Scientific papers 2007 - 2008
Ksenya Katsenelson, Yehuda Arieli, Amir Abramovich,
Moshe Feinsod, Ran Arieli.
The authors hypothesized that the number of bubbles
evolving during decompression from a dive, and therefore
the incidence of decompression sickness (DCS), might be
reduced by pretreatment with hyperbaric oxygen (HBO).
The inert gas in the gas micronuclei would be replaced by
oxygen, which would subsequently be consumed by the
mitochondria. To investigate whether their hypothesis
holds for mammals, the authors pretreated rats with HBO
at 304, 405, or 507 kPa for 20 min, after which they were
exposed to air at 1,013 kPa for 33 min and decompressed
at 202 kPa/min.
Authors: Jean-Eric Blatteau, Alain Boussuges, Emmanuel
Gempp, Jean-Michel Pontier, Olivier Castagna, Claude
Robinet, Francois-Michel Galland, Lionel Bourdon.
Sixteen trained military divers, aged 27–39 years, were
compressed in a hyperbaric chamber to 400 kPa for 30
min and decompressed at a rate of 100 kPa/min with a 9
min stop at 130 kPa (French Navy MN90 procedure).
Each diver performed two dives three days apart, one
without exercise and one with exercise before the dive. All
participants performed a 40 min constant-load
submaximal and calibrated exercise, which consisted of
outdoor running two h before the dive. Circulating
bubbles were detected with a precordial doppler at 30,
60, and 90 min after surfacing. Haemodynamic changes
were evaluated with doppler echocardiography.
Authors: E Gempp, J E Blatteau, J-M Pontier, C Balestra, &
To investigate whether pre-hydration 90 minutes before a
dive could decrease bubble formation and evaluate the
consequent adjustments in plasma volume (PV), water
balance, and plasma surface tension (ST), eight military
divers participated in a crossover trial of pre-dive hydration
using saline–glucose beverage, and a controlled dive with
no pre-hydration. Drink volume was 1300 ml and drinking
time was 50–60 min. The diving protocol consisted of an
open sea field air dive at 30 msw depth for 30 min
followed by a 9 min stop at three msw. Haemodynamic
parameters, body weight measurements, urine volume,
and blood samples were taken before/after fluid intake
and after the dive. Decompression bubbles were
examined by a precordial pulsed Doppler.
The documents are classified chronologically from 2007 to 2008.
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