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118 Cards in this Set

  • Front
  • Back
% of body weight that is water
60%
Most Na- extra or intra cellular?
extracellular
Most K- extra or intra cellular?
intracellular
Daily intake requirement for most adults
at least 2000 mL
Sources of water intake
75% oral and 25% extracted from solid food
Routes for loss of fluid (3)
urine output, insensible loss (sweating and lungs), GI tract
If fluid replacement is done orally, how much is given in comparison to IV fluids?
1.5 times
How much urine output is needed to clear products of metabolism?
500-800 mL
What is normal urine output?
1 liter per day
What is “insensible” fluid loss?
sweating from skin (both water and electrolytes) and lungs (pure water)
Amount of fluid lost daily through the GI tract
about 250 mL/day
Amount of fluid lost daily through insensible loss?
about 600 mL
General reasons for giving IV fluids.
resuscitation (blood loss or dehydration) and hydration (post op, unable to eat/drink)
How long can a patient be with IV fluids alone when unable to eat?
a week
What is enteral nutrition?
through GI tract
What is TPN?
total parenteral nutrition through central line
What is PPN?
peripheral parenteral nutrition
Fluid that best mimics extracellular fluid.
Lactated Ringer’s
Percent of NaCl in Normal Saline
0.90%
Composition of D5 1/2 NS
dextrose 5% in .45% NaCl
Composition of D5 1/4 NS
dextrose 5% in .225 NaCl
Composition of D5W
dextrose 5% in Water
Composition of D50W
dextrose 50% in Water
Only fluid that contains in normal blood except for Mg
Lactated Ringer’s
What is the use for crystalloids?
volume resuscitation
What two fluids are used for volume resuscitation?
NS and LR
Which fluid used for volume resuscitation contains K, HCO3 and Ca?
LR
Fluid most commonly used for maintenance in adults?
D5 1/2 NS
If an adult needs fluid maintenance and also has been vomiting or on NG suction, what fluid is used?
D5 1/2 NS with added 20 meq KCl/L
What fluid is usually used for maintenance?
classically D5 1/4 NS
If you use D5W for resuscitation or maintenance, what will result (bad)?
low serum sodium leading to lethargy and then seizure or coma
Time for blood typing and then crossmatching.
Few minutes for blood type and about 1 hour to crossmatch
What is the best replacement for active hemorrhage?
Whole blood because it has RBC and plasma (clotting factors)
Why is there more immunologic reaction from whole blood than RBCs?
WBC
How much does one unit of RBC raise the Hct?
3%
What is normally used for replacement of blood due to the lack of whole blood available?
PRBC
Temperature whole blood and RBC should be before being used.
warm
Whole blood and RBC should be hung with what fluid?
NS
How many people are required to check patient ID and blood ID before transfusion?
2
When is FFP used?
for coag deficiency plus active bleeding (not for volume replacement alone)
How long does it take FFP to thaw?
about 30 minutes
How long can you keep thawed FFP for?
about 5 days
Normal platelet count
over 200,000
When are platelets given?
when the platelet count is less than 50,000 and patient is bleeding
A 6 pack of platelets can increase the platelet count by how much?
as much as 25,000
Describe storage of platelets
stored at room temp and good for 5 days
Lethal triad.
hypothermia, coagulopathy, and metabolic acidosis
Ratio of RBC to FFP that should be used in trauma requiring massive transfusion.
1:01 AM
There is an increased risk of this condition with 1:1 RBC:FFP
ARDS
What is albumin used for?
volume expansion and albumin deficiency (due to burns, liver disease, nephrotic syndrome)
What is the purpose of hypertonic saline (3-5% NaCl) in hemorrhage?
to reduce the volume of fluids to maintain BP---the high Na concentration will draw fluid into the intravascular space
Purpose of hypertonic solution in head injury?
increases BP and CPP, and decreases ICP
Why is there less risk of ARDS with use of hypertonic solution for head injury than albumin?
inhibits PMN activation
What does hypertonic solution do to tissue swelling?
decreases it b/c it draws the interstitial fluid into the intravascular space
Negative S.E. caused by use of hypertonic saline.
hypernatremia----thirst
IV maintenance rate for 10 Kg child
40 ml/hr
IV maintenance rate for 20 kg child
60 ml/hr
IV maintenance rate for 30 kg child
70 ml/hr
In a dehydrated or hypovolemic child, what size fluid bolus can you start with?
