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首页> 外文期刊>Undersea and Hyperbaric Medicine: Journal of the Undersea and Hyperbaric Medical Society >Doppler recordings after diving to depth of 30 meters at high altitude of 4,919 meters (16,138 feet) during the Tilicho Lake Expedition 2007
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Doppler recordings after diving to depth of 30 meters at high altitude of 4,919 meters (16,138 feet) during the Tilicho Lake Expedition 2007

机译：在Tilicho Lake Expedition 2007期间在4,919米（16,138英尺）的高空潜水至30米深后的多普勒录音

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摘要

When going to high altitude (higher than 2,400 meters above mean sea level [about 8,200 feet]), human physiology is strongly affected by changes in atmospheric conditions, including decreased ambient pressure and hypobaric hypoxia, which can lead to severe hypoxemia, brain and/or pulmonary edema, negative changes in body and blood composition, as well as disturbances in regional microcirculation. When adding other factors, such as dehydration, physical exercise and exposure to low temperature, it is likely that nitrogen desaturation after diving at such environmental conditions is far from optimal. There are only single reports on diving at high altitudes. In 2007 a Polish team of climbers and divers participated in the Tilicho Lake and Peak Expedition to the Himalaya Mountains in Nepal. During this expedition, four divers conducted six dives in the Tilicho Lake at altitude of 4,919 meters above mean sea level equivalent (16,138 feet) to a maximum depth of 15 meters of fresh water (mfw) (equivalent to 28 mfw at sea level by the Cross Correction method) and 30 mfw (equivalent to 57 mfw at sea level by Cross correction). Decompression debt was calculated using Cross Correction with some additional safety add-ons. Precordial Doppler recordings were taken every 15 minutes until 90 minutes after surfacing. No signs or symptoms of decompression sickness were observed after diving but in one diver, very high bubble grade Doppler signals were recorded. It can be concluded that diving at high altitude should be accompanied by additional safety precautions as well as taking into account personal sensitivity for such conditions.
机译：当进入高海拔地区（高于平均海平面2400米（约8200英尺））时，人类生理会受到大气条件变化的强烈影响，包括环境压力降低和低压缺氧，这可能导致严重的低氧血症，大脑和/或肺水肿，身体和血液成分的负面变化以及局部微循环障碍。当添加其他因素（例如脱水，体育锻炼和暴露于低温）时，在这样的环境条件下潜水后氮的去饱和度很可能远非最佳。关于在高海拔潜水的报道只有一个。 2007年，一支由波兰登山者和潜水者组成的团队参加了蒂利乔湖和尼泊尔喜马拉雅山脉的山顶探险。在这次探险中，四名潜水员在提里乔湖（Tilicho Lake）进行了六次潜水，海拔平均海拔4,919米（16,138英尺），最大深度为15米淡水（mfw）（相当于海平面28 mfw）。交叉校正法）和30 mfw（通过交叉校正等于海平面上的57 mfw）。减压债务是使用Cross Correction和一些其他安全性附加组件计算的。覆膜后每15分钟记录一次心前区多普勒记录，直到90分钟为止。潜水后未观察到减压病的体征或症状，但在一名潜水员中，记录到非常高的气泡级多普勒信号。可以得出的结论是，在高海拔潜水时，应伴有额外的安全预防措施，并考虑到此类情况的个人敏感性。

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