Otitis media can occur with or without an effusion. Which of the following best describes an effusion?
a. accumulation of fluid such as in the middle ear or pleural cavity
b. movement of fluid back and forth between the outer ear and inner ear
c. a blocked eustachian tube causes pressure in the middle ear
d. escape of fluid from the middle ear into surrounding tissues
A
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A Correct. Otitis media can occur with or without an effusion. An effusion is best described as an accumulation of fluid such as in the middle ear or pleural cavity.
B Incorrect. An effusion is not best described as a movement of fluid back and forth between the outer ear and inner ear.
C Incorrect. An effusion is not best described as a blocked eustachian tube causing pressure in the middle ear.
D Incorrect. An effusion is not best described as an escape of fluid from the middle ear into surrounding tissues.
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