Comparing the effectiveness of intravenous fentanyl and Emla cream in reducing pain

Comparing the efficacy of intravenous fentanyl Versus Emla Cream in Reducing Pain During needling for medial branch block: Randomized Clinical Trial

Status

Recruiting

Phases

Phase 3

Study type

Interventional

Source

IRCT

Registry ID

IRCT20230702058645N2

Enrollment

124

Registered

2025-03-05

Start date

2025-04-03

Completion date

Unknown

Last updated

2025-07-21

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

Conditions

Facet joint, Spine. Spondylosis

Interventions

Intervention 1: Intervention group: Fentanyl 1-2 micrograms per kilogram will be administered as a dose of 50 µg per 1 cc of normal saline (Fentanyl MCG 50 FENIJECT, manufactured by Abu Rayhan Pharmac

Eligibility

Sex/Gender

All

Age

20 Years to No maximum

Inclusion criteria

Inclusion criteria: Patients requiring medial branch block needling to reduce pain in the lumbar facet joint Patients older than 20 years of age Patient consent to participate in the study

Exclusion criteria

Exclusion criteria: History of surgery Trauma patients Use of neuropsychiatric medications (due to possible impairment in pain perception compared to other people)

Design outcomes

Primary

Measure	Time frame
Pain intensity. Timepoint: 1 and 6 hours post intervention. Method of measurement: Visual Analogue Scale.	—

Secondary

Measure	Time frame
Patient Satisfaction. Timepoint: 1 and 6 hours post intervention. Method of measurement: Patient Satisfaction Index (PSI).	—

Countries

Iran (Islamic Republic of)

Contacts

Public ContactPooyan Alizadeh

Ahvaz University of Medical Sciences

pooyan.alizadeh@yahoo.com+98 61 3373 8317

Outcome results

None listed

Source: IRCT (via WHO ICTRP) · Data processed: Feb 4, 2026