Abstract:Tumors in the posterior fossa can be done in lateral, supine, prone, sitting and in park bench positions. Depending on the exact position of the lesion and the technical preference of the surgeon, sitting position may be preferred. Sitting position grants best possible access to deeper structures with minimal retraction. However, maintenance of anaesthesia in this position for long duration pose some serious challenges to the anaesthesiologist including high risk of venous air embolism (VAE), hemodynamic insta… Show more
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