AMERICAN RED CROSS SET QUESTIONS AND
ANSWERS SURE A+
✔✔What is the capnography waveform a graphical representation of?
Select the correct answer to this question.
The movement of carbon dioxide through the respiratory system
The peak end-tidal carbon dioxide level
The movement of oxygen through the respiratory system
The movement of oxygen and carbon dioxide through the respiratory system - ✔✔1
✔✔15 The oxygen-hemoglobin dissociation curve depicts the relationship between the
partial pressure of oxygen (PaO2) and the:
Select the correct answer to this question.
Arterial oxygen content (CaO2)
Peripheral capillary oxygen saturation (SpO2)
Arterial oxygen saturation (SaO2)
Central venous oxygen saturation (ScvO2) - ✔✔3
✔✔When hemoglobin's affinity for oxygen is increased, oxygen binds to the hemoglobin
easily, but offloading is difficult. This is reflected on the oxygen-hemoglobin dissociation
curve as a shift to the _________. - ✔✔left
✔✔Respiratory baseline - ✔✔The phase on the capnography waveform representing
the beginning of exhalation.
During this phase, "dead space" air (i.e., air in the airways from the bronchioles to the
nasal cavity that does not contain carbon dioxide) is exhaled from the body.
✔✔Respiratory upstroke - ✔✔The phase on the capnography waveform representing
the exhalation of air containing carbon dioxide from the alveoli.
, epresenting air from the alveoli that contains carbon dioxide being exhaled from the
body. For most patients, the respiratory upstroke should be nearly vertical.
✔✔Inspiratory downslope - ✔✔The phase of the capnography waveform representing
inhalation.
uring this phase, inhalation occurs and the carbon dioxide is rapidly purged from the
airways and alveoli.
✔✔expiratory plateau - ✔✔During this phase, the last of the carbon dioxide-laden air
from the most distal alveoli is exhaled from the body. The ETCO2 value is measured at
the end of exhalation (point D), which represents the peak level.
✔✔In a 12-lead ECG, the four limb leads produce views in the frontal plane. What are
those views?
Select all correct options that apply.
V2
aVL
I
aVR
V3
II
III
aVF - ✔✔2,3,4,6,7,8
✔✔2 What parts of the heart's electrical conduction system play a role in ventricular
contraction?
Select all correct options that apply.
Purkinje fibers
Interventricular septum
Bundle of His
Bundle branches - ✔✔1,3,4
ANSWERS SURE A+
✔✔What is the capnography waveform a graphical representation of?
Select the correct answer to this question.
The movement of carbon dioxide through the respiratory system
The peak end-tidal carbon dioxide level
The movement of oxygen through the respiratory system
The movement of oxygen and carbon dioxide through the respiratory system - ✔✔1
✔✔15 The oxygen-hemoglobin dissociation curve depicts the relationship between the
partial pressure of oxygen (PaO2) and the:
Select the correct answer to this question.
Arterial oxygen content (CaO2)
Peripheral capillary oxygen saturation (SpO2)
Arterial oxygen saturation (SaO2)
Central venous oxygen saturation (ScvO2) - ✔✔3
✔✔When hemoglobin's affinity for oxygen is increased, oxygen binds to the hemoglobin
easily, but offloading is difficult. This is reflected on the oxygen-hemoglobin dissociation
curve as a shift to the _________. - ✔✔left
✔✔Respiratory baseline - ✔✔The phase on the capnography waveform representing
the beginning of exhalation.
During this phase, "dead space" air (i.e., air in the airways from the bronchioles to the
nasal cavity that does not contain carbon dioxide) is exhaled from the body.
✔✔Respiratory upstroke - ✔✔The phase on the capnography waveform representing
the exhalation of air containing carbon dioxide from the alveoli.
, epresenting air from the alveoli that contains carbon dioxide being exhaled from the
body. For most patients, the respiratory upstroke should be nearly vertical.
✔✔Inspiratory downslope - ✔✔The phase of the capnography waveform representing
inhalation.
uring this phase, inhalation occurs and the carbon dioxide is rapidly purged from the
airways and alveoli.
✔✔expiratory plateau - ✔✔During this phase, the last of the carbon dioxide-laden air
from the most distal alveoli is exhaled from the body. The ETCO2 value is measured at
the end of exhalation (point D), which represents the peak level.
✔✔In a 12-lead ECG, the four limb leads produce views in the frontal plane. What are
those views?
Select all correct options that apply.
V2
aVL
I
aVR
V3
II
III
aVF - ✔✔2,3,4,6,7,8
✔✔2 What parts of the heart's electrical conduction system play a role in ventricular
contraction?
Select all correct options that apply.
Purkinje fibers
Interventricular septum
Bundle of His
Bundle branches - ✔✔1,3,4
