NCIt definition : The sodium salt form of sugammadex, a biologically inert, selective relaxant binding
agent (SRBA) composed of a modified, anionic gamma cyclodextrin derivative containing
a hydrophilic exterior and a hydrophobic core, with neuromuscular blocking drug (NMBD)
reversal activity. Upon administration, the negatively charged carboxyl-thio-ether
groups of sugammadex selectively and reversibly bind to the positively charged quaternary
nitrogen of a steroidal NMBD, such as rocuronium and vecuronium, which was administered
at an earlier time for anesthetic purposes. The encapsulation of the NMBD by sugammadex
blocks its ability to bind to nicotinic receptors in the neuromuscular junction and
thereby reverses the NMBD-induced neuromuscular blockade.;