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1. at fluoroscopy, a test for diaphragmatic function; paradoxic motion of a hemidiaphragm when a patient sniffs vigorously shows phrenic nerve paralysis or paresis of the hemidiaphragm.
2. Occurrence of a fishlike odor with potassium hydroxide treatment of vaginal discharge; one of the Amsel criteria for clinical diagnosis of bacterial vaginosis. Synonym(s): whiff test (2)
sniff test(snif test)
fluoroscopy A test for diaphragmatic function; paradoxic motion of a hemidiaphragm when a patient sniffs vigorously to show phrenic nerve paralysis or paresis of the hemidiaphragm. If rapid upward movement of the diaphragm occurs on brisk sniffing in the supine position, it is highly suggestive of paralysis of the diaphragm.
1. Any diagnostic test used to determine if a patient has a deficit in his or her sense of smell
2. Breath test.
3. Any diagnostic test in which a patient is asked to inhale through the nostrils forcefully, with the mouth closed
4. Whiff test.