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V. Symptom Analysis

Dennis E. Futty, MS; P. Michael Conneally, PhD; Mark L. Dyken, MD; Thomas R. Price, MD; Armin F. Haerer, MD; David C. Poskanzer, MD; Phillip D. Swanson, MD; Philip R. Calanchini, MD; Robert A. Gotshall, MD

JAMA. 1977;238(22):2386-2390.

Abstract
All patients (1,328) suspected of having transient ischemic attacks (TIA) who came to six institutions during a 21-month period were identified. Symptoms and symptom complexes were related to the clinical diagnoses by cross-tabulation, factor analysis, and discriminant analysis. The diagnoses obtained by the discriminant analysis program were comparable to those of reviewing clinical neurologists. Symptoms of importance in the vertebral-basilar system (VBS) were bilateral visual blurring, diplopia, ataxia, and dizziness; in either carotid system (CAS), ipsilateral monocular visual disturbance and contralateral weakness or sensory complaints; in the left CAS, language disturbances; and in those whose ultimate diagnosis was not TIA, loss of consciousness, confusion, and bilateral leg weakness. Patients with VBS TIAs have symptoms common to conditions that are not TIA and have a greater variety of symptoms and more combinations of symptoms than CAS TIA.

(JAMA 238:2386-2390, 1977)

Author Affiliations
For university affiliations and additional contributors, see Table 1.

Footnotes
Reprint requests to Department of Neurology, Indiana University School of Medicine, 1100 W Michigan St, Indianapolis, IN 46202 (Dr Dyken).

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