V/Q mismatch — Flashcards

Both ventilation and perfusion are _____ at the base of the lung than at the apex of the lung

Is the A - a gradient normal, increased, or decreased, in response to V/Q mismatch? _____

In response to exercise, the V/Q ratio from apex to base becomes more _____ (even or uneven)

What is the ideal V/Q ratio for adequate gas exchange? _____

What type of V/Q mismatch occurs due to pulmonary embolus?_____

In a patient with a pulmonary emboli, V/Q lung scan shows mismatch due to abnormal _____

The _____ of a healthy lung is the largest contributor of alveolar dead space

The normal average value for V/Q is _____

Does 100% O2 improve PaO2 in V/Q mismatch due to physiologic dead space? _____

A decrease in PAO2 causes a hypoxic _____ that shunts blood away from poorly ventilated regions of the lung