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Terms in this set (122)
1. Oxygen content depends Ch2.
on which of the following? 1. a, d, e
a. Hemoglobin
concentration
b. Patient temperature
c. Dissolved oxygen
d. PaO2
e. PaCO2
2. Which of the following is Ch2
true of the arterial-venous 2. a, b, e
oxygen difference (A-V
DO2)? a. Depends on oxygen delivery.
a. Depends on oxygen b. Is reflected in circuit venous saturation with VA-
delivery. ECMO
b. Is reflected in circuit c. Can be decreased by increasing sweep gas flow
venous saturation with VA- d. Depends only on ECMO pump flow
ECMO e. May be decreased by cooling a patient
c. Can be decreased by
increasing sweep gas flow
d. Depends only on ECMO
pump flow
e. May be decreased by
cooling a patient
,3. Factors that increase Ch2
tissue unloading of oxygen B
include which of the
following?
a. An increase in pH
b. An increase in 2, 3
bisphosphoglycerate
c. A decrease in patient
temperature
d. A decrease in PCO2
4. Improved oxygen Ch2
delivery of a patient b, c (There is usually a limit to how much
receiving ECLS can occur increasing pump flow improves oxygen de- livery
with a. Young circuitb. because at some point the increase in recirculation that
Improvement in native lung occurs with increases in flow outweighs the
function.c. Increased pump improvement in forward flow.)
flow with venovenous
ECLS.
d. Increasing pump flow
above the rated flow of the
oxygenator
5. Carbon dioxide Ch 2, 5
clearance by the ECLS b, c, e
pump in influenced by a.
Pre-oxygenator
bicarbonate
concentrationb. Sweep gas
flowc. Membrane surface
area
d. Sweep gas O2
concentration e. Sweep gas
CO2
Which of the following is Ch 3, 1
NOT a direct determinant d
of oxygen delivery to the
tissues? a. Cardiac outputb.
Hemoglobinc. Arterial
oxygen saturation
d. Central venous pressure
,Ejection of blood from the Ch 3
heart is considered 2. b
afterload _________ and
preload _________. a.
Dependent ; dependentb.
Sensitive ; dependentc.
Sensitive ; sensitive
d. Dependent ; sensitive
Which of the following can Ch 3
be used as a tool to assess 3. d
adequacy of perfusion? a.
Tissue oximetryb. Serum
lactate concentrationc.
Venous oxygen saturation
d. All of the above
VA-ECMO increases Ch 3
afterload to the: a. Right 4. b
ventricleb. Left ventriclec.
Both
d. Neither
The cardiac output curve Ch 3
can be affected by 5. b
afterload, contractility and
heart rate. Assuming that
vascular resistance does
not change, cardiac output
is also related to:a.
Hemoglobinb. Central
venous pressure (CVP)
c. Vessel radius d. PaO2
, In order to safely insert the Ch 5, 1
venovenous cannulae, the B
surgical team wishes for her
platelet count to be above
30k/dL. What is the
appropriate dose and
modifications?a. 20 ml/kg
of irradiated platelets
should increase her platelet
count by 20,000/dLb. 10
ml/kg of irradiated
platelets should increase
her platelet count by
30,000/dL
c. 1 unit of irradiated
platelets should increase
her platelet count by
50,000/dLd. 10 ml/kg of
non-irradiated platelets
should increase her platelet
count by 10,000/dL
Which of the following is Ch 5, 2
the mechanism of a
irradiation performed on
cellular blood products? a.
Breaks DNA in leukocytes
so they cannot proliferate
in an immunocompromised
recipient
b. Kills cytomegalovirus
(CMV) so that it cannot
infect an
immunocompromised
recipient
c. Kills any bacteria in
platelet units since they are
at such high risk of being
contaminated
d. Removes cytokines
thereby preventing febrile
non-hemolytic transfusion
reactions