Description

The World Health Organization (WHO) reported the impact of altitude on hemoglobin concentrations. Living at altitude may elevate a person's hemoglobin above that seen if the person lived at sea level.


Patient selection: residence at altitude over range from 1,000 to 4,500 meters

 

Parameters:

(1) altitude in meters above sea level

(2) measured hemoglobin in g/L

 

Altitude in Meters

Reduce Measured Hemoglobin by

1,000

2 g/L

1, 500

5 g/L

2,000

8 g/L

2,500

13 g/L

3,000

19 g/L

3,500

27 g/L

4,000

35 g/L

4,500

45 g/L

 

adjusted hemoglobin in g/L =

= (measured hemoglobin) - (correction value)

 

correction value over range from 1,000 to 4,500 meters =

= (2.476 * (X^2)) - (1.381 * (X)) + 1.071

 

where:

• X = (altitude in meters) / 1000


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