Memory
when diving at an altitude above 300 metres/1000 feet
Hello Islam, I would like to know more about diving at an altitude above 300 metres or 1000 feet. Are there any special considerations?
Hello! Absolutely, altitude diving has a specific set of unique considerations. Above 300 metres, barometric pressure starts to decrease, which affects how nitrogen is absorbed and released in our bodies. As a result, you might need to modify your dive profiles to avoid decompression sickness or 'the bends'. It's always recommended to get proper altitude diver training.
Interesting! So, does the decreased barometric pressure imply that my standard dive table isn't suitable in these conditions?
That's correct. Standard dive tables are developed assuming sea level pressure. Therefore, they will not appropriately account for the increased nitrogen absorption that occurs at high altitude. For altitude diving, divers typically use modified dive tables or dive computers set to altitude mode.
Oh, I see. What about the issue of hypoxia? How serious is that while diving at such altitudes?
Indeed, hypoxia can be a concern at high altitudes, even before you start diving. It refers to a condition when your body doesn't get enough oxygen. Symptoms can vary but often include shortness of breath, rapid breathing, and confusion. To mitigate this risk, divers should take ample time to acclimatize to the altitude before diving and consider using nitrox mixes with increased oxygen.
Thanks for all the information, Islam. This has been really helpful and insightful.
You're welcome! I'm glad I could help. Remember, safety should always be the priority in any type of diving, including high altitude diving. Don't hesitate to ask if you have any more questions.
Remember: Everything Talkie says is made up!