16.8.2013(sanjay Pandya) Flashcards
Insensible fluid input
300ml water due to oxidation
TBW
60% of body weight in males
50% of body weight in females
80% in newborn infants
Insensible fluid loss
500ml through skin
400ml through lungs
100ml through feces
Normal daily insensible fluid loss
700 ml
Fluid lost through moderate sweating
500ml
Fluid lost due to severe sweating or high fever
1-1.5L
Fluid loss due to burns or laparotomy
0.5-3 L
Calcium concentration is high in
ECF
Major cations in ICF
K+
Mg+
Equivalents
Moles* valence
Conversion from mmol/L to mg/dl
mmol/L = mg/dl*10/atomic weight
mEq cation or anion/gm of salt
Nacl-17 Kcl-13 NaHco3-12 Calcium gluconate-4 Calcium chloride-14 MgSO4-8
Normal plasma osmolality
275-295 mOsm/kg
Most physiological IV fluid
RL
Composition of Ringer lactate
Na-130 K-4 Cl-109 Lactate-28 Ca-3
Daily requirement of sodium
100mEq or 5.9g