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Not yet recruitingNCT07671469PerPUpdated Jun 30, 2026

Personalized Blood Transfusion Protocol for Cardiac Patients

An interventional study of Demand-Informed Transfusion Decision Rule in Cardiac Surgery, Blood Transfusion and Anemia, sponsored by Yan Mia Min. Not yet recruiting at 1 site in United States. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2026-06-30.

Sponsored by Yan Mia Min · Not applicable, Interventional, and Treatment

Phase
Not applicable
Study type
Interventional
Enrollment
900
Allocation
Randomized
Ages
18 Years and older
Sex
All
01

Study summary

This study compares two accepted ways of deciding when adults recovering from open-heart surgery should receive a blood transfusion in the intensive care unit. One approach gives a transfusion when the blood count (hemoglobin) falls below a fixed level that is the same for everyone. The other approach adds each patient's own physiology - such as oxygen levels and lactate - to help decide whether a transfusion is truly needed, within a safe range. The investigators want to learn whether the personalized approach is as safe as the standard approach for major outcomes after heart surgery, while reducing the amount of blood transfused. Participants may also choose to give blood and stool samples to a research biobank for future studies on recovery after cardiac surgery.

02

Conditions studied

  • Cardiac Surgery
  • Blood Transfusion
  • Anemia
  • Cardiopulmonary Bypass

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Keywords

  • restrictive transfusion
  • hemoglobin trhreshold
  • oxygen delivery
  • cardiac surgery
  • ICU
03

In context

Anemia

1,733 studies on the registry are indexed under Anemia; 246 are open to participants now.

This study's planned enrollment of 900 is above the median of 94 across 1,291 interventional studies indexed under Anemia.

Browse Anemia studies →

Lead sponsor

This is the only study on the registry with Yan Mia Min as lead sponsor.

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

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  • Adults 18 years or older scheduled for cardiac surgery using the heart-lung machine (cardiopulmonary bypass), such as bypass, valve, or combined procedures
  • Moderate-to-high surgical risk (e.g., EuroSCORE II ≥ 3% or equivalent)
  • Allogeneic red blood cell transfusion is considered likely
  • Able to provide informed consent and understand randomization to different transfusion thresholds
  • Willing to receive blood products and follow study transfusion thresholds from anesthesia induction until hospital discharge or day 28, whichever comes first

Exclusion criteria

Exclusion Criteria:

  • Refusal of or contraindication to allogeneic blood (e.g., Jehovah's Witness or formal directive against transfusion), or enrollment in a preoperative autologous donation program
  • Emergency or salvage procedures where protocol triggers are impractical (e.g., active arrest, aortic dissection with collapse)
  • Heart transplantation, durable ventricular assist device implantation, or surgery solely for VAD insertion
  • Off-pump bypass or other procedures not using cardiopulmonary bypass
  • Severe preoperative anemia (e.g., hemoglobin \< 8 g/dL) or chronic transfusion-dependent anemia
  • Conditions preventing protocol adherence (e.g., anticipated massive hemorrhage, known bleeding disorder, very low platelets, uninterruptible dual antiplatelet/anticoagulant therapy)
  • Chronic dialysis dependence or established end-stage renal disease (eGFR \< 15 mL/min/1.73m² or on maintenance renal replacement therapy) prior to surgery.
  • Pregnancy or lactation
  • Enrollment in another interventional trial affecting transfusion practice or hemoglobin thresholds
  • Unable to provide informed consent (e.g., severe cognitive impairment without a legally authorized representative)
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Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Double (Participant, Outcomes assessor)
Enrollment
900 participants (estimated)

Study arms

  • Active comparator
    Standard Restrictive Threshold (Control)

    Beginning on arrival to the cardiac ICU after surgery, transfusion of red blood cells is generally recommended when hemoglobin is below 7.5 g/dL, consistent with current institutional practice and major restrictive-threshold trials. Standard surgical, anesthesia, perfusion, monitoring, and postoperative care are provided to all participants.

