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14.8 Calculation of body weight on the basis of
body height
In the start menu, you can set the height of the patient under the menu item New patient
(see "5.2 Switching the unit on/Self-test" on page 41). The device calculates the appropri-
ate ventilation parameters based on the set height and the corresponding ideal body
weight (IBW).
The IBW value is calculated as follows:
(1)
•
Child
IBW = 2.05 x
(2)
•
Adult
IBW male = 50 + 2.3 x [height/2.54 - 60]
IBW female = 45 + 2.3 x [height/2.54 - 60]
With the aid of the IBW, the tidal volume can be calculated as follows:
(KG = body weight)
Example
•
Patient, male, height 185 cm
•
Setting for Vt/kg KG = 6 ml/kg
IBW = 50 + 2.3 x [185 cm/2.54 - 60] = 79.51 kg
Vt= 80 kg x 6 ml/kg = 450 ml
(1)
Source: TRAUB, S.L.; JOHNSON, C.E.: Comparison of methods of estimating creatinine clearance in children. In:
American journal of hospital pharmacy 37, 1980, No. 2, pp. 195–201.
(2)
Source: DEVINE, Ben J. Gentamicin therapy. The Annals of Pharmacotherapy, 1974, Vol. 8, No. 11, pp. 650-655.
EN
Technical Data
152
(height
≤
154 cm):
0,02 x height
e
(height
>
154 cm):
80 kg
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