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Exam (elaborations)

Nur195 – Questions & Answers (Correct And Verified)

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Nur195 – Questions & Answers (Correct And Verified)

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  • August 2, 2024
  • 6
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • NUR195
  • NUR195
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LeCrae
Nur195 – Questions & Answers (Correct And Verified)
Hypoxia Right Ans - inadequate oxygen delivery to the lungs or body tissues from circulation, hemoglobin, or toxic substances
Hypoxemia Right Ans - decrease amount in oxygen in the blood
A SaO2 of 90 indicates ______________ hypoxemia Right Ans - mild
At SaO2 of 90%,
PaO2 =
and requires Right Ans - 60 mmHg
immediate intervention with oxygen therapy
Effects of chronic hypoxia Right Ans - fatigue, drowsiness, inattentiveness, apathy, delayed
reaction time
Chronic hypoxia s/s Right Ans - enlarged heart, clubbing, anorexia, constipation, decreased urinary output, decrease libido, weakness of extremity muscles, muscle pain
Acute hypoxia effects, s/s Right Ans - Restlessness, disorientation, confusion, impaired judgement, hyperventilation, air hunger, circulatory changes (tachycardia-bradycardia)
Assessments for oxygenation Right Ans - ABG
pulse ox (o2 sat)
physical assessment findings
Low flow oxygen delivery systems Right Ans - -Nasal cannula (>4L/min use
humidification)
-Simple face mask
-Partial rebreather mask
-Nonrebreather mask
High flow oxygen delivery systems Right Ans - -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% Right Ans - 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. Right Ans - One set oxygen flow rate is used with this mask.
Obstructive sleep apnea Right Ans - partial or complete upper airway obstruction during sleep with repeated periods of apnea, brief arousals resulting in a fragmented sleep.
Which of the following clinical manifestations increase oxygen demand for a patient?
Anemia
Tachycardia
Elevated temperature
All of the above Right Ans - All of the above
Who are at risk for obstructive sleep apnea? Right Ans - male

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