False-negative hydroxyamphetamine (Paredrine) test in acute Horner's syndrome.
Am J Ophthalmol
; 122(6): 900-1, 1996 Dec.
Article
in En
| MEDLINE
| ID: mdl-8956653
ABSTRACT
PURPOSE:
To describe a false-negative hydroxyamphetamine test.METHOD:
Two patients with acute unilateral Horner's syndrome whose pupils initially dilated equally to hydroxyamphetamine had pharmacologic localization to the postganglionic nerve in the second week following the onset of symptoms.RESULTS:
Neuroimaging confirmed the postganglionic location in both cases.CONCLUSION:
Falsely negative localization with hydroxyamphetamine can occur during the first week after injury, during which time the function of the boutons at the presynaptic terminal is lost.
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Collection:
01-internacional
Database:
MEDLINE
Main subject:
P-Hydroxyamphetamine
/
Horner Syndrome
/
Mydriatics
Type of study:
Prognostic_studies
Limits:
Adult
/
Humans
/
Male
/
Middle aged
Language:
En
Journal:
Am J Ophthalmol
Year:
1996
Document type:
Article