NCT06462027

Brief Summary

The purpose of this pilot interventional study is to collect preliminary data on administering packed red blood cell (PRBC) during cardiac arrest (CA). The primary objective is to assess the feasibility of PRBC transfusion during cardiac CA to help optimize the methods required to augment cerebral and other vital organ oxygen delivery during cardiopulmonary resuscitation (CPR). The secondary objectives are to assess the effect of PRBC transfusion during prolonged cardiac arrests on cerebral oxygenation, end tidal carbon dioxide (ETCO2), return of spontaneous circulation (ROSC), survival to discharge, biomarkers of neural injury and inflammation, and neurological outcomes at hospital discharge, 30 days post-CA, and 90 days post-CA.

Trial Health

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Monitor

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Trial recruitment is currently suspended
Enrollment
30

participants targeted

Target at P25-P50 for phase_1

Timeline
15mo left

Started Jun 2026

Geographic Reach
1 country

1 active site

Status
suspended

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

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Study Timeline

Key milestones and dates

First Submitted

Initial submission to the registry

June 12, 2024

Completed
5 days until next milestone

First Posted

Study publicly available on registry

June 17, 2024

Completed
2 years until next milestone

Study Start

First participant enrolled

June 1, 2026

Expected
1.1 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

July 1, 2027

2 months until next milestone

Study Completion

Last participant's last visit for all outcomes

September 1, 2027

Last Updated

April 9, 2026

Status Verified

April 1, 2026

Enrollment Period

1.1 years

First QC Date

June 12, 2024

Last Update Submit

April 3, 2026

Conditions

Outcome Measures

Primary Outcomes (6)

  • Time (in mins) to administration of Packed Red Blood Cells (PRBC)

    During Cardiopulmonary Resuscitation (CPR) (up to 20 minutes)

  • Frequency of antibody-mediated transfusion reactions

    Outcome measure will be evaluated for the occurrence of intravascular and extravascular hemolytic reactions by measuring fibrinogen, D-dimer, platelet count, peripheral blood smear, and serum haptoglobin.

    6-72 hours after Return of Spontaneous Circulation (ROSC)

  • Frequency of non-immune reactions

    Non-immune reactions include Transfusion Associated Circulatory Overload (TACO) and Transfusion-Related Acute Lung Injury (TRALI) as determined by the Data Safety Monitoring Committee (DSMC).

    6-72 hours after ROSC

  • Change in frequency of right ventricular (RV) dilatation

    Baseline, up to 20 minutes post administration of PRBC

  • All-cause mortality

    Mortality due to all causes

    Up to 30 days after the last day of study participation

  • Proportion of patients with unfavorable neurological outcomes

    The Cerebral Performance Category (CPC) score is a five-point scale used to assess neurological outcome after cardiac arrest and other events. Scores range from 1 to 5, a score of 1 or 2 is considered a favorable outcome, and scores of 3, 4, or 5 are considered an unfavorable outcome (severe neurological disability, persistent vegetative state or death).

    Up to 30 days post-Cardiac Arrest (CA)

Secondary Outcomes (15)

  • Absolute change in peak regional oxygen saturation (rSO2)

    2 minutes prior to administration, 5 minutes post administration of PRBC

  • Absolute change in mean rSO2

    2 minutes prior to administration, 5 minutes post administration of PRBC

  • Relative change in peak rSO2

    2 minutes prior to administration, 5 minutes post administration of PRBC

  • Relative change in mean rSO2

    2 minutes prior to administration, 5 minutes post administration of PRBC

  • Relative change in peak end tidal carbon dioxide (ETCO2)

    2 minutes prior to administration, 5 minutes post administration of PRBC

  • +10 more secondary outcomes

Study Arms (3)

Packed Red Blood Cells (1 unit)

EXPERIMENTAL

500 mL of packed red blood cells

Drug: Packed Red Blood Cells (1 unit)

Packed Red Blood Cells (2 units)

EXPERIMENTAL

1000 mL of packed red blood cells

Drug: Packed Red Blood Cells (2 units)

Saline solution

PLACEBO COMPARATOR

Treatment of 500 mL of normal saline.

