Assessment of the Effect of Age on Duration of Analgesia From Single-shot Femoral Nerve Blocks

• Conditions: Analgesia

• Registration Number: NCT04495413
• Lead Sponsor: University of Washington

Brief Summary

Cohort study to examine the effect of age on duration of analgesia in patients receiving single-shot femoral nerve block prior to surgery, by postoperative phone follow-up questionnaire.

Detailed Description

The purpose of this study is to find out how differences in age can affect the duration of pain relief from a femoral nerve block. Complete recovery after leg surgery involves healing of tissues at the surgical site, recovery of muscle strength and range-of-motion. Some pain is normally experienced after leg surgery. At the hospital, pain is usually treated with pain medicines, and/or a nerve block procedure. A nerve block involves injecting a local anesthetic beside the nerves to numb the nerves that supply feeling to the knee joint and surrounding tissues. The choice as to whether a participant has a nerve block or not is made by the participant and their surgeon and is not determined by this research study. The study aim is to find out how long a nerve block can relieve postsurgical pain, and whether that duration is affected by the age of the participant.

Study Timeline

• Study Start: 2020-06-15
• Study First Submitted: 2020-07-27
• Study First Submitted QC: 2020-07-29
• Study First Posted: 2020-07-31
• Status Verified: 2021-09
• Last Update Submitted: 2021-09-08
• Last Update Posted: 2021-09-10
• Primary Completion: 2022-06-15
• Study Completion: 2022-06-15

Recruitment & Eligibility

• Status: UNKNOWN
• Sex: All
• Target Recruitment: 100

Inclusion Criteria

• Adult patients (age >18 years)
• American Society of Anesthesiology physical status 1-3
• Having ambulatory surgery, who have received a single-shot femoral nerve block
• Able to read and understand English
• Have access to a phone after surgery

Read More

Exclusion Criteria

• Pediatric patients (age <18 years)
• American Society of Anesthesiology physical status >3
• Unable to read and understand English
• Unable to have access to a phone after surgery

Read More

Study & Design

• Study Type: OBSERVATIONAL
• Study Design: Not specified

Primary Outcome Measures

Name	Time	Method
Duration of analgesia	From time of block placement to patient to the reported end of analgesic effect, up to 72 hours	Total duration of analgesia from peripheral femoral nerve block

Trial Locations

Locations (1)

University of Washington Medical Center; 🇺🇸 Seattle, Washington, United States