A 58-year-old man is admitted to the critical care unit with upper gastrointestinal
bleeding. He has a history of chronic renal failure. When one is administering antacids,
it is important to remember to avoid:
A.
magnesium-containing antacids.
B.
phosphate-binding antacids.
C.
,calcium-containing antacids.
D.
histamine2 receptor antagonists.
Give this one a try later!
magnesium-containing antacids.
Magnesium-containing antacids can lead to magnesium intoxication in the
patient with renal failure.
The physician has prescribed mannitol (Osmitrol) for a patient with intracranial
hypertension. Which of the following is an important consideration when
administering mannitol (Osmitrol)?
A.
The drug must be protected from light.
B.
The drug must be administered through an in-line filter.
C.
The drug must be administered into a central venous catheter.
D.
The drug must be refrigerated.
Give this one a try later!
The drug must be administered through an in-line filter.
Mannitol may crystallize out of solution if exposed to low temperatures. If
crystals are observed, the solution should be warmed to dissolve them and
then the solution should be returned to room temperature prior to use.
Because there is rarely time for this process in neurologic patients in crisis,
another bottle should be requested. Also, a filter needle should be used to
, draw up mannitol from a vial, and mannitol solution must be given through
an in-line filter because there are likely crystals that cannot be seen.
What effect does oxygen have on pulmonary vasculature? What efect does
hypoxemia have??
Give this one a try later!
o2 is a potent vasodilator
hypoxemia will cause vasoconstriction
what is the action of potassium in motility?
Give this one a try later!
hyper= hypermotility
hypo=risk for ileus/hypomotility
A 46-year-old woman is admitted to the critical care unit with acute respiratory failure
as a result of pneumonia.
Vital Signs
Blood pressure 140/88 mm Hg
Heart rate 108 beats/min
Respiratory rate 26 breaths/min
Temperature 39.8° C (103.8° F)
Arterial Blood Gases
pH 7.29
PaCO2 54 mm Hg
, HCO3 24 mEq/L
PaO2 60 mm Hg
What effect would these alterations have on the oxyhemoglobin curve and oxygen
saturation?
A.
A shift to the right and arterial oxygen saturation (SaO2) greater than 90% for the
PaO2 of 60 mm Hg
B.
A shift to the left and SaO2 greater than 90% for the PaO2 of 60 mm Hg
C.
A shift to the left and SaO2 less than 90% for the PaO2 of 60 mm Hg
D.
A shift to the right and SaO2 less than 90% for the PaO2 of 60 mm Hg
Give this one a try later!
This patient has hyperthermia and acidosis. Both of these cause a shift in
the oxyhemoglobin dissociation curve to the right. Shift to the right causes
a lower saturation for a given PaO2 because of a lower affinity between
oxygen and hemoglobin. Though a PaO2 of 60 mm Hg usually is associated
with an oxygen saturation of 90%, this patient would have a saturation of
less than 90% for the PaO2 of 60 mm Hg. When the curve is shifted to the
right, affinity is decreased. This means that the pickup of oxygen at the lung
level is impaired but drop-off at the tissue level is improved. A shift of the
curve to the left improves pickup of oxygen at the lung level but impairs
drop-off at the tissue level.
How does heparin inhibit clotting
Give this one a try later!
bleeding. He has a history of chronic renal failure. When one is administering antacids,
it is important to remember to avoid:
A.
magnesium-containing antacids.
B.
phosphate-binding antacids.
C.
,calcium-containing antacids.
D.
histamine2 receptor antagonists.
Give this one a try later!
magnesium-containing antacids.
Magnesium-containing antacids can lead to magnesium intoxication in the
patient with renal failure.
The physician has prescribed mannitol (Osmitrol) for a patient with intracranial
hypertension. Which of the following is an important consideration when
administering mannitol (Osmitrol)?
A.
The drug must be protected from light.
B.
The drug must be administered through an in-line filter.
C.
The drug must be administered into a central venous catheter.
D.
The drug must be refrigerated.
Give this one a try later!
The drug must be administered through an in-line filter.
Mannitol may crystallize out of solution if exposed to low temperatures. If
crystals are observed, the solution should be warmed to dissolve them and
then the solution should be returned to room temperature prior to use.
Because there is rarely time for this process in neurologic patients in crisis,
another bottle should be requested. Also, a filter needle should be used to
, draw up mannitol from a vial, and mannitol solution must be given through
an in-line filter because there are likely crystals that cannot be seen.
What effect does oxygen have on pulmonary vasculature? What efect does
hypoxemia have??
Give this one a try later!
o2 is a potent vasodilator
hypoxemia will cause vasoconstriction
what is the action of potassium in motility?
Give this one a try later!
hyper= hypermotility
hypo=risk for ileus/hypomotility
A 46-year-old woman is admitted to the critical care unit with acute respiratory failure
as a result of pneumonia.
Vital Signs
Blood pressure 140/88 mm Hg
Heart rate 108 beats/min
Respiratory rate 26 breaths/min
Temperature 39.8° C (103.8° F)
Arterial Blood Gases
pH 7.29
PaCO2 54 mm Hg
, HCO3 24 mEq/L
PaO2 60 mm Hg
What effect would these alterations have on the oxyhemoglobin curve and oxygen
saturation?
A.
A shift to the right and arterial oxygen saturation (SaO2) greater than 90% for the
PaO2 of 60 mm Hg
B.
A shift to the left and SaO2 greater than 90% for the PaO2 of 60 mm Hg
C.
A shift to the left and SaO2 less than 90% for the PaO2 of 60 mm Hg
D.
A shift to the right and SaO2 less than 90% for the PaO2 of 60 mm Hg
Give this one a try later!
This patient has hyperthermia and acidosis. Both of these cause a shift in
the oxyhemoglobin dissociation curve to the right. Shift to the right causes
a lower saturation for a given PaO2 because of a lower affinity between
oxygen and hemoglobin. Though a PaO2 of 60 mm Hg usually is associated
with an oxygen saturation of 90%, this patient would have a saturation of
less than 90% for the PaO2 of 60 mm Hg. When the curve is shifted to the
right, affinity is decreased. This means that the pickup of oxygen at the lung
level is impaired but drop-off at the tissue level is improved. A shift of the
curve to the left improves pickup of oxygen at the lung level but impairs
drop-off at the tissue level.
How does heparin inhibit clotting
Give this one a try later!
