion of divers, however, responded by ingesting soda, dairy, juice, or a mildly acidic solution such as a mixture of vinegar and water. The recommendation to immediately flush with water needs reinforcing among rebreather divers.Palavras-chave
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Base de dados:
MEDLINE
Assunto principal:
Cáusticos
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Mergulho
Idioma:
En
Ano de publicação:
2022
Tipo de documento:
Article