hydrostatic pressure
Give this one a try later!
the pressure within a blood vessel that tends to push water out of the
vessel. "pushing pressure"
tissue-to-blood (T to B) fluid shift
, Give this one a try later!
water is pathologically LOST by the body, so that there is increased
concentration (osmolality) of the plasma space (blood)
S&S caused by T-to-B fluid shift:
a. think "dehydration;" in nursespeak, we would think of this state as a "fluid
volume deficit."
b. as tissue cells have their water "pulled out" into the vascular system,
which is now more concentrated than the tissues (CONCENTRATION
CALLS), the tissues eventually show dehydration all over the body in the
following ways:
1) dry mucus membranes
2) poor skin turgor -- skin loose, "tents" when pinched, won't "snap back."
3) sunken eyes
4) sunken fontanels in babies
5) diminished urinary output (oliguria) & also urine concentration increases.
6) sometimes low BP (blood pressure) if dehydration bad enough
7) acute CNS (central nervous system) changes related to dehydrated brain
cells-- restlessness, confusion, unconsciousness, convulsions.
c. if we did lab work, we would see a high serum osmolality (we would
consider this patient's blood to be hyperosmolar (hypertonic).
rule of osmosis
Give this one a try later!
water will always want to move from a more dilute compartment to a more
concentrated compartment—ie, from a compartment of less % of solutes to
one with greater % of solutes (the body wants to return to having the
compartments equally concentrated.)
Hypertonic (and/or hyperosmolar)
Give this one a try later!
the pressure within a blood vessel that tends to push water out of the
vessel. "pushing pressure"
tissue-to-blood (T to B) fluid shift
, Give this one a try later!
water is pathologically LOST by the body, so that there is increased
concentration (osmolality) of the plasma space (blood)
S&S caused by T-to-B fluid shift:
a. think "dehydration;" in nursespeak, we would think of this state as a "fluid
volume deficit."
b. as tissue cells have their water "pulled out" into the vascular system,
which is now more concentrated than the tissues (CONCENTRATION
CALLS), the tissues eventually show dehydration all over the body in the
following ways:
1) dry mucus membranes
2) poor skin turgor -- skin loose, "tents" when pinched, won't "snap back."
3) sunken eyes
4) sunken fontanels in babies
5) diminished urinary output (oliguria) & also urine concentration increases.
6) sometimes low BP (blood pressure) if dehydration bad enough
7) acute CNS (central nervous system) changes related to dehydrated brain
cells-- restlessness, confusion, unconsciousness, convulsions.
c. if we did lab work, we would see a high serum osmolality (we would
consider this patient's blood to be hyperosmolar (hypertonic).
rule of osmosis
Give this one a try later!
water will always want to move from a more dilute compartment to a more
concentrated compartment—ie, from a compartment of less % of solutes to
one with greater % of solutes (the body wants to return to having the
compartments equally concentrated.)
Hypertonic (and/or hyperosmolar)
