Exam 3 Respiratory Flashcards
Tissue perfusion?
Once blood leaves heart, how gets to the rest of the body. Cardiac Output will increase tissue perfusion.
Pulm. perfusion
Blood going just to lungs… blood low in oxygen high in Carbon Dioxide.
Ventilation
Air moving in and out of alveolus.
VQ Ratio
V- ventilation
Q-perfusion
Normal VQ Ratio =
normal functioning alveolus and normal pulm capillary flow.
Dead Space VQ
When ventilation without perfusion, a dead space unit exists. Example: pulmonary embolus which prevents blood flow through the pulmonary capillary…
Shunt Unit VQ
when there is no ventilation to an alveolar unit but perfusion continues, a shunt unit exists, and unoxygenated blood continues to circulate. Can also be referred to as the “shunt effect.”
Diseases of lower respiratory tract?
Asthma
COPD
(Emphysema/chronic bronchitis)
Asthma
Hyper-responsive airway, thus “bronchoconstriction”…
AND
increase of inflammation in lungs.
COPD emphysema
Destruction of alveoli sacs…damages them, thus less gas exchange. Pink puffer (grapes). Compressed air ducts and collapsed alveoli.
COPD chronic bronchitis
Increase in MUCUS, narrows airway ewwww. Blue Bloater
Two goals for asthma:
- Terminate acute bronchospasm (quick relief)
2. Prevent or reduce freq. of attacks (prevent or reduce frequency of attacks)
Two types of inhalation medications
MDI = 2 puffs wait time 1-5 minutes in between Nebulizer = breathing tx/stronger/hospital/emergency
SABA
B2 Agonist. Emergent/Rescue/Short acting
LABA
B2 Agonist.
Long acting and long term control/Get off slowly. Daily medications.