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PIVOTAL Clinical Training - Transfusion Domain v1.0 21.01.2026

ICNARC CTU

Created on February 27, 2026

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Transcript

Paediatric Intensive Care Adaptive Platform Trial

CLINICAL TRAINING:Blood Transfusion Thresholds Domain

v1.1 09 March 2026

To navigate this training package, use the arrows on either side of the screen

    Use this button to view the contents of the training and move between different sections:

      Click on the three dots in the bottom right hand corner of the screen if you want to navigate to a specific page...

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        PIVOTAL training packs

        There are 4 separate training packs for the PIVOTAL research study. One for ‘core’ platform training and one for each domain:

        • Core platform training: Overall summary of platform, eligibility and examples of scenarios for possible randomisations
        • Fluid domain
        • Sedation domain
        • Blood transfusion thresholds domain

          It is recommended to undertake the core training first

          www.icnarc.org

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          PIVOTAL training packs

          Blood transfusion thresholds domain
          Core platform
          Fluid domain
          Sedation domain

          www.icnarc.org

          www.icnarc.org

          Contents

          • Why this domain in PIVOTAL?
          • Patient flow
          • Platform eligibility – reminder
          • Blood transfusion thresholds domain – eligibility
          • Domain timeline for randomisation
          • Strategies and thresholds
          • Cardiovascular stability assessments
          • Implementation
          • Worked examples
          • Review your knowledge (quiz)
          • Next steps
          • Support and resources
          • Questions
          • Training confirmation form

            www.icnarc.org

            www.icnarc.org

            Why this domain in PIVOTAL?

            Anaemia is common in PICU - up to 74% of children admitted

            Blood transfusions are a core process in PICU

            Anaemia may be harmful by limiting oxygen delivery

            Blood transfusions are commonly used to increase Hb in PICU

            Transfusions may be harmful 10-17% children in PICU receive blood transfusions, more in cardiac ICU

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            www.icnarc.org

            Why this domain in PIVOTAL?

            • Transfusion is a costly biological therapy and carries risks such as Infection, transfusion reactions, fluid overload
              • Associations with increased mortality, worse respiratory function, longer ventilation, delirium
            • Effects of untreated anaemia are less clear but may impact neurodevelopment

            To find out more about current practice, click on the buttons below...

            Variability in UK current practice

            What is current practice informed by?

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            Patient flow

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            Platform eligibility – Reminder

            Must be eligible for platform first, then assess for Transfusion domain

            Inclusion criteria:

            Gestational age at birth ≥37 weeks, or combined gestational age and post-birth age ≥37 weeks, and <16 years at the time of randomisation
            Receiving at least one of respiratory, cardiovascular, or renal support
            Expected to remain on organ support the following day
            Face-to-face contact with PICU or transport team

            Exclusion criteria:

            Previously recruited to a domain in PIVOTAL either in the last 30 days or during the same hospital admission

            Death perceived as imminent

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            www.icnarc.org

            Blood transfusion thresholds - eligibility

            Patients confirmed platform eligible and meet all blood transfusion thresholds eligibility criteria.

            Click below to reveal more information about the domain...
            • Latest Hb less than or equal to the relevant threshold outlined below:

            Use this side of the card to provide more information about a topic. Focus on one concept. Make learning and communication more efficient.

            Inclusion criteria

            Non-cardiac and cardiac patients

            Title

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            Strata

            Subtitle

            Title

            Write a brief description here

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            Blood transfusion thresholds - eligibility

            Click below to reveal more information about the domain...
            • Haemoglobinopathies (e.g. sickle cell disease, thalassemia) where red blood cell transfusions may be used to prevent haemolytic or aggregation crises
            • Unrepaired cyanotic congenital heart disease and/or functionally single ventricle circulation and/or palliated parallel circulation
            • Known advance decision refusing blood/blood component transfusions (e.g. Jehovah’s Witnesses)
            • Receiving Extracorporeal Membrane Oxygenation (ECMO)
            • Receipt of RBC transfusion for a reason other than bleeding or extracorporeal support (on ECMO or for priming renal replacement circuit) since meeting the platform inclusion criteria

            Exclusion criteria

            Title

            Use this side to give more information about a topic.

