Early Percutaneous Cryoablation for Pain Control After Rib Fractures Among Elderly Patients
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ClinicalTrials.gov Identifier: NCT04482582 |
Recruitment Status :
Not yet recruiting
First Posted : July 22, 2020
Last Update Posted : January 19, 2021
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Condition or disease | Intervention/treatment | Phase |
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Rib Fractures | Radiation: Cryoneurolysis Other: Standard of Care | Not Applicable |
Study Type : | Interventional (Clinical Trial) |
Estimated Enrollment : | 110 participants |
Allocation: | Randomized |
Intervention Model: | Parallel Assignment |
Intervention Model Description: | We are proposing a prospective, randomized trial evaluating efficacy of image-guided percutaneous intercostal cryoneurolysis (pICN) for pain control after traumatic rib fractures in persons >=65 years. Eligible patients would be enrolled by the trauma service after consent or assent is obtained. Patients will be randomized to either pICN within 72 hours of presentation or existing standard-of-care. |
Masking: | None (Open Label) |
Primary Purpose: | Treatment |
Official Title: | Early Percutaneous Cryoablation for Pain Control After Rib Fractures Among Elderly Patients |
Estimated Study Start Date : | March 1, 2021 |
Estimated Primary Completion Date : | March 1, 2022 |
Estimated Study Completion Date : | March 31, 2022 |

Arm | Intervention/treatment |
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Experimental: Image-guided percutaneous ICN (pICN): Group A
Patients who were admitted after a traumatic injury, with rib fractures identified, who are >= 65 years of age will be randomized to percutaneous image-guided cryoneurolysis (pICN) group within 72 hours of presentation.
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Radiation: Cryoneurolysis
Patients will be offered a minimally invasive solution known as cryoneurolysis. By directly applying a cold cryoneurolysis probe to the nerves the axon is destroyed, resulting in Wallerian degeneration of the distal nerve without distorting epineurial or perineurial tissue. Application of cryoneurolysis will help reduce the amount of narcotics the patient would need to take and instead provide them longer term pain control with minimal risk. |
Active Comparator: Standard-of Care : Group B
Patients who were admitted after a traumatic injury, with rib fractures identified, who are >= 65 years of age will be randomized to standard-of-care group within 72 hours of presentation.
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Other: Standard of Care
Patients will be provided regular standard of care at the Stanford Hospital with long-term follow-up provided at the Stanford Center for Reconstruction after Chest Wall Injury. |
- Acute Pain Assessed by Numeric Pain Score [ Time Frame: 12 months ]The patient will be asked to verbalize their numeric pain score daily after discharge and at follow-up visits. Pain measured on a scale of 0 to 10, with 0 being no pain and 10 being the worst pain.
- Length of hospital stay [ Time Frame: Up to 1 month ]The Length of Stay will be obtained from the patient's chart after discharge and will depend on the level of care required for recovery from their injuries.
- 30-day mortality [ Time Frame: 1 month ]Will be obtained from chart review after discharge
- Number of participants requiring ICU admission [ Time Frame: 1 month ]Will be obtained from chart review after discharge
- Use of Narcotic Equivalents [ Time Frame: 12 months ]Oral narcotic equivalents on day of discharge.
- 30-day rib-specific readmission [ Time Frame: 1 month ]Incidence of readmission. The patient will be admitted back to the hospital if pain level relates to rib-specific injuries such as hemothorax and pneumonia.
- The McGill Pain Questionnaire (MPQ) and Pain Rating Index (PRI) Scale Score [ Time Frame: 12 months ]The McGill Pain Questionnaire (MPQ) is a validated 20 question instrument to quantify subjective pain and the scoring system yields a Pain Rating Index (PRI) score between Mild, Moderate or Severe. The questionnaire will be administered to the patient by study/ clinical staff upon discharge. The scoring system yields a pain rating index (PRI) score between 0 and 50 used to temporally track pain, higher scores correspond to higher pain levels.
- The Glasgow Outcome Scale Extended (GOS-E) Score [ Time Frame: 12 months ]
The Glasgow Outcome Scale (GOS) is a global scale for functional outcome that rates patient status into one of five categories: Dead, Vegetative State, Severe Disability, Moderate Disability or Good Recovery. The Extended GOS (GOSE) provides more detailed categorization into eight categories by subdividing the categories of severe disability, moderate disability and good recovery into a lower and upper category:
- Death (D)
- Vegetative state (VS)
- Lower severe disability (SD -)
- Upper severe disability (SD +)
- Lower moderate disability ( MD -)
- Upper moderate disability ( MD +)
- Lower good recovery (GR -)
- Upper good recovery (GR +)
The questionnaire will be administered to the patient by study/clinical staff upon discharge.
- Short Form (SF-12) Health Survey Scale Score [ Time Frame: 12 months ]
The 12-Item Short-Form Health Survey is a widely used composite score used to gauge overall health. The composite score is based on 8 domains scores contained in the SF-12 questionnaire, which will be administered to the patient by study/clinical staff upon discharge.
Score ranges from 1 (Excellent) to 5 (Poor) , 1 (Yes, limited a lot) to 3 (No, not limited at all), 1 (Yes) 2 (No), 1 (Not at all) to 5 (Extremely), 1 (All of the time) to 6 (None of the time) and 1 (All of the time) to 5 (None of the time).

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Ages Eligible for Study: | 65 Years and older (Older Adult) |
Sexes Eligible for Study: | All |
Accepts Healthy Volunteers: | No |
Inclusion:
- Patients greater than 65 years with any acute rib fracture of ribs 3,4,5,6,7,8, or 9.
- Pain score higher than or equal to 3
- Presenting and admitted to Stanford Emergency Department
Exclusion:
- Radiographic evidence of metastasis to ribs
- Glasgow Coma Scale (GCS) score < 13
- Patients undergoing Surgical Stabilization of Rib Fractures (SSRF)
- Rib fractures located < 3cm from spinous process
- Coagulopathy (INR >1.5, Pat < 100)
- Other factors precluding cryoablation at Interventional Radiologist (IR) attending's discretion
- Patients who do not have any rib fractures of ribs 3,4,5,6,7,8, or 9.

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT04482582
Contact: Sharon Cardenas-Ledezma, BS | (650) 724-4023 | carshar@stanford.edu |
United States, California | |
Stanford Hospital and Clinics | |
Palo Alto, California, United States, 94305 |
Principal Investigator: | Joseph D Forrester, MD | Stanford University |
Responsible Party: | Joseph Forrester, Assistant Professor of Surgery, Stanford University |
ClinicalTrials.gov Identifier: | NCT04482582 |
Other Study ID Numbers: |
57099 |
First Posted: | July 22, 2020 Key Record Dates |
Last Update Posted: | January 19, 2021 |
Last Verified: | January 2021 |
Individual Participant Data (IPD) Sharing Statement: | |
Plan to Share IPD: | No |
Studies a U.S. FDA-regulated Drug Product: | No |
Studies a U.S. FDA-regulated Device Product: | Yes |
Fractures, Bone Rib Fractures Wounds and Injuries Thoracic Injuries |