Here it is again, good for debunking a few myths, as well as taking the right precautions.
Avoiding AMS (Acute Mountain Sickness)
Avoiding AMS (Acute Mountain Sickness)
If you’re considering climbing Kilimanjaro, or any other major peak over 4000 metres, print this out and make sure that your tour organiser is a legitimate, registered guide who has actually been up the mountain and is experienced in identifying AMS symptoms.
- AMS falls on the extreme side of altitude related illnesses, which affects 70 per cent of high altitude trekkers above 3500 metres. Symptoms such as mild headaches, nausea, and loss of appetite are common, and while these symptoms do not automatically indicate the onset of AMS, their presence should not be ignored in the overall picture.
- AMS falls on the extreme side of altitude related illnesses, which affects 70 per cent of high altitude trekkers above 3500 metres. Symptoms such as mild headaches, nausea, and loss of appetite are common, and while these symptoms do not automatically indicate the onset of AMS, their presence should not be ignored in the overall picture.
- There is no correlation between AMS and age, gender or fitness. It can strike anyone at almost any altitude above 3500 metres.
- A too fast ascent, low fluid intake (typically less than 3 litres of water per day), severe cold and prolonged exposure to altitude can lead to the onset of AMS.
- There is no known method of pre-determining whether you will be a sufferer of AMS. As such, never be cavalier about the seriousness of altitude related symptoms. No human being can ‘walk through’ the symptoms of AMS. By going higher with AMS symptoms, you are exponentially increasing the risk of grave injury or death. Even by staying at the same altitude, you are taking a big risk.
- AMS can take two forms, both potentially fatal:
o HACE (High Altitude Cerebral Oedema), there is a build-up of fluid on the brain (and therefore swelling), potentially causing loss of coordination, incoherence, dizziness, persistent severe headaches, severe nausea, vomiting etc. If any of these symptoms are identified at altitudes above 3500 metres, the patient must be monitored without any further increase in altitude.
o HAPE (High Altitude Pulmonary Oedema) occurs when there is a build-up of fluid in the lungs. A persistent, inexplicable cough that develops at altitude can often be an indicator, as are shortness of breath while at rest, tightness in the chest or extreme fatigue. If a gurgling sound can be heard when listening to the affected person's breathing, it is a sign of HAPE in a more advanced state. A telltale sign of blood or froth in the affected person's sputum after coughing is a sure sign that there is a serious problem and the person should immediately stop ascending and descend immediately. A pallid complexion with the lips, nails and outer edges of the ears turning blue from lack of oxygen is also a sign of NAPE.
- There is a saying that only three cures exist for altitude sickness – descent, descent, descent. If the weather and conditions allow for a safe descent after AMS has been identified (or suspected), bring the person to a lower altitude immediately, regardless of the time of day. Time is of the essence. (In the case of HAPE, the patient should preferably be moved in a sitting position).
- A too fast ascent, low fluid intake (typically less than 3 litres of water per day), severe cold and prolonged exposure to altitude can lead to the onset of AMS.
- There is no known method of pre-determining whether you will be a sufferer of AMS. As such, never be cavalier about the seriousness of altitude related symptoms. No human being can ‘walk through’ the symptoms of AMS. By going higher with AMS symptoms, you are exponentially increasing the risk of grave injury or death. Even by staying at the same altitude, you are taking a big risk.
- AMS can take two forms, both potentially fatal:
o HACE (High Altitude Cerebral Oedema), there is a build-up of fluid on the brain (and therefore swelling), potentially causing loss of coordination, incoherence, dizziness, persistent severe headaches, severe nausea, vomiting etc. If any of these symptoms are identified at altitudes above 3500 metres, the patient must be monitored without any further increase in altitude.
o HAPE (High Altitude Pulmonary Oedema) occurs when there is a build-up of fluid in the lungs. A persistent, inexplicable cough that develops at altitude can often be an indicator, as are shortness of breath while at rest, tightness in the chest or extreme fatigue. If a gurgling sound can be heard when listening to the affected person's breathing, it is a sign of HAPE in a more advanced state. A telltale sign of blood or froth in the affected person's sputum after coughing is a sure sign that there is a serious problem and the person should immediately stop ascending and descend immediately. A pallid complexion with the lips, nails and outer edges of the ears turning blue from lack of oxygen is also a sign of NAPE.
- There is a saying that only three cures exist for altitude sickness – descent, descent, descent. If the weather and conditions allow for a safe descent after AMS has been identified (or suspected), bring the person to a lower altitude immediately, regardless of the time of day. Time is of the essence. (In the case of HAPE, the patient should preferably be moved in a sitting position).
- AMS can manifest itself at relatively low altitudes (below 4000 metres). When it occurs at these lower altitudes it can be overlooked completely. Always consider that AMS can be the problem until proven otherwise.
- Never ascend quickly to a high altitude. When planning to camp at altitudes of 4500 metres or above, the ascent time should preferably not be less than 5-6 days to that level alone and progress should be slow throughout. Beyond 4500 metres, realistically add an extra ascent day for each 300 metres climbed higher if you're planning to sleep at the higher altitude.
- If you are from a sea level city or live at an altitude below 1000 metres, the effects of altitude can be expected to be more severe on any specific day when you compare yourself with someone living at high altitude (for example Johannesburg or Denver). Where possible, always try to spend one or two nights at a higher altitude before departing for the mountainous country.
And finally, be exceptionally wary of joining a tour group that encourages an overnight stay in the crater in the course of a normal six-day tour. The risks of spending a night at 5700 metres without proper acclimatisation are very, very real.
- With thanks to Dr Retief Laine and Lance de Williers at Tribe Safari. lance@tribesafari.com.
- Never ascend quickly to a high altitude. When planning to camp at altitudes of 4500 metres or above, the ascent time should preferably not be less than 5-6 days to that level alone and progress should be slow throughout. Beyond 4500 metres, realistically add an extra ascent day for each 300 metres climbed higher if you're planning to sleep at the higher altitude.
- If you are from a sea level city or live at an altitude below 1000 metres, the effects of altitude can be expected to be more severe on any specific day when you compare yourself with someone living at high altitude (for example Johannesburg or Denver). Where possible, always try to spend one or two nights at a higher altitude before departing for the mountainous country.
And finally, be exceptionally wary of joining a tour group that encourages an overnight stay in the crater in the course of a normal six-day tour. The risks of spending a night at 5700 metres without proper acclimatisation are very, very real.
- With thanks to Dr Retief Laine and Lance de Williers at Tribe Safari. lance@tribesafari.com.
No comments:
Post a Comment
send me your feedback here