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CCBC Nursing 160 Exam Four Prep Questions And Correct Answers
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CCBC Nursing 160 Exam Four Prep QuestionsAnd Correct Answers
What is Oxygenation? - Answer The process that maintains oxygen levels necessary for
the survival of living cells.
*The body requires oxygen for ENERGY!*
How much of the air that we breathe is made up of oxygen? - Answer 21% air.
*But oxygenation is not JUST the air we breathe! Also the level of exchange at the alveoli
and at the level of the tissues.
What is the waste product of oxygenation? -Answer CO2!
What is hypoxemia? -Answer Abnormally low levels of oxygen in the blood.
What is hypoxia? -Answer A low level or inadequate amount of oxygen to all body
tissues.
What is oxygen delivery? -Answer The amount of oxygen that is delivered from the lungs
to the tissues of the body.
What is oxygen consumption? - Answer The rate at which oxygen is taken from the blood
to be used by the tissues.
Can changes in systemic oxygenation effect other systems of the body? - Answer YES!
Changes in O2 can effect EVERY body system! Ex:
, 1. Homeostasis: acid-base balance altered-should always have 20 bicarbs to every 1
carbonic acid.
2. Perfusion: need good blood supply to deliver O2 to the tissues.
3. Metabolism: changes in O2 can increase metabolic demand, thus leading to
compensation.
What is involved in the physiology of Oxygenation? - Answer 1. Oxygen transport: occurs
because we breathe! We take in oxygen through respirations.
2. Respiration: the act of respiring; inhalation and exhalation of air;
breathing---GAS EXCHANGE.
3. Ventilation: the movement of air between the
environment and the lungs through inhalation and exhalation [basically the same as
respiration--the two go hand in hand].
4. Diffusion and Perfusion: O2 diffuses across alveoli and membranes.
5. Gas exchange: occuring at the level of the alveoli!
What are the different forms of *Protectants* that can be utilized in Oxygenation? -
Question 1. *Filtration*: ex, cilia catch debris and irritants from blocking the airway.
2.*Warmth and Humidification*: the upper airway-warms and humidifies. Patients with
trachs don't have this ability which can lead to irritation to their respiratory system.
3.*Epiglottis*: protects the trachea against aspiration.
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