Quiz #1 prep Flashcards
Intracellular fluid makes up how much of our body weight?
40%
What major cation and anions are outside the cell?
cation - Na+ is most
anion - Cl- is most
Ca++, HCO-3, and some proteins are also
What major cations and anions are inside the cell?
cation - K+ is most abundant
anion - PO4 and organic anions are most abundant
Mg++ and some proteins are also
Clinical manifestations of fluid imbalances are?
fluid volume deficit like loss of blood, loss of plasma, loss of body fluids.
symptoms - decr. cardiac output, decr. BP, incr. HR, orthostatic hypotension
Orthostatic hypotension is defined by what drop in BP?
decr. BP readings of 20/10 change
What is testing skin turgor?
Turgor is measured by pinching the skin and measuring the time it takes for it to return to its original contour. If longer than 3 sec compared to baseline, turgor is diminished.
Normal range for HCO3-?
22-26 mEq/liter
What major organs regulate pH?
lungs, kidneys, bone
How can lungs help regulate pH?
Lungs can readjust acid quickly by breathing of CO2 and leaving H20
How can kidneys help regulate pH?
don’t act fast but they can absorb or re-generate HCO3-
What happens when partial pressure of CO2 (PCO2) increases?
there is more H2CO3 formed
What is normal ranges for PaO2 and PaCO2?
PaO2 = 80-100 mm Hg PaCO2 = 35-45 mm Hg
What is normal range for blood pH?
pH = 7.35 - 7.45
How to tell if a person is in respiratory or metabolic acidosis or alkalosis?
Look at paCO2 values, if person is in respiratory acidosis PaCO2 will be above 45 mm Hg but if metabolic acidosis the persons PaCO2 will be normal or slightly lower. If person is in respiratory aklalosis the persons PaCO2 will be lower than 35 mm Hg but if in metabolic alkalosis the persons PaCO2 will be normal or slightly higher.
What is FiO2 and what is normal with breathing?
FiO2 is the fraction of O2 we breathe in from air, normal is 21% FiO2 from air.
