Because this is the first clinical trial that proposes to evaluate this endpoint, no published data are available at this time. However, assuming a 25% of difference of TF between groups would be clinically meaningful, a confidence interval of 95% and power 80%, sample size calculation provided by StatCalc EPI INFO ver 7.0 (Center for Diseases Control, Atlanta, GA, USA) considered 28 patients for each group fundamental to reach the endpoint predefined. This proposal requests funding for a pilot study, with a double blind design, where participants will be randomly enrolled to receive Sugammadex or Neostigmine with a 1:1 allocation using the standardized table created with the website www.randomization.com.