NUR195 Final Exam Prep | Questions And Answers Latest {2024- 2025} A+ Graded | 100%
Verified
hypoxia - inadequate oxygen delivery to the lungs or body tissues from circulation, hemoglobin, or toxic
substances
hypoxemia - decrease amount in oxygen in the blood
a SaO2 of 90 indicates ______________ hypoxemia - mild
At SaO2 of 90%,
PaO2 =
and requires - 60 mmHg
immediate intervention with oxygen therapy
effects of chronic hypoxia - fatigue, drowsiness, inattentiveness, apathy, delayed
reaction time
chronic hypoxia s/s - enlarged heart, clubbing, anorexia, constipation, decreased urinary output,
decrease libido, weakness of extremity muscles, muscle pain
acute hypoxia effects, s/s - Restlessness, disorientation, confusion, impaired judgement,
hyperventilation, air hunger, circulatory changes (tachycardia-bradycardia)
Assessments for oxygenation - ABG
pulse ox (o2 sat)
physical assessment findings
Low flow oxygen delivery systems - -Nasal cannula (>4L/min use humidification)
-Simple face mask
, -Partial rebreather mask
-Nonrebreather mask
High flow oxygen delivery systems - -Venturi mask
-transtracheal catheter
-aerosol masks
-mechanical ventilators
-face tent
A physician orders a patient to receive oxygen 3L/minute via nasal cannula. When calculating the
fraction of inspired oxygen (FiO2) for this setting, which of the following would be correct?
28%
32%
36%
40%
Calculate:
___ L x 4 + 20 = FiO2 or concentration of oxygen; each additional L of flow is + 4% - Answer: B. 32%
FiO2 is essentially the percent of oxygen being delivered by the oxygen-delivery system
An order is received to place a patient on a Venturi mask of 40%. Which explanation best fits this oxygen
delivery device?
Different masks are used for each desired oxygen concentration.
An air entrainment device blends the oxygen with room air.
One set oxygen flow rate is used with this mask.
With a venture, there is variable oxygen delivery. - One set oxygen flow rate is used with this mask.
Obstructive sleep apnea - partial or complete upper airway obstruction during sleep with repeated
periods of apnea, brief arousals resulting in a fragmented sleep.
Verified
hypoxia - inadequate oxygen delivery to the lungs or body tissues from circulation, hemoglobin, or toxic
substances
hypoxemia - decrease amount in oxygen in the blood
a SaO2 of 90 indicates ______________ hypoxemia - mild
At SaO2 of 90%,
PaO2 =
and requires - 60 mmHg
immediate intervention with oxygen therapy
effects of chronic hypoxia - fatigue, drowsiness, inattentiveness, apathy, delayed
reaction time
chronic hypoxia s/s - enlarged heart, clubbing, anorexia, constipation, decreased urinary output,
decrease libido, weakness of extremity muscles, muscle pain
acute hypoxia effects, s/s - Restlessness, disorientation, confusion, impaired judgement,
hyperventilation, air hunger, circulatory changes (tachycardia-bradycardia)
Assessments for oxygenation - ABG
pulse ox (o2 sat)
physical assessment findings
Low flow oxygen delivery systems - -Nasal cannula (>4L/min use humidification)
-Simple face mask
, -Partial rebreather mask
-Nonrebreather mask
High flow oxygen delivery systems - -Venturi mask
-transtracheal catheter
-aerosol masks
-mechanical ventilators
-face tent
A physician orders a patient to receive oxygen 3L/minute via nasal cannula. When calculating the
fraction of inspired oxygen (FiO2) for this setting, which of the following would be correct?
28%
32%
36%
40%
Calculate:
___ L x 4 + 20 = FiO2 or concentration of oxygen; each additional L of flow is + 4% - Answer: B. 32%
FiO2 is essentially the percent of oxygen being delivered by the oxygen-delivery system
An order is received to place a patient on a Venturi mask of 40%. Which explanation best fits this oxygen
delivery device?
Different masks are used for each desired oxygen concentration.
An air entrainment device blends the oxygen with room air.
One set oxygen flow rate is used with this mask.
With a venture, there is variable oxygen delivery. - One set oxygen flow rate is used with this mask.
Obstructive sleep apnea - partial or complete upper airway obstruction during sleep with repeated
periods of apnea, brief arousals resulting in a fragmented sleep.
