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NURS 6902 Thoracic A/P, Cardiac Pharm, CIED, Hemodynamics Exam
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NURS 6902 Thoracic A/P, Cardiac Pharm, CIED,Hemodynamics Exam
What law best discusses airway resistance? - ANSWER Poiseulle's Law
R = 8NL / (Pi x radius^4)
What is Reynold's number? - ANSWER predicts whether the flow is laminar or
turbulent
What would Reynold's number for laminar flow be? - ANSWER <2000
What would a Reyonld's number for turbulent flow be? - ANSWER >4000
What is static compliance? - ANSWER This is the pressure of the lung when a
known volume is inhaled and held (no airflow)
-Takes only into account alveolar compliance
What is the equation for static compliance? - ANSWER Cs = TV / (Plateau
pressure - PEEP)
What is normal static compliance? - ANSWER 50-60 mL/ cm H2O
What is dynamic compliance? - ANSWER · Measured during normal tidal
breathing (it takes into account for the airways and the lungs)
What is the equation for dynamic compliance? - ANSWER Dynamic compliance =
TV / (Peak inspiratory pressure - PEEP)
What is normal dynamic compliance? - ANSWER 200
What is the oxygen dissociation curve? - ANSWER A curve that represents where
50% of hemoglobin is saturated w/ O2 at different O2 pressures
- If curves shift to the left, hemoglobin wants to hold onto oxygen (higher affinity)
- If the curve shifts to the right, it will release oxygen more easily
- The shift is influenced by pH, temperature, PaCO2, and 2,3 DPG
, What are the factors that shift the O2 dissociation curve to the left? - ANSWER 1.
Decreased 2,3 DPG
2. Hypothermia
3. Decreased metabolism
4. Alkalosis
What are the factors that shift the O2 dissociation curve to the right? - ANSWER 1.
Increased 2,3 DPG
2. Acidosis
3. Hypercarbia
4. Hyperthermia
What is West Zone 1 in the lateral position? - ANSWER Zone 1: Nondependent
lung (upper portion)
What is West Zone 2 in the lateral position? - ANSWER Zone 2: Lower portion of
the non-dependent lung, upper portion of the dependent lung
What is West Zone 3 in the lateral position? - ANSWER Zone 3: Lower 2/3 of the
dependent lung
What is the anatomical structure of the R mainstem? - ANSWER 1. Shorter, ~ 2.5
cm
2. Larger diameter
3. Less of an angle (25 degrees)
4. Easier to maintain!
What is the anatomical structure of the L mainstem? - ANSWER 1. Longer, ~ 5 cm
2. 45 degree angle
How can you oxygenation in OLV? - ANSWER · CPAP for the lung that is not
getting ventilated (most effective way to ventilate one-lung)
· Confirm tube placement
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