Abstract
During surgeries of the posterior cranial fossa, sacrificing the superior petrosal vein (SPV) can enhance visualization of the operative field but may also lead to postoperative venous infarction with potentially fatal consequences. We previously proposed that the safety of SPV sacrifice depends on whether there are collaterals that can take on the venous flow of the SPV after its sacrifice. Here, we propose several practical strategies that may be able to evaluate the presence of collaterals to the SPV, so that the safety of SPV sacrifice can be assessed.
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