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J Korean Soc Emerg Med > Volume 19(4); 2008 > Article
Journal of The Korean Society of Emergency Medicine 2008;19(4): 421-427.
Isolated Dizziness. Admission? or Discharge?
Soo Hoon Lee, Han Jin Cho, Han Sung Choi, Hoon Pyo Hong, Sin Chul Kim, Young Gwan Ko
1Department of Emergency Medicine, College of Medicine, Kyung Hee University, Seoul, Korea. ygKo@khu.ac.kr
2Department of Emergency Medicine, Dongsuwon General Hospital, Suwon, Korea.
Dizziness is a common chief complaint in patients presenting at emergency deparments. As central dizziness can be life-threatening, it is important to differentiate central from peripheral dizziness. VBI (vertebrobasilar insufficiency) or PICA (posterior inferior cerebellar artery) infarction can present as only isolated dizziness without other neurologic symptoms, thus mimicking peripheral dizziness. It is difficult to differentiate from isolated dizziness in emergency departments because of limitations attendant to time, space, laboratory tests and diagnostic procedures. This study was performed with the goal of devising a protocol to positively identify isolated dizziness at the bedside in emergency departments.
We retrospectively reviewed the medical records of 384 patients with isolated dizziness who visited the emergency department of Kyunghee Medical Center from January 1, 2006 to December 31, 2006. We analyzed age, gender, the risk factors of cerebral vascular accident, neurologic examinations, and features of dizziness and performed a logistic regression analysis.
In logistic regression analysis, age of at least 65 years, cerebral vascular accident history, disequilibrium character, cranial nerve system, and tandem gait abnormality were significantly associated with central dizziness. Negative predictive value and sensitivity of the protocol were 99.6% and 98.7%, respectively.
In patients presenting with isolated dizziness in the emergency department, patients less than 65 years old, and without history of cerebral vascular accident, disequilibrium character, cranial nerve system, or tandem gait abnormality can be safely discharged after conservative management without further evaluation.
Key words: Vertigo, Vertebrobasilar Circulation Transient Ischemic Attack, Posterior Circulation Brain Infarction
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