Evaluating the risk of decompression sickness for a yo-yo dive using a rat model.
Undersea Hyperb Med
; 43(4): 405-410, 2016.
Article
de En
| MEDLINE
| ID: mdl-28763169
ABSTRACT
PURPOSE:
The frequent ascents made during yo-yo diving may contribute to gas bubble clearance but paradoxically may also increase the risk of central nervous system decompression illness (DCI). We evaluated the risk of DCI due to yo-yo dives with very short surface intervals, using a controlled animal model.METHODS:
Dives were conducted on air to a depth of 90 meters (10 atmospheres absolute) for 32 minutes of bottom time, at a descent/ascent rate of 10 meters/ minute. Sprague-Dawley rats weighing ~ 300 grams were divided randomly into three groups. Group A performed a square dive protocol without any surface intervals, Group B conducted a protocol that included two surface intervals during the dive, and Group C performed a protocol with three surface intervals. Ascent/descent rate for surface intervals, each lasting one minute, was also 10 meters/minute.RESULTS:
Manifestations of DCI were observed in 13 of 16 animals in Group A (81.3%), six of 12 in Group B (58.3%), and two of 12 in Group C (16.7%). Mortality rates were similar in all groups.CONCLUSIONS:
Surface intervals during dives breathing air significantly reduced DCI risk in the rat. Further studies are required using a larger animal model to reinforce the results of the present investigation.Mots clés
Recherche sur Google
Collection:
01-internacional
Base de données:
MEDLINE
Sujet principal:
Modèles animaux
/
Mal de décompression
/
Plongée
Type d'étude:
Etiology_studies
/
Prognostic_studies
/
Risk_factors_studies
Limites:
Animals
Langue:
En
Journal:
Undersea Hyperb Med
Sujet du journal:
FISIOLOGIA
Année:
2016
Type de document:
Article
Pays d'affiliation:
Israël