Water
Males
Total body weight % :-
Liters :-
Females
Total body weight % :-
Children % :-
25
Components of total body water :- TBW in liters :- Divides into 1. 2. Which is greater :-
Formula for 1. ICF :- In liters :- 2, ECF In liters :-
25
Measurement of total body water
STEWART HAMILTON METHOD Indicator Dilution Method Dye used for 1. TBW = 2. ECF = 3. Plasma volume =
26
Direct method of measuring:- Dyes no available 1. TBW = 2. ICF = 3. ECF = 4. Int Fluid :-
26
Here the amount of indicator is known to be
Amount =
Therefore volume :-
Volume =
26
Darrow yannet diagram
ECF :-
Cation :-
Anion :-
ICF
Cation :-
Anion :-
26
Darrow yannet diagram relates :-
Volume change
Omolarity change
27
On normal saline infusion :-
Volume :-
Osmolarity :-
Eg :-
27
Loss of isotonic NaCL :- Ex :- Volume :- Osmolarity :- Known as :-
27
Excessive intake of NaCL :-
Ex:-
Volume:-
Osmolarity :-
27
In SIADH
volume :-
Osmolarity :-
28