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What is If posterior epistaxis cannot be controlled, which aery is ligated: and explain in detail?
Ligation technique is reserved for intractable bleeding where the source cannot be located or controlled by other techniques. The hierarchy of aeries used for ligation is: Sphenopalatine aery Internal maxillary aery External carotid Aery Anterior/posterior ethmoidal aery Earlier the most common aery ligated was maxillary aery but now endonasal sphenopalatine aery ligation (ESPAL) is the ligation of choice