Landmark vs. Ultrasound-Assisted Bone Marrow Biopsy Procedure Study (LUMP)

  • STATUS
    Recruiting
  • End date
    Apr 2, 2025
  • participants needed
    100
  • sponsor
    Medical College of Wisconsin
Updated on 2 June 2022

Summary

Bone marrow biopsies are routinely performed by the Medicine Bedside Procedure Team service at Froedtert Hospital. Typical indications for inpatient bone marrow biopsies include evaluations for cytopenia, leukemia, lymphoma, myelodysplastic syndrome, or plasma cell dyscrasia. The bone marrow is sampled from the posterior iliac crest, ideally by drilling into the posterior superior iliac spine (PSIS). The Arrow® OnControl® Powered Bone Access System is utilized for this process. Most frequently, the location of the PSIS is estimated by using palpation of landmarks, such as the lateral iliac crests, spinous processes, sacrum, and the PSIS itself. Additionally, when using lidocaine to anesthetize the site, the needle is maneuvered to locate the most superficial portion of the PSIS, confirming the optimal drill anchor site. The correct direction/angle of the drill is estimated based on the orientation of the patient, typically directing it perpendicular to the coronal plane.

Palpating landmarks to identify the posterior superior iliac spine is often difficult due to patient body habitus. Ultrasonography allows for accurate identification of the PSIS. It allows the clinician to pinpoint the best entry point in the skin and optimal drill angle to drive the needle perpendicular to the coronal plane. Furthermore, it allows the clinician to measure the distance from the skin to the PSIS, ensuring the drill bit is anchored onto the correct site.

The benefits of an ultrasound approach have not been well documented. Therefore, this study will seek to provide evidence of benefits, or lack thereof, in using ultrasound for bone marrow biopsies. This will be achieved using a two-arm, open-label, randomized study design which will compare patient outcomes, as measured by pain assessment, bone marrow biopsy procedure metrics, and bone marrow biopsy sample quality, between subjects that have undergone the procedure using either the control landmark palpation method or ultrasound-assisted technique to properly identify the PSIS.

Description

2.1 Hypothesis The Investigators will be working under the overarching hypothesis that using ultrasound to locate the PSIS and determine the appropriate drilling angle will provide better outcomes and disease diagnosis for patients undergoing the bone marrow biopsy procedure.

2.2 Primary Objective • Determine whether incorporating ultrasound into a routine bone marrow biopsy improves the adequacy of core sample for diagnosis.

2.3 Secondary Objectives

  • Determine whether incorporating ultrasound into a routine bone marrow biopsy improves the adequacy of aspirate smears.
  • Determine whether incorporating ultrasound into a routine bone marrow biopsy improves patient pain assessment.
  • Establish a correlation between number of drill attempts and patient pain.
  • Examine whether the ultrasound-assisted bone marrow biopsy procedure reduces drill attempts.
  • Determine if ultrasound-assisted bone marrow biopsy reduces patient risk, as measured by the number of complications post-procedure.

2.4 Primary Endpoint

• Adequacy of core samples for diagnosis between landmark and ultrasound-assisted arms: The proportion of adequate, suboptimal, and inadequate bone marrow biopsy samples, as measured by the overall length of evaluable marrow space using hematoxylin and eosin (H&E) stained slides, will be compared between the landmark and ultrasound-assisted cohorts. Cores containing ≥1.5 cm of evaluable marrow space will be considered adequate, 0.5-1.5 cm suboptimal, and <0.5 cm inadequate.

