Bookspan {scuba}

Tissue data from Bookspan's book

Description

Data for several decompression models of Haldane type, giving the tissue halftimes for Nitrogen and the M-values (maximum tolerated partial pressure of Nitrogen for surfacing).

Format

The dataset Bookspan is a list with the following entries:

Halftimes

Halftimes data. A list with entries

Haldane	halftimes for Haldane's original model
USN	halftimes for US Navy original model
DSAT	halftimes for DSAT model
OrcaEdge	halftimes for OrcaEdge computer
MicroBrain	halftimes for MicroBrain computer
ZHL12	halftimes for ZH-L12 model

Mvalues.ata

surfacing M-values in ata (atmospheres absolute). A list with entries

Haldane	M-values for Haldane's original model
USN	M-values for US Navy original model
DSAT	M-values for DSAT model

Mvalues.fsw

surfacing M-values in fsw (feet of seawater). A list with the same structure as Mvalues.fsw.

Details

Bookspan (1995) tabulates the parameters of several different decompression models of the classical Haldane type. The basic parameters for such a model are

halftimes:

the Nitrogen diffusion halftime (in minutes) for each tissue in the model

M-values:

the maximum partial pressure of Nitrogen in each tissue which would be tolerated without symptoms at an ambient pressure of 1 atmosphere (the “surfacing M-value”).

The data tabulated in Bookspan (1995, page 16) purportedly give the halftimes for Haldane's original model, the original US Navy model, the DSAT model (basis of PADI repetitive dive planner), the OrcaEdge, MicroBrain and Aladin dive computers, and the Buehlmann ZH-L12 model.

The data tabulated in Bookspan (1995, page 23) give the corresponding M-values (in fsw) for the US Navy and DSAT models only.

These parameters are all contained in the dataset Bookspan.

Author(s)

Adrian Baddeley [e-mail].

Source

Bookspan (1995), page 16 (halftime data) and page 23 (M-values).

References

Bookspan, J. (1995) Diving physiology in plain English. Undersea and Hyperbaric Medicine Society, Kensington, Maryland (USA). ISBN 0-930406-13-3.

Examples

   data(Bookspan)
   Bookspan$Halftimes$DSAT