Of course, this doesn't only apply to air travel! Even travelling over mountain roads or visiting nearby mountain regions can lead to further decompression, i. It would therefore be better to plan a separate holiday for paragliding and mountain hiking. It is important to observe a sufficiently long surface interval with repeat dives.
If a large amount of nitrogen bubbles are still travelling through the blood vessels, these get smaller during a repeat dive and can then pass through the lung capillaries.
During a repeat dive they then re-expand so that there is now also a large amount of bubbles in the arterial system! A repeat dive during the period when there is a high level of bubbles would therefore have the same effect as a yo-yo dive.
Surface intervals should be as long as possible, particularly after challenging dives. A rest of three hours or more is recommended. After deco dives, challenging technical dives or if there is a high individual risk divers with a known PFO, divers with diabetes, older divers etc.
The current Diving Accident Guidelines for treating decompression sickness have been available since Particularly with mild symptoms and ambiguous complaints, it is important to first consider the possibility of DCS. We assume that even creeps and tiredness are rarely recognised as indications of decompression sickness. Even with muscle and joint pain or blotchy skin, another explanation can readily be found: DCS?
Isn't that something that other people get? There are two important principles for treatment: giving oxygen, which helps to shrink any gas bubbles; and giving fluids. If there are mild symptoms and the diver is conscious and can swallow, fluids should be offered as drinks - approximately half a litre to one litre per hour.
Any drink is suitable for this; only alcohol should be avoided. If the symptoms are only mild, the diver can be observed. With oxygen, more is more! Nasal cannulas or probes are not as well suited as these only allow a lower concentration of oxygen in the inhaled air. If this is the only available system at the scene of the emergency, this is still much better than not giving any oxygen. Attention should be given to any neurological symptoms that may arise, such as disturbed sight, hearing and speech, numbness or paralysis.
A set scheme is the most appropriate method for carrying out regular checks, such as the so-called 5 Minute Neuro Exam. This scheme should be carried out repeatedly and the results should be documented together with the time. If mild symptoms disappear within 30 minutes of treatment, a doctor should be informed for further checks and the diver should be observed for a further 24 hours. If there are still symptoms, treatment is continued.
Contact is made with the nearest diving doctor or the nearest decompression chamber via the rescue coordination centre, the diving base or the divers' emergency service. If loss of consciousness occurs where there is suspected decompression sickness, the diver must be put in the recovery position. In the event of a cardiac arrest, the patient must be placed on their back and CPR should be started immediately.
At the same time, other helpers should notify the emergency services or The diving base, rescue coordination centre or divers' emergency service will inform the decompression chamber. CPR should be continued until the emergency services arrive. Only experienced and appropriately trained helpers should give any intravenous infusion solutions.
Nitrogen is absorbed by the tissues during each dive. While nitrogen narcosis is a temporary condition, it can have serious health consequences. Read on to learn more about the symptoms of nitrogen narcosis and what to do if you or someone else experiences them.
People with nitrogen narcosis often appear that way to others too. More severe cases can also cause someone to go into a coma or even die. Nitrogen narcosis symptoms tend to start once a diver reaches a depth of about feet.
Symptoms start to become more serious at a depth of about feet. However, some of the symptoms, like disorientation and poor judgment, cause divers to swim deeper. This can lead to more serious symptoms. When you inhale compressed air from an oxygen tank while under a lot of pressure from water, it increases the pressure of oxygen and nitrogen in your blood.
This increased pressure affects your central nervous system. Nitrogen narcosis can affect any deep-sea diver, and most experience some of its symptoms at some point. Avoid drinking alcohol beforehand too. Instead, you or your diving partner will likely notice the symptoms first. Make sure that those around you during your dive are aware of the condition and how to recognize its symptoms, in both themselves and others. If your symptoms are mild, you can stay in shallower waters with your dive partner or team while you wait for them to clear.
Once your symptoms have cleared, you can resume your dive at that shallower depth. The bends or decompression sickness , which is also referred to medically as Dysbarism. Dysbarism includes a multitude of symptoms that accompany exposure to excessively rapid changes to environmental pressures. Dysbarism refers to a medical condition, which results from changes in ambient pressure. There are various activities that are associated with pressure changes, but underwater diving is the most frequently cited example.
This can be as minor as a facial barotrauma, which can be caused as a result of mask squeeze. As a trained scuba diver and having dived for over 30 years, I know that decompression sickness or the bends can have serious consequences. The most serious of all consequences of the bends is death. Interestingly, when I typed this question into Google, up pops an article in the Telegraph Newspaper from back in Carl Spencer was a National Geographic diver.
He died as a consequence of the bends or decompression sickness in Greece, whilst filming as part of a member crew. However, you might suddenly feel extremely sleepy, or unusually sluggish to the point where you or others are concerned. Even if you don't notice this symptom, because you're already tired for whatever reason, the next symptom is going to tell you right away that something is wrong. The nitrogen bubbles in your body can collect near your joints, putting pressure on your limbs and cutting off blood flow from areas that need it.
It is likely to start as a dull ache, then increase with intensity over time, and you'll have trouble locating exactly where the source of the pain is. You'll likely want to hold the joint tightly or squeeze it, as this will relieve some of the pressure, but that won't stop it. It will get worse, no matter if you're still, moving, lying down, or standing up.
At this point, it's definitely hospital time. It is always recommended that divers not fly directly after a dive, and there's a good reason for that. If a plane is not fully pressurized, then harmful nitrogen bubbles can form in the blood and tissue, even if there was no problem while you were on the ground!
The change in pressure and altitude is enough that decompression sickness can jumpstart, even on short flights. Also, if you already have minor decompression sickness, this is bound to make it infinitely worse. If you've ever had vertigo before, you know that it's a pretty difficult feeling to forget. You feel nauseated, dizzy, unable to walk a straight line, and there's nothing you can really do to alleviate the symptoms. Well, when you get the bends, pretty much the same thing happens , even in very mild cases.
You might also start hearing a ringing in your ears, and you'll stagger as you try to walk. The ringing and dizziness can be so severe that you may temporarily lose your sense of hearing.
Even if you get to a hospital for treatment, dizziness may still linger for a while during your recovery. One rare but distressing symptom is that loss of bladder function. Abnormal blood flow and change in pressure can make it impossible for you to urinate or sometimes even make it so that you cannot control your urinary function.
To put it simply, you might pee yourself, and you might not even notice. Because of these complications, it's recommended that any medical professionals treating you insert a catheter. Yeah, you have fun with that one. Around the time you start feeling chest pain and shortness of breath, you might start unbuttoning or removing clothes. It's also around that time that you're likely to notice some pretty obvious skin discoloration.
0コメント