Flashcards in deck 3 Deck (15)
how often should an IV catheter be flushed?
every 4-6 hours
what is the maintenance fluid requirement? ...ml/kg/24hrs
what do isotonic fluids have the same tonicity as?
an increase in pcv can indicate what?
what is the normal fluid losses through urine per day?
the body has 3 response mechanisms to hypovolaemia, what are they?
vasoconstriction, aldosterone retains sodium, release of rbc from bone marrow
magnesium is vital in what?
vital to normal cardiac and neuromuscular function
almost all of potassium in the body is found where?
any condition that is likely to cause polyuria is likey to decrease what?
potassium levels, as it is poorly conserved by the kidneys
vomiting and diarrhoea can lead to a decrease in?
HCO3- bicarbonate, it is found largely in the GI tract
if hydrostatis pressure exceeds the oncotic pressure, the fluid what?
moves out of the space
if oncotic pressure exceeds the hypostatic pressure, fluid what?
moves into the space
what is osmolality?
a measure of concentration of the smaller molecules in the fluid, such as electrolytes, glucose and urea
systolic blood pressure is obtained when?
artieries are at their highest blood pressure, at the peak of ventricular contraction