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Water btw and around cells: lymph, spinal fluid, secretions (intercellular fluid)
Abnormal accumulation of fluid in intercellular spaces or body cavities, usually best seen in periphery
_________ fluid decreases during dehydration to shift fluid out of cells (decrease cell mass)
Third space edema
Edema that is associated with disease or injury (CHF, cirrhosis, burns), due to decrease plasma protein, may reduce blood volume
Changes in albumin concentration can change the osmolarity of blood plasma-- fluid shifts into or out of this and other compartments=
Movement of particles across a permeable membrane from an area of high concentration to low concentration
Movement of a solvent (usually water) across a semipermeable membrane from low solute concentration to high solute concentration
lesser solute concentration to one of greater solute concentration
Water moves from an area of _______ concentration to one of _______ concentration, until equilibrium is established
Fluid volume deficit and is accompanied by hyperatremia
Hypovolemia or dehydration=__________ and is accompanied by what?
Fluid volume excess and is accompanied by hypoatremia
Hypervolemia or overhydration= ___________ and is accompanied by what?
__________ manages fluid balance by minimizing fluid losses or increasing urine o/p capillary filtration in the glomerulus and reabsorption in the renal tubules
Obligatory fluid excretion
Barest minimum amt of fluid required for removal of urinary waste materials=
Urea, Sodium, Potassium, and Chloride-- comprise the renal solute load
Urinary Waste Materials are.... and comprise the ___________
Kidneys inefficiency in managing renal solute load, higher percentage of body weight, large TBSA per unit body wt
Why do infants have increased water needs?
hypothalamus and stimulated by increased osmolality or decreased extracellular fluid (ECF)
Fluid intake is controlled by thirst response, governed by _____ and stimulated by...
Lactate which converts to lactic acid (acidosis)
What needs to be monitored when using a lactated ringer?
The sum of the concentration of all serum cations is about ____ mEq/L and is about equal to the sum of serum anions
ATPase Pump- Active transport system (Sodium and Potassium dependent)
Maintains ionic concentration, manages cell volume and osmolality, requires ATP and comprises 40% BEE
What electrolyte is predominant cation in the ECF, regulates size of ECF, contributes to osmotic equilibrium, acid base balance, and is regulated by kidney?
Dehydration that is proportional loss of water and sodium, as in GI losses, burns, osmotic diuresis, excessive sweating (concentrated blood but not sodium)
Dehydration that is Water loss greater than Na loss as in inadequate fluid intake, loss of solute-free water from GI tract , renal dz with defective concentrating function=
Give hypotonic, non or low electrolyte solutions sufficient to replace (D5W)
Treatment for Hypertonic Dehydration=
Dehydration that is excess serum H2O relative to sodium, i.e. sodium loss > water losses=
What electrolyte is most prevalent intracellular cation, crucial in maintaining cell volume, contributes to fluid balance, osmotic equalibrium, muscle tissue formation, neuromuscular activity?
Disorder of Serum electrolyte associated with muscle weakness, leg cramps, irregular pulse, paralysis, and respiratory disturbances
Which electrolyte is the principal anion of ECF; helps maintain osmotic equilibrium and water balance?
normal tissue metabolism, metabolism of phosphates and sulfur, production of lactate and ketones, and CO2
What type of acid base imbalance is caused by renal failure and accumulation of H+ and urea, lactic acidosis, ketoacidosis, excess loss of HCO3 via GI tract?
What type of acid base imbalance is caused by severe gastric fluid losses, excessive urinary acid losses, severe hypokalemia?
What type of acid base imbalance is caused by depressed ventilation-- sleep apnea, asthma, airway obstruction?
What type of acid base imbalance is cause by head injuries, brain tissue disturbances e.g. stroke or tumor?
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