Residual neuromuscular block (RNMB) is frequent in the immediate postoperative period and is a source of complications, mainly respiratory. This includes recovery delay or hospital discharge delays, respiratory insufficiency or infections, unforeseen ICU admissions, and prolonged ICU stays.~The incidence is variable due to multiple factors. Age, gender, surgery, NMBA type and doses, temperature, medications, etc.~In several studies it has been found and incidence between 6-80%. Few studies have been focused in evaluating the incidence in the whole country, as representing a global anesthesia practice. In Spain the incidence is unknown.~The investigators hypothesize that a number of patients in the postanesthesia care unit (PACU) present with RNMB after general anesthesia using intermediate action NMBA.~The main objective is to know the incidence of RNMB in Spanish hospitals, by means of an observational cross-sectional multicenter study .~Secondary objectives are to observe the possible relationship with other pre- and intraoperative factors.
Residual neuromuscular block (RNMB) is frequent in the immediate postoperative period and is a source of complications, mainly respiratory. The incidence is variable due to multiple factors. In Spain the incidence is unknown.~The investigators hypothesize that a number of patients in the postanesthesia care unit (PACU) present with RNMB after general anesthesia using intermediate action neuromuscular block agents (NMBA).~The main objective is to know the incidence of RNMB in Spanish hospitals. Secondary objectives are to observe the possible relationship with other pre- and intraoperative factors.