An improved new class of decompression models that are relevant to scientific and recreational diving.

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An improved new class of decompression models that are relevant to scientific and recreational diving.

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Title: An improved new class of decompression models that are relevant to scientific and recreational diving.
Author: Goldman, S
Abstract: A new class of interconnected compartmental models is projected as the 'gold standard' for decompression modeling. These models are consistent with empirically based physiological data on gas washout rates from mammalian tissue. In these models a central risk-bearing compartment exchanges dissolved gas both with the circulatory system and with contiguous connected non-risk-bearing compartments. These models fit calibration data more accurately and with fewer fitted parameters than do current parallel compartment models. These models also extrapolate beyond their calibration regime much more accurately than do parallel models. This is highly relevant both to scientific and recreational diving where the hit rate is orders-of-magnitude less than that of the calibration dataset. This discussion provides a general overview of the properties of these models in relation to standard parallel models, illustrates their superior capability of accurately predicting hit rates both for very high-risk and very low-risk diving and describes the practical implications of these models for effective decompression in low-risk diving. Using a large subset of the DAN PDE dataset (approximately 70,000 air dives) for which the hit rate (0.015 percent) is comparable to that found with scientific diving, these models are shown to accurately predict the observed hit rate while the older parallel models do not.
Description: American Academy of Underwater Sciences (http://www.aaus.org/)
URI: http://archive.rubicon-foundation.org/10417
Date: 2013

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