The intent of this observational study is to collect prospective data regarding neuromuscular monitoring practices and extubation standards (Train-Of-Four [TOF] value) during surgery, in countries of Central and Eastern Europe, Middle East and Africa (CEE/EEMEA countries). Secondarily the study will observe, for which surgical procedures neuromuscular blocking agents (NMBAs), and reversal agents to such, are used. This study is a non-interventional clinical trial, and administration of NMBAs, and respective reversal agents, (as well as all drugs used during anesthesia) will be done in accordance with routine anesthesiology practice, and labeling guidelines. Neuromuscular transmission will be monitored according to routine anesthesiology practice by means of acceleromyography. The assignment of the participant to a particular therapeutic strategy is not decided in advance by a trial protocol, but falls within current practice and the prescription of the medicine is clearly separated from the decision to include the patient in the study.