- ICH GCP
- Yhdysvaltain kliinisten tutkimusten rekisteri
- Kliininen tutkimus NCT07671469
Personalized Blood Transfusion Protocol for Cardiac Patients (PerP)
Personalized (Demand-Informed) Blood Transfusion Protocol for Cardiac Patients
Tutkimuksen yleiskatsaus
Tila
Interventio / Hoito
Opintotyyppi
Ilmoittautuminen (Arvioitu)
Vaihe
- Ei sovellettavissa
Yhteystiedot ja paikat
Opiskeluyhteys
- Nimi: Yan Min, MD, PhD
- Puhelinnumero: 650-666-9504
- Sähköposti: yanmin@stanford.edu
Opiskelupaikat
-
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California
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Palo Alto, California, Yhdysvallat, 94305
- Stanford University Medical Center
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Osallistumiskriteerit
Kelpoisuusvaatimukset
Opintokelpoiset iät
- Aikuinen
- Vanhempi Aikuinen
Hyväksyy terveitä vapaaehtoisia
Kuvaus
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:
- 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)
Opintosuunnitelma
Miten tutkimus on suunniteltu?
Suunnittelun yksityiskohdat
- Ensisijainen käyttötarkoitus: Hoito
- Jako: Satunnaistettu
- Inventiomalli: Rinnakkaistehtävä
- Naamiointi: Kaksinkertainen
Aseet ja interventiot
Osallistujaryhmä / Arm |
Interventio / Hoito |
|---|---|
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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.
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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.
Muut nimet:
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Kokeellinen: 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.
|
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.
Muut nimet:
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Mitä tutkimuksessa mitataan?
Ensisijaiset tulostoimenpiteet
Tulosmittaus |
Toimenpiteen kuvaus |
Aikaikkuna |
|---|---|---|
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Number of participants with the composite of all-cause mortality, myocardial infarction, stroke, or new renal failure requiring dialysis
Aikaikkuna: In-hospital for the index procedure or within 28 days of surgery, whichever is longer
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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. |
In-hospital for the index procedure or within 28 days of surgery, whichever is longer
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Toissijaiset tulostoimenpiteet
Tulosmittaus |
Toimenpiteen kuvaus |
Aikaikkuna |
|---|---|---|
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Number of participants who die from any cause by 6 months after surgery
Aikaikkuna: 6 months after surgery
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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).
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6 months after surgery
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Number of participants who die (all-cause surgical mortality)
Aikaikkuna: In-hospital for the index procedure or within 28 days of surgery, whichever is longer
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Death from any cause occurring in-hospital during the index-procedure admission or within 28 days of surgery, whichever is longer.
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In-hospital for the index procedure or within 28 days of surgery, whichever is longer
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Number of participants with postoperative myocardial infarction
Aikaikkuna: In-hospital or within 28 days of surgery, whichever is longer
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Per the Fourth Universal Definition (Type 5, CABG-related).
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In-hospital or within 28 days of surgery, whichever is longer
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Number of participants with postoperative stroke
Aikaikkuna: In-hospital or within 28 days of surgery, whichever is longer
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New central focal neurological deficit confirmed by CT or MRI.
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In-hospital or within 28 days of surgery, whichever is longer
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Number of participants with new renal failure requiring dialysis
Aikaikkuna: In-hospital or within 28 days of surgery, whichever is longer
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KDIGO Stage 3 AKI with initiation of renal replacement therapy, in patients not on chronic dialysis preoperatively.
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In-hospital or within 28 days of surgery, whichever is longer
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Number of participants with postoperative acute kidney injury
Aikaikkuna: Through 28 days postoperatively
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AKI defined by KDIGO criteria (any stage).
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Through 28 days postoperatively
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Number of participants with a postoperative infection
Aikaikkuna: Through 28 days postoperatively
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Through 28 days postoperatively
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Duration of intensive care unit stay
Aikaikkuna: From ICU admission to ICU discharge, up to 28 days
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From ICU admission to ICU discharge, up to 28 days
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Duration of hospital stay
Aikaikkuna: From surgery to hospital discharge, an average of up to 28 days
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From surgery to hospital discharge, an average of up to 28 days
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Yhteistyökumppanit ja tutkijat
Sponsori
Yhteistyökumppanit
Opintojen ennätyspäivät
Opi tärkeimmät päivämäärät
Opiskelun aloitus (Arvioitu)
Ensisijainen valmistuminen (Arvioitu)
Opintojen valmistuminen (Arvioitu)
Opintoihin ilmoittautumispäivät
Ensimmäinen lähetetty
Ensimmäinen toimitettu, joka täytti QC-kriteerit
Ensimmäinen Lähetetty (Todellinen)
Tutkimustietojen päivitykset
Viimeisin päivitys julkaistu (Todellinen)
Viimeisin lähetetty päivitys, joka täytti QC-kriteerit
Viimeksi vahvistettu
Lisää tietoa
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