QUESTIONS AND ANSWERS |
100% PASS
What factors contribute to the work of breathing - 🧠 ANSWER ✔✔The effort
required to expand and contract the lungs.
Inspiration and expiration
Surfactant
Atelectasis
Compliance and airway resistance
,The amount of energy expended on breathing depends on? - 🧠 ANSWER
✔✔1-the rate and depth of breathing, the ease with which the lungs can be
expanded (compliance)
2-airway resistance.
Inspiration - 🧠 ANSWER ✔✔an active process, stimulated by chemical
receptors in the aorta.
Expiration - 🧠 ANSWER ✔✔passive process that depends on the elastic
recoil properties of the lungs, requiring little or no muscle work
Surfactant - 🧠 ANSWER ✔✔a chemical produced in the lungs to maintain
the surface tension of the alveoli and keep them from collapsing
Atelectasis - 🧠 ANSWER ✔✔a collapse of the alveoli that prevents normal
exchange of oxygen and carbon dioxide.
What can cause atelectasis? - 🧠 ANSWER ✔✔1-lungs collapse-can be
caused by puncture of lungs
2-asthma that irrigates airways,
3-pneumonia,
,4-tb,
4-pneomothorax,
5-hemothorax,
6-surgery due to anesthesias
7-premature birth before 34 weeks
What are the Accessory muscles - 🧠 ANSWER ✔✔-overuse of the
diaphragm can increase lung volume during inspiration
-Traps
-sternocleidomastoid
-intern/external intercostals
Respiratory compliance - 🧠 ANSWER ✔✔normal elasticity during breathing
decreased compliance - 🧠 ANSWER ✔✔occurs in asthma and other
respiratory issues, you don't have the same elasticity
Impact of increased airway resistance and decreased lung compliance - 🧠
ANSWER ✔✔-sob
-reduced perfusion
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3
, -ineffective gas exchange
-increase RR
-increase in respiratory metabolism due to decreased oxygen levels
Decreased perfusion leads to: - 🧠 ANSWER ✔✔Brain-Stroke
Kidney-renal failure
Liver-failure
Heart-MI
Prolonged use of the accessory muscles - 🧠 ANSWER ✔✔does not
promote effective ventilation and causes fatigue.
Accessory muscles of respiration can - 🧠 ANSWER ✔✔increase lung
volume during inspiration
During assessment of accessory muscles check for - 🧠 ANSWER
✔✔observe for elevation of the patient's clavicles during inspiration
Elevation of clavicle indicates? - 🧠 ANSWER ✔✔ventilatory fatigue
air hunger
decreased lung expansion.