ELECTROLYTES Flashcards
ORDER OF HYDRATION
- Infant: priority
- older adult/elderly
- male
- female: least
High risk for dehydration
infants followed by elderly
Has delay to thirst regulating center
Older adults
Thirst regulating center
Hypothalamus
First sign of dehydration among elderly
Constipation
Fluid compartment:
Blood vessel (Plasma)
Measurable; 30% fluid
Extracellular/ Intravascular
Fluid compartment:
Life-threatening dehydration/ Systemic complication
Blood vessel (Plasma) or Extracellular/intravascular
Fluid compartment:
Cell
most abundant fluid 70%
localized complications
Intracellular
Fluid compartment:
in between cells
Same manifestation with intracellular
Interstitial
Low molecular weight (small molecules)
passes through fluid compartments
low oncotic pressure
Crystalloid
Hypertonic, isotonic, hypotonic
Crystalloid (Low oncotic pressure)
Stays in blood vessel
high molecular weight
High oncotic pressure
Colloid
Packed RBC, albumin, Plasma expander
Colloid (high oncotic pressure)
> 0.9% IVF
hypertonic
PNSS
isotonic
PLRS
isotonic
D5W
isotonic
0.9% IVF
Isotonic
0.25% nacl
hypotonic
0.33% nacl
hypotonic
0.45% nacl
hypotonic
<0.9 % IVF
Hypotonic
D50W
Hypertonic
D10W
Hypertonic
D5LR
Hypertonic
D50.9% nacl
Hypertonic
TPN
Hypertonic
D50.45% NACL
Hypertonic
IVF MANIFESTATIONS: (Cells to B. vessels)
-hypervolemia
- hypertension
-poluria
-cellular dehydration (dhn)
-dry mouth
-polydipsia
-dry skin
-altered mental status (confusion/ disorientation)
HYPERTONIC overdose
IVF MANIFESTATIONS: (B. vessels to cells)
-hypovolemia
-hypotension
-oliguria
-DHN
-edema
-ascites
-Cerebral edema
Hypotonic overdose
Normal value: sodium (na)
135-145 meq
Normal value: potassium (k)
3.5-4.5 (5.5) meq
Normal value: calcium (ca)
4.5-5.5 meq or 8-10 mg/dl
Normal value: Magnesium (mg)
1.5-2.5 meq