FCCN level 1 Exam Questions and Correct Answers |
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minimum urine output for adult Ans: 0.5mL/kg/hr
ADH (antidiuretic hormone) Ans: - water retainer
- vasoconstrictor (also called Vasopressin)
- produced by hypothalamus
- store and released from posterior pituitary
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ADH pathway Ans: - hypothalamus senses low blood volumed and
increased serum osmolality
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- signal pituitary to release ADH
- ADH causes kidney to retain water
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- water retention increases blood volume and decreases serum osmolality
ANP (atrial natriuretic peptide) Ans: - cardiac hormone stored in atria
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- released when atrial pressure increases
*works opposite of RAAS by decreasing BP and reducing intravascular
volume
- important diagnostic marker in CHF
hydrostatic pressure Ans: - forces fluids and solutes through the
capillary wall and into the tissue spaces
colloid osmotic pressure Ans: - pulling force of albumin in the
intravascular spaces
- pull fluid into vasculature
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maintenance fluid therapy Ans: - replaces normal ongoing losses of
water and electrolytes (urine, sweat, respiration, stool)
replacement therapy Ans: - corrects any existing water and or electrolyte
deficits
isotonic fluids Ans: - tonicity equal to plasma in the body
- no fluid shifts because the solutions are equally concentrated
- LR
- NS
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- D5W
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hypotonic fluids Ans: - lower concentration of solutes in the vasculature
than in the cell
- fluid shifts into the cell to dilute the electrolytes (CELL SWELLS)
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- 0.45NS
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hypertonic fluid Ans: - higher concentration of solutes in the vasculature
than in the cell
- pulls fluid out of cells and into the vessels (CELL SHRINKS)
- D5 .45NS
- D5NS
- D5LR
- 3%, 7%, 23.4% NaCl
colloids Ans: - pull fluid into bloodstream
Albumin
- 5% is osmotically equal to plasma
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- 25% draws 4 times the normal volume into the circulation
blood Ans: - not a risk free fluid replacement
- this is liquid transplant
third spacing Ans: - fluid is not lost from the body but the fluid is not
available for use in the intracellular or extracellular compartments (fluid
is in between tissues/cells)
- this patient is intravascularly dry and still needs more fluid
-
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can you give platelets through the ranger Ans: - no it will aggreggate the
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platelets
hyponatremia Ans: - less than 135 -145
- weakness
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- abdominal cramping/leg cramps
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- dizzy
- change in LOC
- seizures
different ways to treat hyponatremia Ans: - hypovolemic (give IV fluid)
- euvolemic (fluid restriction)
- hypervolemic (diuretic)
severe hyponatremia Ans: - EMERGENCY
- below 115
- give hypertonic saline if patient is symptomatic