            Subtitle

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            Blood transfusion thresholds – eligibility criteria: NOTE

            • Patients may become eligible for the Transfusion domain at a later timepoint following randomisation into another domain(s), [Sedation and/or Fluids*]
              • Must become domain eligible before the end of day 4 (calendar days) post-initial randomisation
              • If so, a second randomisation will be used on confirmation of Transfusion domain-specific eligibility
                • Participant list tab on ‘Sealed Envelope’ (randomisation system) – will only show patients who are still within the window to be randomised to transfusion

                *Note: non-cardiac only patients for Fluid domain

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                  Domain timeline for randomisation

                  Once eligible for the Transfusion domain, children will be randomised to a:

                  • Restrictive
                  OR
                  • Liberal
                  red blood cell transfusion strategy The strategy determines the transfusion threshold

                  i.e. a haemoglobin (Hb) level below which they should receive a blood transfusion

                  www.icnarc.org

                  www.icnarc.org

                  Within each strategy, threshold decided by

                  Non-cardiac
                  Cardiac
                  Stratum
                  Acute brain injury (ABI)
                  Disease/age
                  No ABI
                  Neonate
                  Infant/child
                  Low cardiac output state AND
                  • Fluid bolus in last 3 h, or
                  • ↑ in vasoactives in last 3h, or
                  • Lactate>3 in last 3h, or
                  • ScvO2<60% in last 3h, or
                  • NIRS<60%
                  – see next slides for details
                  Cardiovascular status at time of transfusion
                  Fluid bolus in last 3 h, or ↑ in vasoactives in last 3h – see next slides for details

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                  Blood transfusion thresholds

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                  Cardiovascular assessments

                  Click on the buttons below to read more about the assessments by stratum...

                  Non-cardiac patients

                  Cardiac patients

                  Use Administration guide at bedside

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                  Implemention: a series of steps…

                  Click on the numbers below to reveal more about the series of steps...
                  Randomised to restrictive or liberal strategy once domain eligible
                  If Hb equal to or less than higher threshold, assess if cardiovascularly stable or unstable (use Administration guide)
                  Two thresholds given based on stratum and disease/age
                  • If cardiovascularly unstable (higher)
                  • If cardiovascularly
                  stable (lower)
                  If cardiovascularly stable
                  If cardiovascularly unstable
                  (up to 15ml/kg allowed to avoid waste or donor exposure)
                  Wait until Hb equal to or less than lower threshold...
                  Transfuse with 10ml/kg or 1 unit packed red blood cells
                  Transfuse with 10ml/kg or 1 unit packed red blood cells
                  (up to 15ml/kg allowed to avoid waste or donor exposure)

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                  www.icnarc.org

                  This means that it stays in place for the duration of the PICU stay and the child will only receive a blood transfusion if their Hb is less than the corresponding threshold within the strategy.

                  The allocated strategy commences at randomisation and continues until day 30, or PICU discharge, whichever comes first.

                  If a patient is re-admitted to PICU within the 30 days, treatment according to the allocated strategy will be recommenced.

                  Clinical team will guide the frequency of ongoing monitoring of the Hb values.

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                  Blood transfusion thresholds domain

                  Click the triangles to see reasons transfusion thresholds should be suspended temporarily...

