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Homeostasis
Fundamentals of nursing
34
Nursing
Undergraduate 1
04/14/2010

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Term
What can pass through cell membranes with no assistance?
Definition
water, oxygen, nutrients
Term
What can not pass through cell membranes unaided because of their size?
Definition
most proteins, RBC's and gluconse
Term
When the concentration of fluid outside the cell is the same as the inside of the cell what happens?
Definition
No diffusion or osmosis occurs because there is no fluid gradient. It is an isotonic situation.
Term
If the solution outside of the cell is more concentrated than inside the cell what happens?
Definition
Water is pulled out of the cells, causing cell to shrink and become dehydrated. The extracellular fluid is hypertonic.
Term
If the inside the cell is more concentrated than the fluid outside the cell, what happens?
Definition
Water is sucked into the cell because the cell is hypertonic and the fluid around the cell is hypotonic.
Term
When would it be important for a patient to have strict I/O measurements?
Definition
Patients who have had surgical procedures, are unstable, on fluid restrictions, take diuretics, history of cardiopulmonary or renal disease, or recieving IV therapy.
Term
What are signs of FVE? (fluid volume excess)
Definition
weight gain, edema, bounding pulse, hypertension, crackles, dyspnea, and JVD.
Term
What are signs of FVD? (fluid volume deficit)
Definition
sudden weight loss, dizziness, confusion, weak pulse, orthostatic hypotension, low urine output (less than 30mL/hr
Term
What are the three major types of IV fluids?
Definition
Total parenteral nutrition (TPN), crystalloids (replace fluid and electrolytes), Colloids (which replace larger substances like blood and blood components.
Term
Crystalloids can be broken into what three subcategories?
Definition
Isotonic, hypotonic, and hypertonic.
Term
What contents would an isotonic fluid have?
Definition
the same portions of water and electrolytes as normal blood plasma.
Term
What contents would a hypotonic solution contain?
Definition
more water than normal blood plasma.
Term
What contents would a hypertonic solution have?
Definition
More solutes (electrolytes) than normal plasma.
Term
If a patient has a fluid volume deficit, where he/she has lost equal portions of water and electrolytes from plasma, what solution would he be given?
Definition
isotonic
Term
If a patient requires electrolyte replacement, what solution would a patient be given?
Definition
hypertonic (D5)
Term
A patient is brought into the ER after passing out while playing golf for several hours in 100°F, high humidity weather. The physician states the patient is dehydrated and has lost a large amount of water. Which of the following IV fluids would you, the RN, expect the physician to order?
Definition
0.45% NS
Term
What is the responsibility of the nurse during IV therapy?
Definition
assessed hourly and prn including: IV insertion site, type and size, dressing, tubings, solutions, iv rate, how its being regulated..
Term
What are the common central vessels used for IV access?
Definition
jugular, subclavian, and femoral.
Term
What is phlebitis?
Definition
edness along the vessel where the IV is infusing due to mechanical or chemical trauma. The vessel may be swollen, red, warm to touch, and tender from the inflammation of the vessel.
Term
What is infiltration of an IV?
Definition
leakage of the IV fluid or medications into the tissues around the IV site. The area may be swollen and cool to touch.
Term
What is extravasation and what can occur from it?
Definition
Extravasation is the leakage of tissue damaging medications into the tissues surrounding the IV site. Depending on the medication tissue damage and necrosis can occur.
Term
what is the benefit of a butterfly catheter?
Definition
winged tips for better stability and easier insertion.
Term
How does an over the needle catheter work?
Definition
A metal needle is used to first puncture the vein and then a plastic catheter is threaded into the vein and remains in place during therapy.
Term
What is a PICC line?
Definition
A PICC line is a catheter that looks like a peripheral line, but is really inserted in an antecubital site and threaded into the right atrium.
Term
Where are central line catheters inserted?
Definition
subclavian, jugular, or femoral and the line is threaded into the right atrium of the heart.
Term
What is an implanted vascular access device or Port-a-cath?
Definition
Surgically placed in a pocket of tissue under the skin. It is accessed when a Huber needle is inserted through the skin into the device.
Term
What are intraosseous devices?
Definition
A needle that is inserted into the flat plate of a bone and deliver fluids and medication directly into the marrow.
Term
What are the different ways a medication can be administered via IV?
Definition
Mixed in the primary IV bag, secondary IV bag, Syringe pump, or IV push.
Term
What is the benefit of IV therapy?
Definition
instant, can be used on NPO and nauseous patients, good for emergency situations..
Term
Including the 5 rights, what should also be checked before hanging an IV solution?
Definition
crystallization and cloudiness, expiration date, compatibility if mixing drugs or if another iv bag is hung.
Term
When hanging a secondary bag, where do you place it?
Definition
The secondary bag needs to be higher than the primary bag in order to infuse first.
Term
What are the different types of blood/ blood products that a patient can receive?
Definition
whole blood, packed red blood cells, platelets, fresh frozen plasma.
Term
What must a nurse do when a patient is recieving blood/ blood products?
Definition
vitals before 15 minutes during, and after procedure. Nurse must also evaluate BP and fever and alert doctor if sudden changes.
Term
What should be done if a patient has a suspected reaction during an infusion?
Definition
physcian notified, blood transfusion stopped, and NS opened with fluid running slowly.
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