Study where children will receive one premedication, either intranasal dexmedetomidine or oral midazolam, to reduce agitation on emergence of anesthesia. The hypothesis is that dexmedetomidine is superior but previous studies lack quality.

Children will be randomized to receive, either midazolam (0.5mg/kg) or dexmedetomidine (1mcg/kg), as anesthetic premedication. Emergence agitation will be assessed by PAED scale.

Inclusion Criteria:

• Scheduled for amygdalectomy
• American Society of Anesthesiologists Physical Status PI or PII
• Absence of congenital neuropathy
• Absence of cardiac pathology (any)
• Intolerance to one of the studied drugs.

Exclusion Criteria:

• Protocol violation
• Need to transfer for ICU intubated

Plan to share the database used for analysis, without any variable that may help to identify individuals (such as name, register), to facilitate meta-analysis and re-analysis.

Participants will not know which group they will be allocated. The anesthesia care provider will not know which premedication the patient received because another professional, who is not from the research team, will provide it to the child. The investigator and outcome assessor will only know the allocated group latter by a code which will be revealed after the end of the analysis.