This prospective observational study will evaluate postoperative pain after outpatient pediatric adenotonsillectomy in adolescents prescribed either acetaminophen with ibuprofen or acetaminophen with oral ketorolac after discharge, based on the prescribing preference of the otolaryngology surgeon. Participants will complete text-message surveys after discharge to assess pain severity, medication administration, and functional recovery for up to 14 days.

Adenotonsillectomy is commonly associated with significant postoperative pain lasting 10-14 days. As opioid prescribing after adenotonsillectomy has decreased, non-opioid regimens using acetaminophen with either ibuprofen or ketorolac are increasingly used. However, post-discharge pain outcomes with oral ketorolac are not well described. This study will compare postoperative pain experience, severe pain incidence, medication use, functional recovery, and healthcare utilization after discharge among patients receiving acetaminophen plus ibuprofen versus acetaminophen plus low-dose oral ketorolac as part of routine care.

Inclusion Criteria:

Scheduled for outpatient adenotonsillectomy Age 13-18 years ASA physical status I-III Patient or parent has access to a phone with text-messaging capability Patient assent Parent or legal guardian consent

Exclusion Criteria:

Inpatient admission or planned 23-hour observation Known hematologic condition or prior bleeding disorder Current anticoagulant use Known or suspected chronic kidney disease or solitary kidney Known or suspected liver disease or prior liver transplant Known or suspected mitochondrial disease or genetic anomaly Inability to self-report pain History of gastrointestinal ulcer or bleeding Allergy to acetaminophen, ibuprofen, or ketorolac Non-English or non-Spanish speaking Chronic pain or condition requiring frequent routine NSAID use Patient refusal Parent or guardian refusal

Adolescents undergoing outpatient adenotonsillectomy at Texas Children's Hospital Main Campus.

Deidenitified data will be made available at study completion upon reasonable request and in accordance with institutional policy.

Following Study completion