PMID- 23803617
OWN - NLM
STAT- MEDLINE
DCOM- 20140401
LR  - 20190606
IS  - 1349-8029 (Electronic)
IS  - 0470-8105 (Linking)
VI  - 53
IP  - 6
DP  - 2013
TI  - Electroencephalographic evaluation of cerebral hyperperfusion syndrome following 
      superficial temporal artery-middle cerebral artery anastomosis.
PG  - 388-95
AB  - Low-flow bypass, such as superficial temporal artery-middle cerebral artery 
      (STA-MCA) anastomosis, can result in cerebral hyperperfusion syndrome (CHS). The 
      present study evaluated the pathophysiological conditions of CHS through the use 
      of repeated electroencephalography (EEG). Among a total of 22 patients who 
      underwent STA-MCA anastomosis over a course of 4 years, 3 patients were diagnosed 
      with CHS based on clinical symptoms and neuroradiological examinations, including 
      cerebral blood flow evaluation. Case 1 and Case 2 developed CHS on postoperative 
      day 1, when EEG demonstrated focal slow waves on the frontal region of the 
      operated side, indicating cortical dysfunction in these areas. Although prompt 
      recovery of these EEG findings was noted with improvement of the clinical 
      symptoms in Case 1, Case 2 developed an intracranial hemorrhage on postoperative 
      day 5, when EEG clearly depicted persistent nonconvulsive status epilepticus 
      (NCSE) after control of convulsive status epilepticus. In contrast, the clinical 
      onset in Case 3 was delayed to postoperative day 6 and EEG revealed frequent 
      ictal discharges in the operated hemisphere, although convulsive seizures were 
      not apparent. Administration of anticonvulsants was performed after the diagnosis 
      of NCSE, and complete recovery from CHS was achieved. Although the 
      pathophysiology of CHS is cortical dysfunction, ictal hyperperfusion associated 
      with NCSE could be included. The present findings emphasize the importance of 
      repeated EEG examinations in the differential diagnosis of the various types of 
      pathophysiological conditions of CHS.
FAU - Morioka, Takato
AU  - Morioka T
AD  - Department of Neurosurgery, Kyushu Rosai Hospital, Kitakyushu, Japan.
FAU - Sayama, Tetsuro
AU  - Sayama T
FAU - Shimogawa, Takafumi
AU  - Shimogawa T
FAU - Mukae, Nobutaka
AU  - Mukae N
FAU - Hamamura, Takeshi
AU  - Hamamura T
FAU - Arakawa, Shuji
AU  - Arakawa S
FAU - Sakata, Ayumi
AU  - Sakata A
FAU - Sasaki, Tomio
AU  - Sasaki T
LA  - eng
PT  - Case Reports
PT  - Journal Article
PL  - Japan
TA  - Neurol Med Chir (Tokyo)
JT  - Neurologia medico-chirurgica
JID - 0400775
SB  - IM
MH  - Adolescent
MH  - Adult
MH  - Aged
MH  - *Anastomosis, Surgical
MH  - Brain Ischemia/*physiopathology/*surgery
MH  - Cerebral Revascularization/*methods
MH  - Dominance, Cerebral/physiology
MH  - *Electroencephalography
MH  - Female
MH  - Frontal Lobe/physiopathology
MH  - Humans
MH  - Hyperemia/*diagnosis/*physiopathology
MH  - Intracranial Hemorrhages/diagnosis/physiopathology
MH  - Male
MH  - Middle Aged
MH  - Middle Cerebral Artery/*surgery
MH  - Postoperative Complications/*diagnosis/*physiopathology
MH  - *Signal Processing, Computer-Assisted
MH  - Status Epilepticus/diagnosis/physiopathology
MH  - Syndrome
MH  - Temporal Arteries/*surgery
MH  - Young Adult
EDAT- 2013/06/28 06:00
MHDA- 2014/04/02 06:00
CRDT- 2013/06/28 06:00
PHST- 2013/06/28 06:00 [entrez]
PHST- 2013/06/28 06:00 [pubmed]
PHST- 2014/04/02 06:00 [medline]
AID - DN/JST.JSTAGE/nmc/53.388 [pii]
AID - 10.2176/nmc.53.388 [doi]
PST - ppublish
SO  - Neurol Med Chir (Tokyo). 2013;53(6):388-95. doi: 10.2176/nmc.53.388.