Usefulness of repetitive intraoperative @entity3194 -based videoangiography to confirm complete obliteration of micro-arteriovenous XXXX .

@entity1 @entity7026 @entity3194 @entity600 @entity1410
BACKGROUND: It is difficult to intraoperatively confirm the total disappearance of arteriovenous (AV) shunts during surgery for microarteriovenous @entity600 (micro-AVMs), especially when the nidus is extremely small or diffuse on preoperative angiography. Although intraoperative angiography is effective for evaluating residual shunts, procedure-related risks raise important concerns. The purpose of this study was to assess the usefulness of intraoperative @entity3194 -based videoangiography (ICG-VA) to determine complete disappearance of micro-AVMs during surgery. METHODS: We retrospectively analyzed eight @entity1 with ruptured micro-AVMs who were treated using craniotomy with ICG-VA at our institution. RESULTS: Two @entity1 underwent emergency partial evacuation of @entity1410 and external decompression before the diagnostic angiography. While three @entity1 had a nidus smaller than 1 cm, five @entity1 had only early draining veins without an appreciable nidus. The draining veins were superficial in six cases and deep in two cases. The average interval from onset to surgery was 33 days (range, 2-57). ICG-VA was repetitively conducted until disappearance of the AV shunt was confirmed. No residual AV shunt was observed on postoperative radiological examinations. In all cases, the diagnosis of @entity7026 was confirmed from the results of postoperative pathological examination. CONCLUSIONS: ICG-VA could detect early draining veins more clearly in situ than diagnostic angiography. Although it is not as effective for visualizing lesions with deep draining veins, repetitive ICG-VA was safe and effective for confirming the disappearance of AV shunts with superficial drainage.
