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B4P Trial - BLOOM43 for Preconditioning

BLOOM43 for Preconditioning (B4P): A Pilot Study to Evaluate the Use of the Plexaa Preconditioning Device (BLOOM43) for Reconstructive Breast Surgery - A Prospective Cohort Multicentre Study

Status
Not yet recruiting
Phases
Unknown
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT07340632
Enrollment
60
Registered
2026-01-14
Start date
2026-04-16
Completion date
2026-12-31
Last updated
2026-03-19

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

Conditions

Breast Reconstruction, Breast Surgery, Skin Necrosis

Keywords

Mastectomy skin flap necrosis, Breast reconstruction, Breast surgery, Preconditioning, Skin necrosis

Brief summary

The goal of this clinical trial is to evaluate the use of the Plexaa preconditioning device (BLOOM43) in patients undergoing reconstructive breast surgery for breast cancer. This study aims to understand a participant's experience of the device, including its usability and acceptability. Participants will use the device to precondition their breast the evening before undergoing surgery (mastectomy with immediate autologous and/or implant-based reconstruction).

Interventions

DEVICEBLOOM43

BLOOM43 works by delivering heat preconditioning to the breast skin before surgery.

Sponsors

Plexaa Ltd
Lead SponsorINDUSTRY
Royal Marsden NHS Foundation Trust
CollaboratorOTHER
Portsmouth Hospitals NHS Trust
CollaboratorOTHER_GOV

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
PREVENTION
Masking
NONE

Eligibility

Sex/Gender
FEMALE
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* All females over the age of 18 years (no maximum age limit) * Patients undergoing skin-sparing mastectomy or nipple-sparing mastectomy and immediate breast reconstruction (autologous and/or implant)

Exclusion criteria

* Delayed (two-stage) breast reconstruction patients * Patients undergoing simple mastectomy or wide local excision of a breast tumour * Inflammatory breast cancer patients * Patients with ulcerated breast tumours * Patents with T4 breast cancer * Presence of open breast skin wounds, or infected or inflamed breast skin * Presence of a cardiac pacemaker, defibrillator or any other implantable electronic device

Design outcomes

Primary

MeasureTime frameDescription
Safety of the device90 daysMonitoring AEs, ARs, SAEs, SARs, UARs and USARs
Participant experience30 daysParticipants' experience of the device will be evaluated with the use of a questionnaire. Most of the questions will consist of multiple-choice components with a five-point scale and there will also be a section for further comments from participants.

Secondary

MeasureTime frameDescription
Mastectomy skin flap necrosis90 daysProportion of participants experiencing mastectomy skin flap necrosis and the rates of hospital re-admission and surgical re-intervention due to this
Compliance1 dayProportion of participants who are compliant with the preconditioning protocol

Contacts

CONTACTSaahil Mehta
saahil@plexaa.com447711183551
CONTACTHadyn Kankam
hadyn@plexaa.com

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Mar 20, 2026