The present trial conducted to demonstrate the administration of sugammadex as reversal of neuromuscular blockade agent reduces the incidence of emergence agitation (EA) comparing to neostigmine

EA is one of the most common postoperative complications in after general anesthesia in pre-school aged pediatric patients. There are several causes contributed to occurrence of EA such as postoperative pain, type of surgery and surgical site, hyperthermia or hypothermia. Some researches showed that the occurrence of EA is associated with patients' anxiety and investigators of this trial inferred that patients' anxiety after general anesthesia could be related to ability to breathe. Ability to breathe is highly associated with level of residual neuromuscular blockade (NMB) after recovery from general anesthesia. Investigators evaluate the Pediatric Anesthesia Emergence Delirium (PAED) Scale to investigate whether sugammadex as reversal agents of NMB reduces the incidence of EA in pediatric patients who undergo strabismus surgery.

Inclusion Criteria:

• Patients scheduled elective strabismus surgery aged 4-7 with American Society of Anesthesiologists (ASA) classification 1-3.

Exclusion Criteria:

• ASA classification 3 or more
• impaired liver function
• impaired kidney function
• myasthenia gravis or other neuromuscular disorders
• history of drug allergy
• cardiovascular disease or arrhythmia