20 ml/kg NS or RL (can repeat)
IV maintenance rate for adults
100 ml/hr or more
Size of fluid bolus to use in dehydrated or hypovolemic adult
500 mL to 1 L NS or RL (repeated PRN)
KVO
Keep Vein Open
TKO
To Keep Open
Use for heparin or saline lock
for intermittent meds
How do you keep saline or heparin lock line from clotting?
irrigate periodically
NPO
nil per os (nothing by mouth)
2 general reasons why patient needs IV fluids at least maintenance rate.
NPO for more than 12 hours or if there are continuing fluid losses
Most common method for fluids.
Peripheral line
Use for butterfly
to draw blood or give meds
Site for intra osseous needle insertion in child
tibia and femur
Site for intra osseous needle insertion in adult
tibia, sternum, humerus
Contraindication for intra osseous
fracture- causes compartment syndrome when the fluid leaks out of bone into the soft tissue
Two vein locations MC used for central line
subclavian and IJ catheter
What is a PIC?
peripherally inserted central line
What are central lines used for?
to administer fluids, blood, antibiotics, and hyperalimentation (TPN)
Common complications of central lines
pneumothorax, hematoma, infection
What is the Seldinger technique?
wire is inserted through needle and the needle then pulled out of vein leaving the wire; catheter is threaded over the wire and the wire pulled out leaving the catheter in place
What is a tunneled catheter?
central line with ports out of the skin that is used for hyperalimentation, chemo, and long term Ab
What is implanted catheter?
reservoir is completely under the skin and a special curved needed is used to access the reservoir
What complication is avoided by using a PICC?
pneumothorax
Drawback to PICC
more easily infected, can break off, embolize, cause air embolus
Complications of femoral vein catheter
infection and DVT
Is the femoral vein medial or lateral to the artery?
medial to the artery
How many umbilical veins are in the umbilical cord?
one
How many umbilical arteries are in the umbilical cord?
two
Where is arterial line usually inserted?
radial artery
What are arterial lines connected to?
pressure transducer (they are nor fluid replacement)
What is the purpose of a blood filter when giving blood?
to catch clots
Low tech way to know if someone is dehydrated?
skin turgor, HR, BP, tilts
Medium tech ways to know if someone has enough fluid?
hematocrit, measure I and O, urine specific gravity
Is specific gravity of urine increased or decreased when dehydrated?
increased when dehydrated
Higher tech ways to determine is there is enough fluid?
CVP, wedge pressure
What signs on physical exam will tell you that a patient needs less than maintenance fluids?
pedal or presacral edema, ascites, anasarca, S3 gallop, JVD
Clues in history that tell you a person has volume excess
fluid retention or weight gain over past few days, symptoms of CHF
Clues in history that tell you a person has volume deficit
vomiting, diarrhea, fever, profuse sweating, thirst, weight loss in past few days
Physical exam signs that tell you a patient may have volume deficit?
skin turgor, mucosal hydration , tachycardia, orthostatic hypotension, oliguria
How do you treat oliguria in a person with volume deficit?
with fluids, not a diuretic
What is the Hematocrit a measure of?
% of RBC in blood compared to plasma
If there is no loss or gain of RBC and you add fluids, what happens to the hematocrit?
it decreases (hemodilution)
If there is no loss or gain of RBC and you lose fluids, what happens to the hematocrit?
it increases (called hemoconcentration--dehydration)
Hemolyzed blood may have high serum what?
K
What is seen on EKG because of hyperkalemia?
peaked T waves and eventually PVCs
What is low urine output in surgery patient considered as until proven otherwise?
hypovolemia
What urine output should be expected post surgery from an adult?
.5 ml/kg/hr
What urine output should be expected post surgery from a child?
expect 1 ml/kg/hr
What urine output should be expected post surgery from an infant?
expect 2 ml/kg/hr
Too ways to measure urine output?
hat in toilet, collection bag from bladder catheter
Where does the CVP line end?
in SVC or right atrium
If CVP and wedge pressure are low when measuring with Swan-Ganz, what is the patient’s fluid status?
Probably needs more fluid
What is the pulmonary artery catheter measuring?
CVP, PA pressure, wedge pressure, and CO
Purpose of feeding tube vs. NG tube
Feeding tube to insert feeding; NG tube on low suction to drain the stomach
What is the purpose of letting tube feedings drain in with gravity rather than pushing them in?
minimizes aspiration
Contraindication for NG tube
nasal injury, nasal obstruction, cribriform plate injury
Indication for NG tube
persistent vomiting, bowel obstruction, surgery
Function of Toomey Syringe
inject air into the NG tube and sump to keep open
What is Anti-reflux valve used for?
used on sump with NG tube to keep fluid from leaking out while allowing air to go in
Common causes of hypokalemia
diuretics and NG suction (loss of HCl from stomach)
How do you prevent hypokalemia?
Add KCl to each liter of fluids