Nitrox Diving
Several agencies have begun training recreational divers with oxygen enriched compressed air (EAN). Recreational nitrox diving has in common with traditional compressed air diving the use of nearly all the…
CO2 Acclimatization
ACCLIMATIZATION YOU DON'T WANT - CARBON DIOXIDEJolie Bookspan, Ph.D.University of Pennsylvania, Philadelphia, PAand(The Rev.) Edward H. Lanphier, M.D.,University of Wisconsin-Madison, Madison, WIIn a US Navy experimental facility, testing for new…
CO2 Retention in Scuba Diving
CO2 retention with it's attendant dangers of death from convulsions and hypoxia (low oxygen level) is primarily of concern to the scuba diver due to "skip breathing". Other sources of…
How To Travel With Lung And Heart Disease
Even if you have chronic obstructive pulmonary disease (COPD), emphysema, chronic bronchitis, cystic fibrosis, asthma, or heart disease and need an oxygen supply, you should be able to travel so…
Air Travel, Oxygen and the Diver
There is a recurring question that arises concerning the use of oxygen in divers returning by air after having had treatment for a decompression accident. Dr. David DuBois has written…
Nitrogen Narcosis
What is it?Nitrogen narcosis is an effect on the brain of gaseous nitrogen that occurs to divers who go below 100 FSW, due to the laws of partial pressures. Nitrogen…
Partial Pressure Physics in Diving
Partial-pressure effects: The partial pressure of a gas is determined by the concentration of the gas and the ambient pressure, eg, the concentration of O2 in air is about 21%,…
Special Consideration for Men Divers
BYDR. JOLIE BOOKSPANThis article first appeared in theAugust 1992 issue of Underwater USAUpdated 2003Many false statements perpetuate about the ‘special considerations' of women divers. However, there are true physiologic problems…
Postpartum Diving
After vaginal delivery, diving can be resumed after released by the obstetrician. This is usually after the cervix closes, about 21 days. In another week, most muscle tone has returned,…
PMS (Premenstrual Syndrome)
PMS is an ill-defined group of symptoms that are associated with the hormonal changes that occur in the week or so prior to menses. When severe, the personality and anti-social…
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