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pulmonary physiology

practical pulmonary physiology

QuestionAnswer
Normal oxygen sat. 92 to 99
On the oxyhemoglobin dissociation curve a shift to the left means hypoxemia, hypothermic, alkalosis the hemoglobin is holding onto oxygen
On the oxyhemoglobin dissociation curve a shift to the right means patient is hyperthermin or pao2 is slightly highter, hemaglobin lets go of oxygen easier
You do not want your pao2 less than 60
how is the right bronchi different than the left shorter and more direct angle
The movement of air between the alveoli and the atmosphere Ventilation
Movement of CO2 and O2 between alveoli and capillaries Diffusion
movement of O2 from the lungs to the tissues and from the tissues to the lung transport
a measurement of the distensibility of the pulmonary tissue Lung compliance
a measurement of the opposition of flow of gases through the airway airway resistance
increases the work of breathing and requires more pressure to ventilate the patient todecreased compliance or increased resistance
tidal volume X resp rate = minute volume
air moved in and out of the lungs in one min Minute volume
normal VE (minute volume) 6-10
results when resp rate or tidal volume are inadequate and there is an increase in PaCO2 and hypoventilation occurs low VE less than 6
response to high CO2 production, CNS response in attempt to maintain normal PaCO2 high VE greater than 10
High VE and and increase in PaCO2 equals patient cant meet ventilatory demand leading to resp failure
optimal gas exchange occurs when thre is ideal matching of ventilation and perfusion
shunt blood from the right heart to the left heart with out picking up O2 anatomic shunt
not enough ventilation but good perfusion Physiologic shunt
more ventilation with poor perfusion physiologic deadspace
primary cause of hypoxemia shunting
treatment for a VQ mismatch cough, suction, lung expansion therapy and mobilize the patient
esitmated shunt refers to PaO2/FiO2 ratio
the oxygen dissolved in the serum is refered to PaO2
the oxygen combined with Hgb is refered to as SaO2
this tells the amount of tissue perfusion SvO2
the measure of total amount of O2 carried in the blood including the plasma CaO2
Created by: dnoyes
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