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NR 224 Quiz 3 (Answered) 100% Correct, 176 Q&A. Latest Fall 2024/2025.
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NR 224 Quiz 3 (Answered) 100% Correct, 176 Q&A. Latest Fall 2024/2025.
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NR 224 Quiz 3 (Answered) 100%Correct, 176 Q&A. Latest Fall
2024/2025.
What are some factors impacting oxygenation?
-Physiological factors
- Developmental factors
- Lifestyle factors
- Environmental factors
What are some physiological factors that impact oxygenation
- anemia
- Hypovolemia
- Fever
- Muscular dystrophy
- Increased metabolic rate
- Chest wall movement
What are two physiological changes that impact chest wall movement?
- pregnancy
- obesity
What are some alterations to respiratory functions?
- Hypoventilation
- Hyperventilation
- Hypoxia
What is the definition of hypoventilation?
- occurs when alveolar ventilation is inadequate to meet O2 demands
- occurs when alveolar ventilation is not sufficient enough to eliminate proper CO2 amounts
What is retained during hypoventilation?
- CO2
What does hypoventilation cause?
respiratory acidosis
What is the definition of hyperventilation?
- Lung removes CO2 faster than it is produced via cellular metabolism
,What is hyperventilation caused by?
- severe anxiety
- infection
- drugs
- acid-base imbalance
What are some signs / symptoms of hyperventilation?
- Rapid respiration
- sighing breaths
- numbness / tingling in hands/ feet
- light headedness
- loss of consciousness
What is the definition of hypoxia?
- inadequate tissue oxygenation at the cellular level.
What does hypoxia result from?
- deficiency in O2 delivery
- deficiency of O2 utilization at a cellular level
What can cause hypoxia to occur?
- decreased level of hemoglobin & lowered O2 carrying capacity of blood
- diminished concentration of inspired O2 at higher altitudes
- inability of tissue extraction O2 from the blood (cyanide poisoning)
- decreased diffusion of O2 from the alveoli to the blood (pneumonia)
- poor tissue perfusion w/ oxygenated blood
- impaired ventilation
What sickness / disease can cause hypoxia to occur?
- pneumonia
What physiological changes to the body can cause hypoxia?
- cyanide poisoning
- shock
- fractured ribs
- Chest trauma
What are some early signs and symptoms hypoxia?
- restlessness
- apprehension
- decreased level of consciousness (LOC)
- Dizziness
- Behavior changes
, What are some early vital sign changes with hypoxia?
- Blood pressure elevated (unless it is caused by shock)
How does shock impact hypoxia related to Blood pressure?
- Does not increase BP in early signs of blood pressure
What are some late signs and symptoms of hypoxia?
- Cyanosis
- Respiratory rate decreases
What are the two locations you can observe cyanosis in patients with hypoxia?
- Central cyanosis
- Peripheral cyanosis
Where can you see central cyanosis in clients with hypoxia?
- tongue
- soft palate
- Conjunctiva
Where can you peripheral cyanosis in clients with hypoxia?
- Lower extremities
- upper extremities
- nail beds
- earlobes
What is hypoxia a result of ?
- Constriction
- stagnant blood flow
What are some factors impacting oxygenation?
- Amount of dissolved O2 in plasma
- Amount of hemoglobin
- Ability of hemoglobin to bind with O2
What vital signs are observed in the late stages of hypoxia?
- respiratory rate decreases
What should a nurse assess during a physical examination of the lungs?
- assess accessory muscle usage
- assess clavicle elevation during respiration
What does one utilize percussion for when assessing the lungs?
- detects presence of abnormal fluid / air in lungs
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