Other: Saline

Interventions

SalineOTHER

Control subjects will receive 500mL of normal saline intravenously.

Saline solution

500 mL of packed red blood cells administered intravenously 10-20 minutes after CA onset, provided Return of Spontaneous Circulation (ROSC) has not been achieved.

Packed Red Blood Cells (1 unit)

1000 mL of packed red blood cells administered intravenously 10-20 minutes after CA onset, provided Return of Spontaneous Circulation (ROSC) has not been achieved.

Packed Red Blood Cells (2 units)

Eligibility Criteria

Age18 Years - 85 Years
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • Adult patients, age ≥18 and \<85 years
  • Experience prolonged, non-trauma-related in-hospital cardiac arrest, defined by cessation of heartbeat and respiration requiring CPR for at least 10 minutes

You may not qualify if:

  • Age \<18 years old
  • Age \> 85 years old
  • Patients with DNR/DNI orders (Do Not Resuscitate/Do Not Intubate)
  • Patients admitted to the hospital with a cardiac arrest arising from trauma
  • Patients who achieve return of spontaneous circulation within 10 minutes of CPR
  • Inability to start study product administration within 20 minutes of cardiac arrest onset
  • Prisoners
  • Women who are known to be pregnant
  • Patients with a history of RBC antibodies or positive antibody screen prior to enrollment in the study, unless previously cross-matched units are available for transfusion.
  • Patients with ultrasound evidence of right ventricular dilatation at time of CA
  • Patients with known prior objection to receipt of blood products.
  • Patients for whom administration of additional fluid volume is contraindicated (as determined by physician responsible for care)
  • Physician objection based on concern that intervention would interfere with patient care plan

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

NYU Langone Health

New York, New York, 10016, United States

Location

MeSH Terms

Conditions

Heart Arrest

Interventions

Sodium Chloride

Condition Hierarchy (Ancestors)

Heart DiseasesCardiovascular Diseases

Intervention Hierarchy (Ancestors)

ChloridesHydrochloric AcidChlorine CompoundsInorganic ChemicalsSodium Compounds

Study Officials

  • Sam Parnia, MD

    NYU Langone Health

    PRINCIPAL INVESTIGATOR

Study Design

Study Type
interventional
Phase
phase 1
Allocation
RANDOMIZED
Masking
DOUBLE
Who Masked
PARTICIPANT, INVESTIGATOR
Purpose
PREVENTION
Intervention Model
PARALLEL
Sponsor Type
OTHER
Responsible Party
SPONSOR

Study Record Dates

First Submitted

June 12, 2024

First Posted

June 17, 2024

Study Start (Estimated)

June 1, 2026

Primary Completion (Estimated)

July 1, 2027

Study Completion (Estimated)

September 1, 2027

Last Updated

April 9, 2026

Record last verified: 2026-04

Data Sharing

IPD Sharing
Will share

The de-identified participant data from the final research dataset used in the published manuscript will be shared upon reasonable request beginning 9 months and ending 36 months following article publication or as required by a condition of awards and agreements supporting the research provided the investigator who proposes to use the data executes a data use agreement with NYU Langone Health. Requests may be directed to: Sam.Parnia@nyulangone.org. The protocol and statistical analysis plan will be made available on Clinicaltrials.gov only as required by federal regulation or as a condition of awards and agreements supporting the research

Shared Documents
STUDY PROTOCOL, SAP
Time Frame
Beginning 9 months and ending 36 months following article publication or as required by a condition of awards and agreements supporting the research.
Access Criteria
The investigator who proposed to use the data upon reasonable request. Requests should be directed to Sam.Parnia@nyulangone.org. To gain access, data requestors will need to sign a data access agreement.

Locations