Rebreather World - View Single Post - Training Improves Divers Ability to Detect Increased C02

JCdesign97 · 8th November 2007, 12:46

Quote: (Originally Posted by iain-hsm)

Results: The minimal mean inspired Pco2 that could be detected was 4.8 ± 1.6 kPa (36 ± 12 mm Hg) in UTS and 2.9 ± 0.7 kPa (22 ± 5 mm Hg) in TS (p < 0.0001).
There were 46 TS who were found to be CO2 retainers and 19 were classified as poor detectors.

Seven subjects exhibited both traits.
During actual oxygen diving performed later by this group, the only four cases of CNS-oxygen toxicity were among those seven subjects

Conclusions: that CO2 recognition training improves the diver’s capability to detect CO2. We suggest that a diver who is both a poor CO2 detector and a CO2 retainer will be prone to CNS-oxygen toxicity.

Stepping away from CO2 recognition for a moment (not to say that it isn't equally or more important) but Iain, is there any way for the unwashed masses of us to determine whether or not we are CO2 retainers? Short of joining the Israeli navy, of course ...

8th November 2007, 12:46	#10 (permalink)
JCdesign97 My unit can beat up yours Current Rebreather/s: Optima Other Rebreather/s: Join Date: Mar 2007 Location: PA, USA Posts: 385	Re: Training Improves Divers Ability to Detect Increased C02 Quote: (Originally Posted by iain-hsm) *Results:* The minimal mean inspired Pco2 that could be detected was 4.8 ± 1.6 kPa (36 ± 12 mm Hg) in UTS and 2.9 ± 0.7 kPa (22 ± 5 mm Hg) in TS (p < 0.0001). There were 46 TS who were found to be CO2 retainers and 19 were classified as poor detectors. Seven subjects exhibited both traits. During actual oxygen diving performed later by this group, the only four cases of CNS-oxygen toxicity were among those seven subjects *Conclusions:* that CO2 recognition training improves the diver’s capability to detect CO2. We suggest that a diver who is both a poor CO2 detector and a CO2 retainer will be prone to CNS-oxygen toxicity. Stepping away from CO2 recognition for a moment (not to say that it isn't equally or more important) but Iain, is there any way for the unwashed masses of us to determine whether or not we are CO2 retainers? Short of joining the Israeli navy, of course ... __________________ Cheers, John Cogan
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