Reply to: Pulse oximeter perfusion index for assessment of brachial plexus block: a holy grail or a design fail? | Ahmed Hasanin

Reply to: Pulse oximeter perfusion index for assessment of brachial plexus block: a holy grail or a design fail?

Citation:: Hasanin, A., "Reply to: Pulse oximeter perfusion index for assessment of brachial plexus block: a holy grail or a design fail?", British journal of anaesthesia, vol. 119, issue 6, pp. 1239, 2017 Dec 01.