RT 21 EXAM 2 STUDY GUIDE
Review the following:
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Fick’s, Henry’s and Graham’s Law
Bernoulli’s principle/Venturi effect (definition, what device we use in respiratory therapy that
uses the venturi; what happens as fluid/gas flows through a narrow passage or stricture to
pressure/velocity…
Know what an air-entrainment port does on a venturi mask
Hydrodynamics definition
Poiseuille’s law (definition, components of resistance…)
Reynold’s number (>2000 is turbulent, less than 2000 is laminar)
Flow patterns (turbulent, laminar, transitional)
What is Parabolic velocity
Conditions would cause laminar flow to become turbulent
Coanda Effect
Normal values: PAO2, PaO2, SaO2, PvO2, PACO2, PaCO2, PvCO2, CaO2-CvO2 difference, A-a
gradient, VO2 per minute at rest
CaO2, VO2 and DO2 (formula, what it is used to assess)
What could increase oxygen consumption?
a/A ratio, A-a gradient, PAO2 formula
Law of continuity
Definition of diffusion
Definition of capillary action
Definition of Partial pressure
Definition of viscosity
Know what a shunt is/refractory hypoxemia/ hypoxic vasoconstriction
Know what dead-space ventilation is
Barriers of gas diffusion
Natural shunts/regional differences in ventilation/perfusion
How is O2 carried in the blood
How is CO2 carried in the blood
How does HBO increase O2 in the plasma
What is absorption atelectasis/what can cause it?
What is Respiratory Quotient
What is Oxyhemoglobin, carbaminohemoglobin, Carboxyhemoglobin
Carbon dioxide combines with water and dissociates to form…