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NU 308 Exam 1 Questions And Answers
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NU 308 Exam 1 Questions And Answers Define low osmolarity and high osmolarity: ANS Low osmolarity: low number solutes in solvent High osmolarity: high number of solutes in solvent Define interstitial space. What do we use to treat fluid buildup in interstitial space: ANS Interstitial space...

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  • October 24, 2024
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NU 308 Exam 1 Questions And Answers
Define low osmolarity and high osmolarity: ANS Low osmolarity: low number solutes in solvent


High osmolarity: high number of solutes in solvent



Define interstitial space. What do we use to treat fluid buildup in interstitial space: ANS
Interstitial space is space between cells and vessels. The treatment for fluid buildup in the interstitial
space is to give albumin (which increases oncotic pressure, and causes the fluid to go into the
intravascular space (space in the blood vessels) ).


Hypertonic: ANS More solute outside the cell. Hypertonic solutions causes RBCs to shrivel up.



What are the isotonic solutions. When do you give them? ANS Isotonic solutions: 0.9% Normal
Saline, Lactated Ringers, and D5W (maybe?)
You give isotonic solutions to people who are hypovolemic (liquid portion of blood (plasma) is too
low - causes: excessive bleeding, vomiting...)



What is the hypotonic solution - what does it do, and what does it treat. ANS Hypotonic solution:
0.45% Normal saline. Hypotonic solution adds fluid to the cells since it has more solvent (e.g., water)
than solute (e.g., salt). It's good at treating hypernatremia (too much salt in blood).



hypertonic solution - what is the name for it - what does it do/treat ANS Hypertonic solution: If
patient has increased cranial pressure, then hypertonic IV fluid could bring the excess fluid from the
cells into the intravascular space. Hypertonic fluid is good for treating hyponatremia and edema
(fluid overload).



How does kidneys regulate fluid and electrolytes ANS The kidneys regulate fluid and electrolytes
by selectively retaining and excreting them via the urine. the RAAS system is also part of this.



How do lungs regulate acid-base balance ANS the lungs regulate acid-base balance by getting rid
of CO2 (acid), and by getting rid of water during exhalation

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