Lab Sims Flashcards
What does hemoglobin measure?
the oxygen carrying capacity
What does hematocrit measure?
it is a calculated value
hemoglobin x 3
How is a reticulocyte count ordered?
immature red blood cells
it must be ordered seperately
What causes increased leukocytosis?
bacterial infection, vomiting, stress, steroid use
What causes reduce leukopenia?
viral infection, chronic disease
major extracellular cation
sodium
major intracellular cation
potassium
sodium less than 120 carries high risk of ?
seizures
as sodium is reabsorbed what is lost?
potassium
Does magnesium needed be ordred seperately?
yes, not part of the BMP
Magnesium is bestfriends with?
Calcium and Potassium (K)
one affects the other
Chloride is a?
extracellular anion
Hypochloremia and hyperchloremia occur with what?
parallel shifts with Na or HCO3 levels
The CO2 content is an indirect measure of?
HCO3 anion
bestfriends
How to calculate an anion gap?
(sodium + potassim) - (chloride+ bicarbonate)
AG results from what?
the small amounts of anions in he blood that are not normally measured
AG is healpful in identifying the causes of?
metabolic acidosis
List out MUDPILES
If both BUN and creatinine are elevated that means?
kidney failure
BUN alone is not an accurate measure of?
kidney function
What does an increased or decreased creatinine mean?
increased= decreased GFR
decreased= increased GFR
Calcium has an inverse relationsip with?
phosphorus via PTH stimulation
enemies
What is included in a BMP?
NA
Cl
BUN
K
HCO3
Cr
Glucose
What has high rates of false positives?
D-dimer
When should you use a D-dimer?
only when you suspect no PE and need to confirm
