Water body uses
Transport nutrients
Regulates temperatures
Lubricates membranes
Facilitates digestion
How much water do you need a day
1.5-2.5 liters
Makes up 50-60% of our body
Sensible water loss
Can measure
Urine, feces, wound drainage
Insensible water loss
Hard to measure
Breathing in your lungs, sweating, GI secretions
Extracellular fluid distribution
Intravascular fluid - liquid part of blood
Interstitial fluid - btwn cells and blood vessels
Transcellular fluid- cerebrospinal, peritoneal
Most abundant electrolytes in
Extra- sodium
Infra- potassium
Active transport
How cells maintain high intercellular concentration
Diffusion
Passive movement of electrolytes down a concentration gradient: ex: exchange o2 and co2 in lungs
Osmosis
Water moves across cell membranes
Osmolality
Concentration of particles in a solution
What regulates fluid
Kidneys
Heart
Lungs
Brain
Normal excretion of kidneys
30 ml an hour
Filtration
Moving fluid in and out of capillaries (like in the kidneys)
Hydrostatic pressure
Force of fluid pressing outward against a surface. Happening inside cells
Isotonic fluid
Same osmolality of blood plasma. Saline, LR.
Hypotonic solution
More dilute than blood
Hypertonic solution
More concentrated than blood
Disturbances in fluid and electrolytes
Fluid imbalances:
Dehydration
Hypovolemia
Hyperbole is
Electrolyte imbalance
Hypovolemia
Fluid volume deficit — when loss of extra cellular fluid volume exceeds the intake of fluid
Hypovolemia causes
Insensible water loss or perspiration- fever, heatstroke
Diseases that causes increased urinariin
Diuretic therapy, laxative use
Hemorrhage
GI Loss, NG drainage, diarrhea, fistula drainage, vomiting
Third space shifting- burns, intestinal obstruction
Hypovolemia signs and symptoms
Deterioration of mental status
Thirst, dry mouth
Tachycardia, absent pulses
Poor skin turger, decreased cap refill
Orthostatuc hypotension - dizzy when standing
Flat jugular veins
Decreased urinary output
Weight loss
Cool, pale skin
Nursing process of hypovolemia
Asses vs and loc
Asses skin forgot
Assess moisture of oral cavity
Encourage fluids
Monitor i&o
Daily weights
Treat underlying cause
Isotonic fkuids
Education
Hypervolemia
Excessive retention of water and sodium in ECF in near equal proportions
Causes of hypervolemia
Congestive heart failure and renal failure