I know that this one has probably been beaten into the rug, however I wish to have a deeper knowledge of nitrogen narcosis. I understand the rudimentary concept that is taught in classes; what I am in search of is a in-depth discussion of physiology; what are the common and uncommon signs and symptoms?; if medications affect the suseptibility of narcosis, which medications do so and what are their affect?; what's the difference of a nice clear warm ocean dive versus a cold, dark lake dive in terms of onset and/or suseptibility?
I have a strong knowledge base in physiology and anatomy; I have read the DAN article and the one in Dive Training; I have read past posts on this board an others; I want some knowledge beyond the basics. Please offer books, articles, links, or personal experiences with this topic.
I have over 400 hours of bottom time in various diving conditions. I have always been comfortable and relaxed underwater, until late. This past weekend I went diving and hit 97 feet and suddenly I felt this impending doom and perceptual narrowing, increased heart rate, and nervousness. This same feeling overcame me in July when I went to Cayman; it happened at 70 feet after a 115 foot dive. I regained composure at about 50 feet on both dives. I have been deeper in the past, but have never experienced these feelings. The only affects of narcosis that I have noticed have been sluggish thought processes. I am curious if this kind of thing is a normal narcotic effect. Furthermore, this year I haven't been real deep on a regular basis and am wondering if the type and depth of previous dives can affect tolerance levels?
I know that's a lot of questions in one post; please take on the ones that you can and leave the others to other people. Thanks in advance for any insight and offering of knowledge.
I have a strong knowledge base in physiology and anatomy; I have read the DAN article and the one in Dive Training; I have read past posts on this board an others; I want some knowledge beyond the basics. Please offer books, articles, links, or personal experiences with this topic.
I have over 400 hours of bottom time in various diving conditions. I have always been comfortable and relaxed underwater, until late. This past weekend I went diving and hit 97 feet and suddenly I felt this impending doom and perceptual narrowing, increased heart rate, and nervousness. This same feeling overcame me in July when I went to Cayman; it happened at 70 feet after a 115 foot dive. I regained composure at about 50 feet on both dives. I have been deeper in the past, but have never experienced these feelings. The only affects of narcosis that I have noticed have been sluggish thought processes. I am curious if this kind of thing is a normal narcotic effect. Furthermore, this year I haven't been real deep on a regular basis and am wondering if the type and depth of previous dives can affect tolerance levels?
I know that's a lot of questions in one post; please take on the ones that you can and leave the others to other people. Thanks in advance for any insight and offering of knowledge.