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NURS 3715- Clinical Integration III- Week 3 Exam
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NURS 3715- Clinical Integration III- Week 3 ExamWhat are the three processes of oxygenation?
Ventilation, perfusion, diffusion
What is ventilation?
The movement of gas in and out of the lungs.
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What is perfusion?
Blood flow to the lungs and tissues.
What is diffusion?
The movement of oxygen and carbon dioxide between the alveoli and the capillaries of
the bodies tissues.
What is a safety alert with oxygen?
Highly combustable
What does eupnea mean?
Normal, healthy breathing
What is bradypnea?
Slow breathing
What is tachypnea?
Rapid breathing
,What is dyspnea?
Shortness of breath
What is hypoventilation?
Slow and shallow breathing
What is hyperventilation?
Increased rate and depth of breathing
What is atelectasis?
Collapsed lung
What is hypoxia?
Lack of oxygen reaching the tissues.
What is hypoxemia?
Low oxygen in blood
What are the factors effecting oxygenation?
1. Environment: humidity, temp, pollution
2. Allergens: airways become edematous and leads to bronchospasm
3. Physical growth: scoliosis, obesity, pregnancy
4. Oxygen- carrying capactity
5. Drugs: narcotics depress the CNS
6. Positioning: upright is best (this is very important).
, What is Sp02 and Sa02?
Yet both are oxygen saturations in arterial blood yet have different ways of measuring.
Sp02 is measured by pulse ox, Sa02 is measured using arterial blood gas.
What is the preferred method of oxygen delivery?
Nasal prongs
What concentrations do nasal prongs deliver?
24-45% at flow rates between 1-6LPM. 6-15L highflown prongs with humidity. This
oxygen is humidified.
- every 1L= 21% (room air) +3-4%
- 02 at 1 litre np= 24-25% oxygen
- 02 at 2 litres np- 27-29% oxygen
How does the face mask Fit onto the patient?
Over the nose and mouth with open side ports allowing access for air to enter and dilute
the oxygen as well as allowing the escape of carbon dioxide. It should mould around the
face.
What percentage of oxygen concentration does the face mask deliver?
40-60% at flow rates between 5-8 LPM.
What is the Venturi mask?
An air entrainment mask which delivers a known oxygen concentration to patients on
controlled oxygen therapy. These are very accurate but require a high oxygen flow rate.
Because of this, each mask color delivers a different oxygen concentration.
What are the oxygen concentration levels with the Venturi mask?
Concentrations of 24, 28,31,35, 40, and 50% oxygen with flows of 4-10 litres.
What is a non-rebreather mask?
Assists in the delivery of oxygen during emergency situations. It consists of an oxygen
reservoir bag and one way valves purposed to minimize or avoid entrainment of room
air. It covers both your nose and mouth, and the one way valves block exhaled air from
re-entering into the oxygen reservoir.
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