                  Bleeding Moderate to severe bleeding, defined as any of the following:
                  • Fresh bleeding in drains ≥ 5ml/kg/hr for at least one hour
                  • Intra-cavity bleeding needing drainage/surgery
                  • The local major haemorrhage protocol is activated
                  Surgical procedures in operating theatre during ICU stay
                  Patient cannulated for ECMO

                  Transfusion thresholds should re-apply once bleeding stopped, return from surgery, decannulated from ECMO.

                  www.icnarc.org

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                  What do I have to do as the bedside nurse when the patient is randomised to the Transfusion Domain? (or team leader supporting less experienced nurses)

                  • At randomisation, the system will tell you which transfusion strategy the patient is allocated to
                    • Restrictive
                    • Liberal
                  • Use the relevant PIVOTAL Transfusion Threshold domain administration guide and keep it at the bedside
                  • Check the patient’s latest Hb, compare to the administration guide to note whether they should or should not receive a blood transfusion
                    • If so, this is prescribed (10ml/kg) and administered following your usual procedures
                  • Document all transfusions/volume received using your usual PICU system
                  • Make sure there is a clear notice at the child’s bedside stating which Transfusion threshold they have been allocated and when they should receive a transfusion
                  • Hand this over at all shift changes
                  • Contact your senior team or research team with any questions

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                  Worked examples

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                  Worked example (1)

                  Harry 10 day old 3.8kg baby admitted with possible sepsis, sedated and ventilated. He is eligible for PIVOTAL:

                  • Sedation domain
                  • Fluid domain
                    He would be eligible for the Transfusion domain if his Hb is less than or equal to 85g/L, now or within 4 days of randomisation into the other domains of PIVOTAL.

                    This is because he is

                    • In the non-cardiac stratum
                    • Does not have acute brain injury

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                    Worked example (1)

                    Harry’s Hb is 74g/L. He is randomised to the Restrictive transfusion strategy. He is currently cardiovascularly unstable (started adrenaline 2 hours ago). BUT he WOULD NOT receive a blood transfusion.

                    This is because he is:

                    • Non-cardiac
                    • Non-ABI
                    Regardless of cardiovascular instability

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                    Worked example (2)

                    Shalina, a 14-year-old girl, suffered a severe traumatic brain injury and pelvic #. She is sedated, ventilated and neuroprotected. She is eligible for PIVOTAL:

                    • Sedation domain
                    • Fluid domain
                    She would be eligible for the Transfusion domain if her Hb is less than or equal to 100g/L, now or within 4 days of randomisation into other PIVOTAL domains.

                    This is because she is

                    • In the non-cardiac stratum
                    • Has acute brain injury (ABI)

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                    Worked example (2)

                    Shalina’s Hb is 69g/L. She is randomised to the Restrictive transfusion strategy. She is currently cardiovascularly stable. She WOULD receive a blood transfusion.

                    This is because she is

                    • In the non-cardiac stratum
                    • Has ABI
                    Regardless of cardiovascular instability

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                    www.icnarc.org

                    Worked example (3)

                    Joe, 4 year old boy admitted post cardiac surgery. He is sedated and ventilated. He is eligible for PIVOTAL:

                    • Sedation domain
                      He would be eligible for the Transfusion domain if his Hb is less than or equal to 100g/L, now or within 4 days of randomisation into other domains of PIVOTAL.

                      This is because he is

                      • In the cardiac stratum
                      • Is >28 days old

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                      Worked example (3)

                      Joe’s Hb is 86g/L. He is randomised to the Restrictive transfusion strategy. He currently is not in a low cardiac output state (LCOS) and is cardiovascularly stable. Therefore, he WOULD NOT receive a blood transfusion.

                      This is because he is

                      • In the cardiac stratum
                      • Age >28d
                      • No signs of CVS instability

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                      Review your knowledge

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                      Review knowledge: Scenario 1

                      Ahmed, an 8-year-old boy (25kg), has been admitted to your PICU for LRTI with a pARDS picture. He’s randomised to all domains of PIVOTAL: i.e. Sedation, Fluid, Transfusion. He has been randomised to the Restrictive transfusion strategy.

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                        Review knowledge: Scenario 1

                        Ahmed, is currently cardiovascular unstable. His Hb is 82g/L.