    Other: Demand-Informed Transfusion Decision Rule

  • Experimental
    Demand-Informed (Personalized) Strategy (Experimental)

    Beginning on arrival to the cardiac ICU, an absolute safety floor recommends transfusion when hemoglobin is below 7.0 g/dL regardless of physiology. Between 7.0 and 7.5 g/dL, transfusion decisions are guided by predefined physiologic markers of oxygen balance (e.g., indexed oxygen delivery, venous oxygen saturation, lactate trends): transfusion may be deferred when markers indicate adequate oxygen delivery and is recommended when markers indicate compromised delivery. At or above 7.5 g/dL the rule does not recommend transfusion. The rule is advisory; clinicians may override at any time, and overrides are recorded.

    Other: Demand-Informed Transfusion Decision Rule

Interventions

  • OtherDemand-Informed Transfusion Decision Rule

    A deterministic, rules-based clinical decision aid that operationalizes the assigned ICU transfusion strategy using values already collected in routine care. It contains no trained model or machine learning; it is advisory and can be hand-executed at the bedside.

    Also known as: Personalized transfusion strategy

06

What researchers measure

Primary outcomes

  1. Number of participants with the composite of all-cause mortality, myocardial infarction, stroke, or new renal failure requiring dialysis

    Composite event = occurrence of any one of the following, each component also reported separately: All-cause mortality - death from any cause occurring in-hospital during the index-procedure admission or within 28 days of surgery, whichever is longer. Myocardial infarction - per the Fourth Universal Definition of Myocardial Infarction (Type 5, CABG-related, applying the post-cardiac-surgery biomarker thresholds together with supporting ECG, imaging, or angiographic evidence). Stroke - a new focal neurological deficit of central origin lasting ≥24 hours (or \<24 hours with confirmatory neuroimaging), confirmed by CT or MRI. New renal failure requiring dialysis - new acute kidney injury meeting KDIGO Stage 3 criteria with initiation of renal replacement therapy in a patient not previously on chronic dialysis.

    Time frame: In-hospital for the index procedure or within 28 days of surgery, whichever is longer

Secondary outcomes

  1. Number of participants who die from any cause by 6 months after surgery

    All-cause mortality assessed at 6 months postoperatively. This is the principal longer-term safety endpoint: anemia- and transfusion-related harms in cardiac surgery often manifest after the index hospitalization, so 6-month mortality is the most sensitive single test of whether the personalized strategy is as safe as the standard strategy (consistent with the primary endpoints of TRICS-III and TITRe2).

    Time frame: 6 months after surgery

  2. Number of participants who die (all-cause surgical mortality)

    Death from any cause occurring in-hospital during the index-procedure admission or within 28 days of surgery, whichever is longer.

    Time frame: In-hospital for the index procedure or within 28 days of surgery, whichever is longer

  3. Number of participants with postoperative myocardial infarction

    Per the Fourth Universal Definition (Type 5, CABG-related).

    Time frame: In-hospital or within 28 days of surgery, whichever is longer

  4. Number of participants with postoperative stroke

    New central focal neurological deficit confirmed by CT or MRI.

    Time frame: In-hospital or within 28 days of surgery, whichever is longer

  5. Number of participants with new renal failure requiring dialysis

    KDIGO Stage 3 AKI with initiation of renal replacement therapy, in patients not on chronic dialysis preoperatively.

    Time frame: In-hospital or within 28 days of surgery, whichever is longer

  6. Number of participants with postoperative acute kidney injury

    AKI defined by KDIGO criteria (any stage).

    Time frame: Through 28 days postoperatively

  7. Number of participants with a postoperative infection

    Time frame: Through 28 days postoperatively

  8. Duration of intensive care unit stay

    Time frame: From ICU admission to ICU discharge, up to 28 days

  9. Duration of hospital stay

    Time frame: From surgery to hospital discharge, an average of up to 28 days

07

Study locations

1 site
  • Stanford University Medical Center
    Palo Alto, California 94305, 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 Jun 30, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT07671469
Lead sponsor
Yan Mia Min
Collaborators
Stanford University
Responsible party
Yan Mia Min (Protocol Director, Stanford University) — Sponsor-investigator
First posted
Jun 26, 2026
Start date
Sep 14, 2026 (estimated)
Primary completion
Oct 19, 2029 (estimated)
Completion
Mar 15, 2030 (estimated)
Last update
Jun 30, 2026

Study contacts

Yan Min, MD, PhD
Contact
yanmin@stanford.edu
650-666-9504

Oversight

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

Not currently enrolling

This study is not yet recruiting, as verified in Jun 2026. You cannot join it, but the record below documents what was studied.

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