Pulmonary
vascular resistance is
(a)
increased when the haematocrit is abnormally high
(b)
decreased when breathing 21% oxygen in 79% helium
(c)
increased by the application of 5 cmH2O positive
end-expiratory
pressure
(d)
increased by hypercapnia
(e)
decreased by moderate exercise
(a)
true (b)
false (c)
true (d)
true (e)
true
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