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We thank Dr McLean for their comments1 regarding our recent manuscript “Percutaneous cervical sympathetic block to treat cerebral vasospasm and delayed cerebral ischemia: a review of the evidence”.2 We agree that the literature in this field is heterogenous with respect to type, dose, volume of local anesthetic, and method of delivery used for cervical sympathetic block (CSB). To highlight this heterogeneity, we specifically mentioned these limitations in our manuscript in the paragraph ‘Drug type, drug volume and drug delivery modality’. Such heterogeneity makes it difficult to draw conclusions on the preferred drug, volume, and delivery modality to use, and we therefore chose to write a narrative review, rather than a systematic review, of the …
Funding The authors have not declared a specific grant for this research from any funding agency in the public, commercial or not-for-profit sectors.
Competing interests None declared.
Provenance and peer review Not commissioned; internally peer reviewed.