Parameters Flashcards
What is Skeletal Muscle Index (SMI)
Skeletal muscle mass = amount of muscle attached to bone
SMI = appendicular lean mass / (height)^2
Body Cell Mass (BCM)
Total amount of all cellular elements in the body which constitutes all metabolically active tissues of the body
Phase Angle
Phase angle is a bioimpedance measurement that determines nutritional status of cell membrane.
Low PA values= frail, sarcopenic, malnourished
Predictor for outcomes of cardiac surgery
ECW ratio
Ratio of extracellular water to total body water
Indicator of body water balance
Healthy ECW ratio
.380
If greater than .39 = overhydration
What does Segmental Lean Analysis tell you
Assess muscle imbalance, sarcopenia
Top bar tells you comparison of muscle mass to ideal weight
Bottom bar tells you comparison to current weight
Parameters directly measured by resistance of body tissues to the flow of small alternating currents
- impedance (Z)
- reactance (Xc)
- phase angle (PhA)
Basic Parameters of BIA
BIA provides reliable estimates of body water
- intracellular water (ICW)
- extracellular water (ECW)
- total body water (TBW)
- fat free mass (FFM)
Parameters from estimates of body water
- soft lean mass
- fat mass
- percent body fat (pbf)
- segmental lean
- segmental water ECW ratio (TBW/FFM)
- ECW ratio
How is segmental ECW ratio determined
TBW / FFM
Applied Parameters (indirectly obtained by physiological theories)
- Protein
- Skeletal Muscle Mass (SMM)
- Body cell mass (BCM)
- Basic metabolic rate (BMR)
How is protein determined
Proportional expression to FFM
How is Skeletal Muscle Mass determined
Appendicular lean mass / 0.75
How is Body Cell Mass determined
Protein + ICW
How is BMR determined
21.6 * FFM + 370 = basal metabolic rate
