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Active, not recruitingNCT06519929Updated Sep 9, 2025

Analgesic Techniques for Rib Fractures

A Phase 4 interventional study of ESP block with catheter using ropivacaine (bolus followed by continuous infusion) and Lidocaine bolus (1 mg/kg) and infusion starting at 1 mg/kg/h in Rib Fractures, sponsored by Thomas Jefferson University. Active, not recruiting at 1 site in United States. Open to participants aged 55 Years and older, including healthy volunteers. Per ClinicalTrials.gov, last updated 2025-09-09.

Sponsored by Thomas Jefferson University · Phase 4, Interventional, and Treatment

Phase
Phase 4
Study type
Interventional
Enrollment
24
Allocation
Randomized
Ages
55 Years and older
Sex
All
01

Study summary

This study will be a 3-arm, parallel-group, randomized controlled trial comparing three analgesic techniques for rib fractures with a sample size of 24 patients (8 per group). Patients will be randomly assigned to one of the following three groups: 1) ESP block with catheter using ropivacaine (bolus followed by continuous infusion); 2) lidocaine bolus (1 mg/kg) and infusion starting at 1 mg/kg/h; or 3) standard care with multimodal analgesia and opioids.

Our specific aims are:

  1. To compare the opioid use and pain ratings over the first 72 hours after enrollment.
  2. To quantify the changes in vital capacity, oxygen requirement, and freedom from mechanical ventilation that result from the intervention.
  3. To explore the impact of ESP blocks and lidocaine infusions on the development of chronic pain and post-discharge opioid use (exploratory).

Inclusion Criteria:

  • Adult patients ≥ 55 years old who have sustained 3 or more unilateral rib fractures and are admitted to the hospital.

Exclusion Criteria:

  • Allergy to amide local anesthetics, lidocaine, or ropivacaine
  • Pregnancy
  • Bilateral rib fractures
  • Coagulopathy (INR > 1.5; PTT > 1.5 times ULN, or platelets \< 75,000)
  • Conduction block on EKG
  • Total body weight \< 40 kg
  • Painful distracting injuries: acute thoracic spine fracture, severe traumatic brain injury or spinal cord injury, unstable pelvic fracture, open abdomen
  • Spine fracture at the level of intended ESP block
  • Infection near the ESP insertion site or active bacteremia or sepsis
  • Any patient deemed a poor candidate for ESP block and/or lidocaine infusion will also be excluded
02

Conditions studied

  • Rib Fractures

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03

In context

Rib Fractures

131 studies on the registry are indexed under Rib Fractures; 27 are open to participants now.

This study's planned enrollment of 24 is below the median of 60 across 99 interventional studies indexed under Rib Fractures.

Browse Rib Fractures studies →

Lead sponsor

Thomas Jefferson University is the lead sponsor of 384 studies on the registry; 71 are open to participants now.

Of its 44 completed or terminated interventional studies of FDA-regulated products, 20 (45%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
55 Years and older
Sexes eligible
All
Accepts healthy volunteers
Yes

Inclusion criteria

  • ≥ 55 years old
  • Sustained 3 or more unilateral rib fractures and are admitted to the hospital

Exclusion criteria

Exclusion Criteria:

  • Allergy to amide local anesthetics or any study medications
  • Pregnancy
  • Bilateral rib fractures
  • Coagulopathy (INR > 1.5; platelets \< 100,000)
  • Conduction block on EKG
  • Spine fracture at the level of intended ESP block
  • Infection near the ESP insertion site or active bacteremia or sepsis
  • Any patient deemed a poor candidate for ESP block and/or lidocaine infusion will also be excluded
05

Study design

Phase
Phase 4
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Single (Outcomes assessor)
Enrollment
24 participants (estimated)

Study arms

  • Experimental
    ESP block with catheter using ropivacaine (bolus followed by continuous infusion)

    Procedure: ESP block with catheter using ropivacaine (bolus followed by continuous infusion)

  • Active comparator
    Lidocaine bolus (1 mg/kg) and infusion starting at 1 mg/kg/h

    Drug: Lidocaine bolus (1 mg/kg) and infusion starting at 1 mg/kg/h

  • No intervention
    Standard care with multimodal analgesia and opioids

Interventions

  • ProcedureESP block with catheter using ropivacaine (bolus followed by continuous infusion)

    A total of ropivacaine 75mg will be injected into the plane via the needle, followed by placement of a catheter 3-5 cm into the plane. A continuous infusion of ropivacaine 0.2% will be started at 8 mL/h and may be titrated up to a maximum of 10mL/h. Bolus doses of 5 mL using ropivacaine 0.2% will be permitted for breakthrough pain (pain score ≥ 7/10) and may be administered no more frequently than every 6 hours. Patients will be assessed for LAST twice daily by asking about tinnitus, perioral numbness, or metallic taste. Any patient who responds positively to these symptoms will have infusion stopped for 2 h and then restarted at a rate 2 mL/h lower. If the symptoms occur again, the catheter infusion will be stopped and the catheter removed. After the 72-hour study period the ESP catheter may remain in place if the patient has ongoing analgesia needs or if analgesia is controlled with oral medication the catheter may be removed at request of the treating team.

