Delayed surgical resection reduces intraoperative blood loss for embolized meningiomas.

Abstract:

OBJECTIVE:Embolization before surgical resection of tumors has been demonstrated to reduce intraoperative blood loss, but the optimal time that should elapse between embolization and tumor resection has not been established. We evaluated whether immediate surgical resection (< or =24 h) after embolization or delayed surgical resection (>24 h) was more effective in minimizing intraoperative blood loss. METHODS:We retrospectively analyzed the records for 50 patients with meningiomas who underwent preoperative embolization between 1993 and 1999. We divided the patients into two groups, i.e., those who underwent surgical resection of their meningiomas < or =24 hours after embolization and those who underwent surgery more than 24 hours after embolization. The extent of embolization, intraoperative blood loss, duration of surgery, and length of the hospital stay were compared for the two groups. Postoperative pathological specimens were examined for assessment of the extent of vascularity and necrosis caused by embolization. RESULTS:Intraoperative blood loss was greater for the immediate group than for the delayed group (29% with blood loss of >1000 ml [median, 475 ml] versus 0% with blood loss of >700 ml [median, 337.5 ml]; P = 0.01). There were no statistically significant differences between the groups with respect to tumor volume, extent of embolization, degree of devascularization, necrosis, duration of surgery, or length of the hospital stay. CONCLUSION:Contrary to previous studies that emphasized a need for tumor removal immediately after embolization, to prevent revascularization, surgical resection of meningiomas should be delayed more than 24 hours after embolization, because there is less intraoperative blood loss.

journal_name

Neurosurgery

journal_title

Neurosurgery

authors

Chun JY,McDermott MW,Lamborn KR,Wilson CB,Higashida R,Berger MS

doi

10.1097/00006123-200206000-00010

keywords:

subject

Has Abstract

pub_date

2002-06-01 00:00:00

pages

1231-5; discussion 1235-7

issue

6

eissn

0148-396X

issn

1524-4040

journal_volume

50

pub_type

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