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                        Review knowledge: Scenario 2

                        Dolly, a 5-day old term baby, is admitted after being found unresponsive at home, by her parents. She was intubated, sedated and ventilated in ED. She is diagnosed with sepsis and has a normal head scan. 2 hours after PICU admission she was randomised to PIVOTAL: Sedation and Fluid domains. This is called Day 1. Her Hb was 87g/L so she was not eligible for the Transfusion domain.

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                        Review knowledge: Scenario 2

                        2 days after her admission to PICU, Dolly’s Hb falls to 81g/L. She is eligible for randomisation. You have not been trained to randomise to PIVOTAL.

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                          Review knowledge: Scenario 2

                          2 days after her admission to PICU, Dolly’s Hb falls to 81g/L. She is randomised to the Liberal strategy of the transfusion domain which means she would receive a blood transfusion if her Hb is: ≤80g/L if cardiovascularly stable ≤85g/L if cardiovascularly unstable as she is being treated for Group B Strep sepsis without ABI.

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                          Review knowledge: Scenario 2

                          5 days later, Dolly remains ventilated and is now on CVVH. Her Hb has fallen to 75g/L.

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                          Review knowledge: Scenario 2

                          Two weeks later, Dolly remains on PICU and is much improved. She is off the ventilator and CVVH. She is cardiovascularly stable. Her Hb is 80g/L.

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                          Next steps

                          Other PIVOTAL training packs available

                          • Core: Recommended to undertake first
                          • Other domains:
                            • Fluid
                            • Sedation

                          www.icnarc.org

                          www.icnarc.org

                          Support and resources

                          Click here

                          • Website:
                            • Core and domain training packs
                            • Administration guides (one per domain)
                            • Trial summary for bedside teaching
                            • Bedside notices
                            • Stickers for charts
                            • AFR assessment form

                          www.icnarc.org

                          www.icnarc.org

                          Questions

                          If you have any questions on this domain or any part of the PIVOTAL trial, please ask your PICU research team first or contact the clinical trials unit at PIVOTAL@icnarc.org

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                            Training confirmation form

                            Once you have completed this training pack, complete the online form via this link:

                              Click here

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                              Answer: No, Dolly should not receive a blood transfusion now. See table below...
                              Answer: No, Dolly should not receive a blood transfusion now. See table below...
                              Cardiac

                              For children in the cardiac stratum, the threshold to be used depends upon clinical assessments of BOTH low cardiac output syndrome and cardiovascular stability. Low cardiac output syndrome: As diagnosed by the treating clinician. Cardiovascular instability Defined as one or more of: (i) a fluid bolus administration in the previous 3 hours, or (ii) vasoactive infusions (e.g., adrenaline, noradrenaline, dopamine, dobutamine, milrinone, vasopressin, angiotensin or methylene blue) started or the rate of infusion increased in the previous 3 hours, or (iii) the most recent measured arterial lactate (within 3 hours) is greater than 3.0 mmol/L, or (iv) the most recent upper body central venous oxygen saturations (ScvO2) (within 3 hours) is less than 60%, or (v) the cerebral or somatic near infra-red spectroscopy (NIRS) measurement is less than 60%

                              Practice largely informed by single multi-centre RCT (TRIPICU)
                              • Nearly 20 years ago
                              • Low proportion of eligible patients recruited
                              • Several exclusions
                              • Recent adult evidence suggest potential neurological benefits from liberal transfusion strategy

                              Current UK practice variable
                              • Median pre-transfusion Hb 78g/L in non-cardiac, 91g/L in cardiac
                              • Higher in cardiovascular instability

                              Non-cardiac

                              For children in the non-cardiac stratum, the threshold to be used depends upon a clinical assessment of cardiovascular stability. Cardiovascular instability Defined as one or more of: (i) a fluid bolus administration in the previous 3 hours, or (ii) vasoactive infusions (e.g., adrenaline, noradrenaline, dopamine, dobutamine, milrinone, vasopressin, angiotensin or methylene blue) started or the rate of infusion increased in the previous 3 hours