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• Vol.54 No.6
• CLINICA NEUROL, 54: 480−483, 2014
• Vol.54 No.6 contents

Original Article

The importance of transient neurological attacks (TNAs)

Junichi Uemura, M.D.¹⁾, Takeshi Inoue, M.D.¹⁾, Junya Aoki, M.D.¹⁾, Naoki Saji, M.D.¹⁾, Kensaku Shibazaki, M.D.¹⁾ and Kazumi Kimura, M.D.¹⁾

¹⁾Department of Stroke Medicine, Kawasaki Medical School

Transient neurological attacks (TNAs) are attacks with temporary (< 24 h) neurological symptoms, and reported in 1975. Ischemic cerebral infarction often occurres after transient neurological symptoms which are not sometimes involved in transient ischemic attack (TIA) criteria. The purpose of this study was to clarity transient neurological symptoms before the onset of ischemic stroke. Consecutive acute stroke and TIA patients within 7 days of onset between July 2011 and December 2012 were studied. Questionnaire survey of transient neurological symptoms was done and we investigated the history of transient neurological symptoms and divided the patients into three groups, TIA group (history of TIA), TNAs group (history of TNAs), and no past history group. We compared clinical characteristics, the rate of posterior circulation lesions, and number of attacks among three groups. 184 patients (male 112 patients, mean 73 years old) were enrolled into the present study. TNAs group had 13 (7%) patients, and TIA had 20 (11%). Neurological symptoms of TNAs group were 5 (38%) transient dizziness, 3 (23%) disturbance of consciousness, 2 (23%) weakness of legs, 1 (8%) sensory disturbance of legs, 1 (8%) gait disturbance, and 1 (8%) sensory disturbance of lips. Five (38%) TNAs group had multiple attacks. In 33 transient neurological symptom patients, 17 (52%) patients did not have hospital visit, and 7 (21%) patient did not have antiplatelet and anticoagulant drug. TNAs group more frequently had hyperlipidemia, diabetes mellitus, and posterior circulation lesions among three groups. 20% posterior circulation lesion patients had TNAs history, and posterior circulation might be examined in TNAs patients.
Full Text of this Article in Japanese PDF (1267K)

(CLINICA NEUROL, 54: 480−483, 2014)
key words: transient ischemic attack (TIA), transient neurological attacks (TNAs), posterior circulation

(Received: 12-Aug-13)