Which of the following can be inferred from the selection above?
A
flu viruses are better equipped to survive on
non-porous than on porous surfaces
B
flu viruses are better equipped to survive on
porous than on non-porous surfaces
С
there is little difference in the lifespan of the
flu virus, regardless of the surface on which it
is found
D
flu viruses have relatively long survival times
regardless of the type of surface they are
transferred to

A92-year-old man with a 45-year history of chronic obstructive pulmonary disease is intubated in the icu because of a bout of viral pneumonia that fails to improve after 72 hours of antibiotics. although the inspired fraction of oxygen is 100%, the patient's po2 remains at 57 mmhg. positive-end expiratory pressure (peep) is added to allow the inspired fraction of oxygen. twelve hours after the introduction of peep the patient suddenly become hypotensive. at the same time, his oxygen saturation drops from 92% to 61%. on physical examination, his bp is 80/50 mmhg and his pulse is 124/min. he has distended neck veins and distant heart sounds. which of the following would also most likely be seen on this patient's physical examination? - absence of breath sounds in the right hemithorax- high amplitude carotid artery upstroke- a pleural friction rub- pulsus alternans- splenomegaly