By Benna Crawford Up to date April 13, 2018
An exhilarating sport, deep-water diving is made much more thrilling by the frisson of hazard. Licensed divers take further programs to obtain deep-water dive certification — and that coaching features a thorough grounding within the dangers and security procedures for descending and ascending to keep away from uncomfortable or harmful reactions to the adjustments in stress. Once you do come up too quick from a deep dive, you’ll be able to expertise decompression illness — DCS — generally referred to as “the bends.” DCS is extraordinarily painful and may be deadly.
A deep-water dive includes depths of 60 to 130 ft, in line with PADI, the Skilled Affiliation of Diving Instructors, the company that dominates worldwide scuba certification. For a leisure diver, this normally means a wreck dive or a bounce dive — a dive to the underside or deepest depth with the quickest doable return to the floor. Bounce dives are supposed to reduce the stress issues you’ll be able to encounter in deep-water dives however they nonetheless carry a level of threat.
Nitrogen Bubbles and DCS
Deep diving locations extra stress in your physique than shallow diving resulting from stress variations and colder water temperatures. Strain variations pose the best well being dangers, and it helps to grasp why. The compressed air in your scuba tank is denser — you absorb extra nitrogen and oxygen molecules with every breath. Nitrogen, an inert fuel, dissolves in your blood and tissues, and is finally expelled out of your physique. However if you rise shortly to the floor from the depths, the resultant stress drop causes the nitrogen to type fuel bubbles in your tissues and blood, which blocks your circulation. Decompression illness ensuing from a too-rapid ascent could cause crippling joint ache, again ache, extreme and sudden headache, tingling and numbness, dizziness, chest ache, disorientation, shock, paralysis, stroke and loss of life. When instant therapy just isn’t accessible DCS may be deadly.
Emergency therapy for a diver stricken with DCS requires dissolving the nitrogen bubbles by rising stress, or recompression. This takes place in a hyperbaric chamber, which controls the stress and slowly lowers it to floor stress because the dissolved nitrogen is generally exhaled. En path to a hyperbaric chamber, the stricken diver ought to breathe 100% oxygen from a masks. In delicate instances, this can be sufficient to alleviate signs, though a medical analysis is advisable. Some dive boats, similar to analysis vessels that routinely function staging vessels for deep dives, have their very own hyperbaric chambers, however leisure divers will most certainly require emergency transport to a facility with a chamber. Delays in treating the bends may be expensive, so you will need to know what security provisions can be found if you plan a deep dive.
Deep dives ship each cardio and resistance train, and scuba diving is a soothing stress-reliever. To benefit from the well being advantages with out taking undue dangers, create your personal prevention protocol for decompression illness. Overview your certification supplies earlier than every dive and skip the deep dives in case you are severely chubby, pregnant, or have heart problems or lung issues. Do not deep dive with a joint harm — nitrogen bubbles are painful sufficient to joints to cripple you. Ease off on alcohol consumption earlier than diving and do not cram numerous repeat deep dives into in the future. It is higher to attend at the very least 24 hours after a deep dive earlier than flying, resulting from adjustments in cabin stress. And, do not assume primary wreck diving methods are adequate to arrange you for a deep dive. Wreck diving precautions along with thorough deep diving coaching will get you down and again safely.