Piltstuteckaagy
Body uid measurement & uid balance
Total body water/fluid
• TBW is an average of 60% of total body
weight→ 42L in 70 kg MA
Factors affecting TBW
Physiological Pathologica
• Degree of • Dehydration
obesity→ as • Over-hydration
obesity↑, water
content↓
• Age→ TBW ↓ with
age as fat↑
• Sex→ females
have more fat so
TBW
ioinitwI'IIIIIFT I
fl fl
, is
851
ifeng.am
70 801 221 10201 101
Body water distribution
Extra-cellular uid (ECF) Intra-cellular uid
(ICF)
1213,671
nigggtial
HIM
Plasma lymph
Transgggan
• Accounts for 40%
of body weight
• 28L in 70 kg MA
• Accounts for 20% body weight
• 142 in 70 kg MA
• 1/4 of water in plasma (3.5L)
• 3/4 of water in interstitial
fluid (10.5L)
• Total blood volume → 8%→ 5.6L
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fl
Body uid measurement & uid balance
Total body water/fluid
• TBW is an average of 60% of total body
weight→ 42L in 70 kg MA
Factors affecting TBW
Physiological Pathologica
• Degree of • Dehydration
obesity→ as • Over-hydration
obesity↑, water
content↓
• Age→ TBW ↓ with
age as fat↑
• Sex→ females
have more fat so
TBW
ioinitwI'IIIIIFT I
fl fl
, is
851
ifeng.am
70 801 221 10201 101
Body water distribution
Extra-cellular uid (ECF) Intra-cellular uid
(ICF)
1213,671
nigggtial
HIM
Plasma lymph
Transgggan
• Accounts for 40%
of body weight
• 28L in 70 kg MA
• Accounts for 20% body weight
• 142 in 70 kg MA
• 1/4 of water in plasma (3.5L)
• 3/4 of water in interstitial
fluid (10.5L)
• Total blood volume → 8%→ 5.6L
fl
fl
