I don't know if many of you have had a chance to read through the 150 + pages of expert testimony yet, but I just finished them. Since I've never dove a lake like this I had a question for those of you that might have.
Apparently Bear Lake has a high mineral content of especially white-colored calcium carbonate (lime) that affects the buoyancy characteristics of the water. Much like the Great Salt Lake, buoyancy rules would be different.
I would be interested in hearing from anyone who has dove in this lake or one like it?
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Pete said earlier the boy had on a 5mm wetsuit and expert testimony from court documents suggest he had on a 7mm farmer john. Anyone know which is true?
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From the expert testimony of witness accounts, the boy had achieved neutral buoyancy and overweighting was not a contributing factor to the incident. When found, the boy was suspended in a more vertical position. Does anyone have differing accounts?
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From the expert testimony, the scuba equipment was damaged during transport and storage.
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From the expert testimony, Although initially thought the boy drowned, he suffered from AGE
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If I have any of this information incorrect please elaborate.
I don't know if many of you have had a chance to read through the 150 + pages of expert testimony yet, but I just finished them. Since I've never dove a lake like this I had a question for those of you that might have.
Apparently Bear Lake has a high mineral content of especially white-colored calcium carbonate (lime) that affects the buoyancy characteristics of the water. Much like the Great Salt Lake, buoyancy rules would be different.
I would be interested in hearing from anyone who has dove in this lake or one like it?
---------------
Pete said earlier the boy had on a 5mm wetsuit and expert testimony from court documents suggest he had on a 7mm farmer john. Anyone know which is true?
--------------
From the expert testimony of witness accounts, the boy had achieved neutral buoyancy and overweighting was not a contributing factor to the incident. When found, the boy was suspended in a more vertical position. Does anyone have differing accounts?
-----------------
From the expert testimony, the scuba equipment was damaged during transport and storage.
------------------
From the expert testimony, Although initially thought the boy drowned, he suffered from AGE
------------------
If I have any of this information incorrect please elaborate.
Seriously- where should we start?
A) there is no negligible buoyancy difference it is a freshwater lake- nice try though... Numerous divers have commented on this before. They have posted exactly the opposite.
B) the expert you reference who claims the bcd worked (despite the on scene police report and police video saying otherwise) - I think I'll trust the cops-
seems you only care about the report of someone being paid to be the expert... That's really smart. Not.
C) it was a well-worn 5mm not a 7mm (see police report or clawed back padi incident report) but again nice try to again justify the 30+ pounds of lead on a 120 pound child.
D) the eye witness accounts were self contradictory but apparently you missed the best eye witness - the young boy who was his buddy - who specifically said:
1) he could not assist the boy because he was like a rock-
2) he was way to heavy to help to the surface... like pulling up a weighted anchor- and
3) the boy (who drowned) struggled to get to the surface but could not swim up....because HE WAS TOO HEAVY...
E) the police report says the boy was found ON THE BOTTOM- where do you get this "suspended" crap?!?!?
F) what are the contraindications for diving and for AGE susceptibility? Surprise! Asthma and pulmonary infection:
"Arterial gas embolism is a major cause of death in diving and the initiating cause (pulmonary barotrauma) usually goes undetected. Caused most often by the expansion of respiratory gases during ascent, it also occurs when the breath is held during ascent from a dive, when there is local pulmonary pathology, when there is dynamic airway collapse in the non-cartilaginous airways and if there is low pulmonary compliance, particularly if this is not distributed evenly throughout the lungs. Boyle's law is the physical law controlling the event. Experimental evidence indicates that intratracheal pressures of about 10 kPa (4 fsw or 1.22 m. or ascending from 170 feet or 51.82 m. to 120 feet or 36.58 m.) are all that's needed for it to happen. Distention of the alveoli leads to rupture, alveolar leakage of gas, and extravasation of the gas into the arterial circuit.
....When there is local pulmonary pathology, when there is dynamic airway collapse in the non-cartilaginous airways and if there is low pulmonary compliance....
As caused by asthma or a respiratory infection!
Diving Hyperb Med. 2012 Dec;42(4):236.
Abstract
INTRODUCTION:
The aim of this study was to evaluate the effect of a single, shallow, swimming pool scuba dive on pulmonary function in divers with asthma as compared to controls. Opinions concerning the risks of diving with asthma are still contradictory and inconclusive in the diving community.
METHODS:
Baseline pulmonary function tests (PFTs) were performed on a group of 22 divers with asthma and on a control group of 15 healthy divers. The same PFTs were repeated within 10 minutes after a single pool dive, at 5 metres' depth for 10 minutes. PFTs were measured using a portable Jaeger SpiroPro[emoji769] device. Student's paired t-tests and linear mixed effects model comparisons and interactions within the groups were used in the data analysis.
RESULTS:
Divers with asthma initially presented significantly lower values of FEV1/FVC%* (P < 0.01), FEF25* (P < 0.01), FEF50* (P < 0.001), FEF75* (P < 0.01) and FEF25-75* (P < 0.001) compared to controls. There were significant reductions in FEV1 (P < 0.01), FEV1/FVC% (P < 0.05), FEF50* (P < 0.01), FEF75* (P < 0.05) and FEF25-75* (P < 0.001) in the asthma group after the dive as compared to the control group. PEF was initially lower, although not significantly, in the asthma group and did not change significantly after the dive in either group (P > 0.05).
CONCLUSIONS:
A single, shallow, pool scuba dive to 5 metres' depth may impair function of small airways in asthmatic divers. More studies are necessary to estimate the risks when divers with asthma practise scuba diving. PFT results should be analysed after replicated dives in deeper pools and controlled open-water conditions.
Also:
http://www.diversalertnetwork.org/medical/faq/Asthma_and_Scuba_Diving
Enough of the BS now people- accept reality. This was solidly the fault of the instructor and family who lied on the medicals...
(joke) ) won't understand them. But in my mind letting the students know what they should be taught is important, very similar to a Student Learning Agreement which is an AWESOME thing...that gets used too little (even by me)
