Skip to content

SZMN Blocks for Pain Control in Pediatric Patients Undergoing T&A

Suprazygomatic Maxillary Nerve (SZMN) Blocks for Pain Control in Pediatric Patients Undergoing T&A: Randomized Controlled Trial ]

Status
Completed
Phases
NA
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT04797559
Acronym
SZMN
Enrollment
60
Registered
2021-03-15
Start date
2021-11-29
Completion date
2023-04-19
Last updated
2023-08-14

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Opioid Use, Postoperative Pain

Keywords

SZMN Block, Tonsillectomy and Adenoidectomy, Regional Anesthesia

Brief summary

The suprazygomatic maxillary nerve (SZMN) block is a well-established, safe and effective regional technique for pain management following cleft palate procedures, however, have not been studied for patients undergoing tonsillectomy and adenoidectomy (T&A) procedures. The goals of this study are to determine if SZMN block can be utilized for pain control and decrease morbidity in pediatric patients undergoing T&A.

Detailed description

Patients between 6 months and 18 years undergoing T&A surgical procedures will be reviewed for potential study enrollment. If participants agree to participate, they will be randomized into either the suprazygomatic maxillary nerve (SZMN) block treatment cohort or the control cohort i.e standard of care. After anesthesia induction, patients randomized into the SZMN- treatment group will receive a bilateral single injection SZMN block under general anesthesia in the operating room. The injection will occur near the temples above the cheek bones. Participants enrolled into the control group will receive standard of care with no changes to their anesthetic or surgical care. Both groups will be asked for their verbal pain scores in the PACU and we will track their opioid consumption throughout the next few days after their procedure.

Interventions

PROCEDURESZMN Block

Suprazygomatic Maxillary Nerve (SZMN) Blocks bilaterally near the temples of the patient

Sponsors

Stanford University
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
DOUBLE (Subject, Caregiver)

Masking description

Both groups will receive a small circular band-aid on their temples.

Intervention model description

Patients in the interventional group will receive a total of 5 mL of local anesthetic bilaterally near their temples.

Eligibility

Sex/Gender
ALL
Age
6 Months to 18 Years
Healthy volunteers
Yes

Inclusion criteria

* Ages 0-18 * Give consent/parental consent to participate in study * Patients undergoing tonsillectomy and adenoidectomy

Exclusion criteria

* Participants who do not consent or have parental consent * Patients who are clinically unstable or require urgent/emergent intervention * Patients under age 6 months

Design outcomes

Primary

MeasureTime frameDescription
Post Surgical Pain7 days after surgeryPatients will rate their pain on a 0-10 scale

Secondary

MeasureTime frameDescription
Opioid Consumption1-3 hours after surgery (during the patient's stay in post-anesthesia care unit)Pain medications consumed by patients will be collected

Countries

United States

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 6, 2026