Unformatted text preview: ong and coming up too fast
It takes time for nitrogen to enter and to leave the body.
If to much nitrogen is absorbed, it cannot be breathed out normally. Bubbles form in body tissues. Signs/symptoms: Depend on bubble site. Contributing factors: Preventing
Decompression Sickness Avoid dives that are too deep, too long, and/or too fast an ascent.
Dive tables and dive computers allow us to monitor nitrogen levels in our body for a dive or a series of dives. Follow table rules. Keep well hydrated. Treating
Decompression Sickness First aid includes breathing 100% oxygen. Treatment is in a recompression chamber. The chamber is pressurized to force the nitrogen bubbles to go back into solution. Then the pressure is slowly released. Dive Table Overview
Dive Table Overview The NAUI Dive Tables monitor the nitrogen in your body
They use the letters of the alphabet to express the extra amount of nitrogen in your body.
The letters range from A to L. Dive Table Terms
Dive Table Terms The following terms apply to the NAUI Dive Tables: Depth. Actual Dive Time (ADT). Dive schedule (depth/time). Maximum Dive Time (MDT). Letter Group Safety stop. Decompression Stop. Dive Table Terms (continued)
Dive Table Terms Residual nitrogen.
Letter Group designation.
Surface Interval Time (SIT).
Residual Nitrogen Time (RNT).
Adjusted Maximum Dive Time (AMDT).
Total Nitrogen Time (TNT). Dive Table Rules
Dive Table Rules Use the deepest depth you reach during your dive. Do not try to average your depths. Use exact or next greater number for your depth.
Use exact or next greater number for your time.
Maximum ascent rate is 30 feet (9 meters) per minute. Dive Table Rules (continued)
Dive Table Rules A “safety stop” is recommended at the end of each dive.
Make your deepest dive first.
Dives shallower than 40 feet (12 meters) are planned as 40 feet (12 meters). Dive Table Rules (continued)
Dive Table Rules SIT must be at least 10 minutes to count as a second dive.
Recommended SIT is 60 minut...
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This note was uploaded on 09/18/2011 for the course PED 102G taught by Professor Staff during the Fall '10 term at University of Texas.
- Fall '10