Infraorbital-Infratrochlear Block vs Sphenopalatine Ganglion Block for Postoperative Analgesia in Septorhinoplasty.

This study is designed to evaluate the postoperative analgesic efficacy and clinical outcomes of two regional anesthesia techniques-infraorbital-infratrochlear nerve block (ION-ITN block) and transnasal sphenopalatine ganglion block (usg guided sphenopalatine ganglion block,SPG block)-in patients undergoing septorhinoplasty under general anesthesia. Eligible patients aged 18-65 years with ASA physical status I-II will be randomly assigned to one of two intervention groups. Blocks will be performed after induction by an anesthesiologist not involved in postoperative assessment. Patients, surgeons, anesthesiologists performing postoperative evaluations, follow-up investigators, and data analysts will remain blinded to group allocation.

Postoperative outcomes will include pain intensity assessed using the Numerical Rating Scale (NRS) at 0-2, 2-8, and 8-24 hours after surgery, agitation between extubation and PACU discharge assessed with the Riker Sedation-Agitation Scale (RSAS), emergence agitation (RSAS ≥5), time to first rescue analgesic, and total tramadol consumption within 24 hours. Additional outcomes include postoperative nausea and vomiting, cardiovascular and respiratory adverse events, surgical site complications (edema, hematoma, neurologic deficit), and patient satisfaction measured by a 5-point Likert scale. Preoperative demographics, BMI, ASA class, comorbidities, anesthesia and surgery duration, and intraoperative remifentanil consumption will be recorded. The study aims to determine whether SPG block provides superior postoperative analgesia compared with ION-ITN block in septorhinoplasty patients.

Inclusion criteria

• age 18-65 years.
• Scheduled for septorhinoplasty under general anesthesia.
• American Society of Anesthesiologists (ASA) Physical Status I-II.
• Ability to cooperate with postoperative evaluations.
• Provision of written informed consent.

Exclusion criteria

• Allergy or contraindication to local anesthetics used in the study.
• Coagulopathy or anticoagulant therapy.
• Local infection at the nerve block application sites.
• Severe nasal anatomical abnormalities preventing transnasal block application.
• Psychiatric disorders affecting pain or agitation assessment..
• Chronic pain conditions or chronic opioid use.
• Neurological disorders affecting sensory perception.
• Refusal to participate.