Canoui-Poitrine et al reported scores for predicting susceptibility to high-altitude illness. One score is for subjects without a previous history of high-altitude experience. The authors are from multiple institutions in France.Canoui-Poitrine et al reported scores for predicting susceptibility to high-altitude illness. One score is for subjects without a previous history of high-altitude experience. The authors are from multiple institutions in France.
The exam includes physiologic monitoring during hypoxic exercise testing.
Parameters:
(1) planned daily altitude gain in meters per night
(2) geographical location
(3) sex
(4) regular endurance physical activity (>= 40 minutes of intense aerobic exercise >= 3 times per week)
(5) ventilatory response to hypoxia at exercise (HVRe) in L/min/kg
(6) cardiac response to hypoxia at exercise (HCRe) in beats per minute per percent
(7) change in SaO2 with exercise in percent
Parameter
Finding
Points
altitude gain
<= 400 meters per night
0
> 400 meters per night
2
geographical location
Aconcagua, Mont Blanc, Ladakh-Zanskar
0.5
other
0
sex
male
0
female
0.5
regular endurance
no
0
yes
1
HVRe
< 0.68
3
0.68 to 0.93
1
>= 0.94
0
HCRe
< 0.72
1
0.72 to 0.94
1
>= 0.95
0
change in SaO2 with exercise
< 19%
0
19 to 23 %
1
>= 24%
2
total score =
= SUM(points for all of the parameters)
Interpretation:
• minimum score: 0
• maximum score: 10
• A score > 5.5 is associated with high susceptibility to severe high-altitude illness.
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