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ESTIMATION OF IDEAL BODY WEIGHT FOR AMPUTEES
In the case where a patient had an amputation, ideal body weight (IBW) cannot be compared to the standards for normal adults. Although body proportions vary from individual to individual, segmental weights can be used to prove an approximation of IBW.
Percent Total Body Weight by Individual Body Parts |
|
Body Part |
Percent |
Head |
8.0 |
Trunk |
50 |
Upper arm |
2.7 |
Forearm |
1.6 |
Hand |
0.7 |
Entire arm |
5 |
Thigh |
10.1 |
Calf |
4.4 |
Foot |
1.4 |
Entire leg |
16 |
Determining Adjusted Body Weight for the Amputee
Using the IBW of the patient before the amputation, subtract the percentage of the body weight lost due to amputation. For a method of determining IBW, see Suggested Weights for Adults.
Example: Determine the adjusted IBW for a woman 5’5” with a below-knee amputation of the right leg.
IBW (female 5’5”) .................................................................... ...................................................................................................... |
125 lb |
|
Right below the knee (calf 4.4% + foot 1.5% = (-5.9%)_________ |
7.5 lb_______ |
_________________ |
Adjusted IBW.................................................................... |
117.5 lb |
|
Source: Grant A, DeHoog S. Nutritional Assessment Support and Management. 5th ed. Seattle, Wash: Grant/DeHoog; 1999. |
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Manual of Clinical Nutrition Management
Copyright © 2008 Morrison Management Specialists, Inc.
All rights reserved.