The focus in this new title is on PFO (Patent Foramen Ovale) - [hole in the heart] as a risk factor in diving and thus the text is concerned primarily with dissolved gas and the subsequent aberrant distribution of those venous bubbles in the presence of a natural and common anatomical variant of cardiac development.
The prevalence of PFO is about 25% in the general population and several respectable investigators have studied this problem and feel that PFO should be considered a definite risk factor for the development of decompression sickness.

This is a highly specific review of a relatively controversial topic in diving medicine by a research group that has published extensively in this area. This text is generally very readable and thought provoking. It provides an excellent update on recent research in a fascinating area of diving medicine. It should be of interest to all involved in diving medicine."
--SPUMS Journal Dec 2007, Dennis Boon vonOchsee
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