  • DrugLidocaine bolus (1 mg/kg) and infusion starting at 1 mg/kg/h

    A bolus of 1 mg/kg based on ideal body weight will be given over 10 minutes with a physician present and infusions will be started at 1 mg/kg/h based on IBW. Infusions will run continuously for the first 72 h and can be continued beyond that at the discretion of the treating team if pain persists. Patients will be assessed for LAST twice daily. Any patient with suspected LAST will have lidocaine infusion stopped and a lidocaine plasma level will be sent. If symptoms resolve, the lidocaine infusion can be restarted at a rate 25% lower. If pain is refractory to the lidocaine infusion and multimodal adjuncts, the infusion may be increased to a maximum of 1.5 mg/kg/h (during first 24 h only). The actual duration of the infusion as well as total lidocaine dose given in mg will be recorded. Stopping criteria for lidocaine will include the occurrence of new EKG changes for which an alternative explanation is not more likely as well as LAST symptoms.

06

What researchers measure

Primary outcomes

  1. Opioid Use in oral morphine equivalents (OME)

    This will include both IV and oral opioids. Opioids given via PCA will also be prospectively recorded and included.

    Time frame: 72 Hours

  2. Brief Pain Inventory - current pain subscale (0-10)

    The Brief Pain Inventory (short form) - average of all "current pain" ratings).

    Time frame: 0-72 Hours

Secondary outcomes

  1. Daily opioid use

    The total daily opioid use will be recorded and converted to OMEs. The PDMP will be used to confirm if needed.

    Time frame: 30 Days

  2. Daily opioid Use

    The total daily opioid use will be recorded and converted to OMEs. The PDMP will be used to confirm if needed.

    Time frame: 90 Days

  3. Brief Pain Inventory

    Average pain (0-10) - this is the average of the "average pain" scores

    Time frame: Days 1-3

  4. Brief Pain Inventory

    Average pain (0-10)

    Time frame: Day 30

  5. Brief Pain Inventory

    Average pain (0-10)

    Time frame: Day 90

  6. Vital capacity (mL)

    Volume of air expired after a maximal inspiration in mL measured with spirometer

    Time frame: Baseline prior to intervention

  7. Vital capacity (mL)

    Volume of air expired after a maximal inspiration in mL measured with spirometer

    Time frame: Day 1

  8. Vital capacity (mL)

    Volume of air expired after a maximal inspiration in mL measured with spirometer

    Time frame: Day 2

  9. Vital capacity (mL)

    Volume of air expired after a maximal inspiration in mL measured with spirometer

    Time frame: Day 3

  10. Duke Activity Status Index

    Functional status assessment (0-60 with 60 representing the best function)

    Time frame: Baseline prior to intervention

  11. Short-form 12

    Functional status assessment (0-100 with 100 representing best function)

    Time frame: Baseline prior to intervention

  12. Short-form 12

    Functional status assessment (0-100 with 100 representing best function)

    Time frame: Day 30

  13. Short-form 12

    Functional status assessment (0-100 with 100 representing best function)

    Time frame: Day 90

  14. 3D-CAM/CAM-ICU

    Delirium assessment (yes or no)

    Time frame: Day 1

  15. 3D-CAM/CAM-ICU

    Delirium assessment (yes or no)

    Time frame: Day 2

  16. 3D-CAM/CAM-ICU

    Delirium assessment (yes or no)

    Time frame: Day 3

  17. Respiratory depression

    Naloxone use

    Time frame: Days 1-3

  18. Epidural eligibility

    Clinical judgment of physician

    Time frame: Day 1

  19. RibScore

    Score includes: \>= 6 ribs fractured, flail chest, bilateral fractures, first rib fracture, \>= 3 displaced fractures, fracture in each anatomical area

    Time frame: Day 1

  20. Presence of perioral numbness

    Patient self report

    Time frame: Day 1

  21. Presence of perioral numbness

    Patient self report

    Time frame: Day 2

  22. Presence of perioral numbness

    Patient self report

    Time frame: Day 3

  23. Presence of tinnitus

    Patient self report

    Time frame: Day 1

  24. Presence of tinnitus

    Patient self report

    Time frame: Day 2

  25. Presence of tinnitus

    Patient self report

    Time frame: Day 3

  26. Presence of metallic taste

    Patient self report

    Time frame: Day 1

  27. Presence of metallic taste

    Patient self report

    Time frame: Day 2

  28. Presence of metallic taste

    Patient self report

    Time frame: Day 3

07

Study locations

1 site
  • Thomas Jefferson University Hospital
    Philadelphia, Pennsylvania 19107, United States
08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Sep 9, 2025, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT06519929
Lead sponsor
Thomas Jefferson University
Responsible party
Sponsor
First posted
Jul 25, 2024
Start date
Sep 23, 2024
Primary completion
Aug 31, 2025
Completion
Dec 1, 2025 (estimated)
Last update
Sep 9, 2025

Study contacts

Eric Schwenk, MD
principal investigator · Thomas Jefferson University

Oversight

Data monitoring committee
Yes
FDA-regulated drug
Yes
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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