Care of Oxygenation

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  • Created by: Beckyrose
  • Created on: 19-02-14 07:44
What is 'Strarlings Law'?
In relation to cardiovascular system: stretch is proportionally RT strength of contraction
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What is the sequence of respiration?
Inhalation -> alveoli -> surrounding caps -> bloodstream -> CO2 -> caps -> exhaled
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What are the 3 steps in Oxygenation?
1. Ventilation, 2. Diffusion, 3. Perfusion
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What do chemorecpetors in the brain do?
They respond to levels in CO2 and O2
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What factors may affect Oxygenation?
< O2 carry capicity (anemia), < inspired O2 conc (airway obstruction, asthma, shock), > metabolic rate (fever, preg, exercise), lifestyle (smoking, anxiety, meds)
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What is 'Apnoea'?
Cessation of breathing during sleep
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What does 'Eupnoea' mean?
Normal relaxed breathing
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What does 'Dyspnoea' mean?
Difficultly breathing
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What does 'Orthopnoea' mean?
Shortness of breath lying flat - must sit upright for sleeping
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What is 'Hypoxia'?
deficiency in oxygen reaching the tissues
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What can be the causes for 'hypoxia'?
< hemoglobin = < O2 carrying capacity, < conc of inspired O2 (e.g high altitudes) < diffusion of O2 from alveoli (pneumonia), inability for tissues to extract O2 from blood (COPD), impaired ventilation (trauma)
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What are the signs and symptoms of 'hypoxia'?
Tachycardia (High HR), shallow resps, restlessness, light headedness, tripod position, use of accessory muscles, change in behaviour, cyanosis is late sign
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What is Peak Expiratory Flow (PFR) and what is it used for?
It measures the point of the highest flow during max expiration - provides a measurement of lung function, it measures the amount of air someone can breathe out and if amount is reduced it may indicate obstruction of the airways - asthma
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Why should the pt be sitting upright for the PFR?
To open up lungs and allow the pt to fully expand and exhale
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What is an Incentive Spirometer used for?
To promote healthy lungs while they are healing, teaches how to take big slow breaths, it opens up airways & stops muccus build up, for post op, COPD, lung diseas
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Other cards in this set

Card 2

Front

What is the sequence of respiration?

Back

Inhalation -> alveoli -> surrounding caps -> bloodstream -> CO2 -> caps -> exhaled

Card 3

Front

What are the 3 steps in Oxygenation?

Back

Preview of the front of card 3

Card 4

Front

What do chemorecpetors in the brain do?

Back

Preview of the front of card 4

Card 5

Front

What factors may affect Oxygenation?

Back

Preview of the front of card 5
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