2.5 Secondary Endpoints

  • Adequacy of aspirate smears between landmark and ultrasound-assisted arms: The proportion of adequate, suboptimal, and inadequate aspirate smears, as measured by the presence of aggregate marrow spicules and overt presence of marrow cells, will be compared between the landmark and ultrasound-assisted cohorts. Aspirate smears with at least one 200x field in aggregate marrow spicules will be considered adequate. Those with marrow spicules but less than one 200x field in aggregate, or those without marrow spicules but with overt presence of marrow cells on initial scanning, will be considered suboptimal. Those without marrow spicules and without overt presence of marrow cells on initial scanning will be considered inadequate.
  • Patient pain assessment between landmark and ultrasound-assisted arms: The proportion of patients with a pain score of seven or more, determined 12 to 24 hour post-procedure, will be compared between the landmark and ultrasound-assisted cohorts. Pain assessment will be scored for each patient using the 0-10 point visual analog scale.
  • Correlation between number of drill attempts and patient pain: A correlation coefficient (Pearson's or Spearman's) will be determined by using the number of drill attempts and the pain scores collected during a 12- to 24-hour post-procedure window for all patients regardless of the arm. The number of drill attempts needed to obtain bone marrow for each patient will be recorded immediately following the procedure. Patient pain assessment will be scored using the 0-10 point visual analog scale.
  • Number of drill attempts between landmark and ultrasound-assisted arms: The mean number of drill attempts needed will be compared between the landmark and ultrasound-assisted cohorts. The number of drill attempts needed to obtain bone marrow for each patient will be recorded immediately following the procedure.
  • Number of complications between landmark and ultrasound-assisted arms: The mean number of complications within +30 days post-procedure will be compared between the landmark and ultrasound-assisted cohorts. The specific type and number of complications will be recorded and tabulated, respectively, for each patient within +30 days post-procedure.

Details
Condition Bone Marrow Biopsy Procedure
Treatment Ultrasound-assisted bone marrow biopsy, Landmark palpation bone marrow biopsy
Clinical Study IdentifierNCT05258357
SponsorMedical College of Wisconsin
Last Modified on2 June 2022

Eligibility

Yes No Not Sure

Inclusion Criteria

Inpatient at Froedtert & MCW Froedtert Hospital ≥18 years old
Inpatient at Froedtert & MCW Froedtert Hospital requiring a bone marrow biopsy performed by the Medicine Bedside Procedure Team
Bone marrow biopsy is being performed for the explicit purpose of hematology/oncology assessment
Personally or via power of attorney (POA) in-person consent to the bone marrow biopsy procedure
Provide written informed consent to be on the study
English speaking

Exclusion Criteria

Inpatient at Froedtert & MCW Froedtert Hospital <18 years old
Inpatient having no indication for bone marrow biopsy
BMI ≥ 40
Inpatient that does not consent to the procedure themselves or have a POA that does not consent to the procedure
Clear my responses

How to participate?

Step 1 Connect with a study center
What happens next?
  • You can expect the study team to contact you via email or phone in the next few days.
  • Sign up as volunteer to help accelerate the development of new treatments and to get notified about similar trials.

You are contacting

Investigator Avatar

Primary Contact

site

0/250

Additional screening procedures may be conducted by the study team before you can be confirmed eligible to participate.

Learn more

If you are confirmed eligible after full screening, you will be required to understand and sign the informed consent if you decide to enroll in the study. Once enrolled you may be asked to make scheduled visits over a period of time.

Learn more

Complete your scheduled study participation activities and then you are done. You may receive summary of study results if provided by the sponsor.

Learn more

Similar trials to consider

Loading...

Not finding what you're looking for?

Every year hundreds of thousands of volunteers step forward to participate in research. Sign up as a volunteer and receive email notifications when clinical trials are posted in the medical category of interest to you.

Sign up as volunteer

user name

Added by • 

 • 

Private

Reply by • Private
Loading...

Lorem ipsum dolor sit amet consectetur, adipisicing elit. Ipsa vel nobis alias. Quae eveniet velit voluptate quo doloribus maxime et dicta in sequi, corporis quod. Ea, dolor eius? Dolore, vel!

  The passcode will expire in None.
Loading...

No annotations made yet

Add a private note
  • abc Select a piece of text from the left.
  • Add notes visible only to you.
  • Send it to people through a passcode protected link.
Add a private note