Precision in Pediatric Care: Navigating the 2024 AmSECT Standards for Perfusion Practice

Introduction: Why Pediatric Perfusion Standards Matter

Perfusionists are specialized allied healthcare professionals whose expertise is rooted in the complex application of extracorporeal science. As critical members of the surgical care team, our scope of practice is defined by the management of life-sustaining extracorporeal devices. To maintain the highest levels of safety and clinical excellence, the American Society of ExtraCorporeal Technology (AmSECT) has established these Standards and Guidelines for Pediatric and Congenital Perfusion Practice.

These standards provide a rigorous framework to guide perfusionists in delivering safe care and assist institutions in the development of their own localized protocols. While these recommendations are evidence-based, they are not intended to supersede clinical judgment. The responsible provider must always prioritize the unique presentation of the patient and their independent clinical experience when making treatment decisions.

The Journey of the Standards: From 2015 to Today

The 2024 standards represent nearly a decade of professional collaboration and rigorous review. The initial development began in October 2015 with discussions between the Pediatric and Congenital Perfusion Committee (PCPC) and AmSECT Leadership. The process underwent several critical milestones:

• June 2017: Initial review by the Peds S&G Subcommittee.
• March–July 2018: Progressive reviews by the PCPC, the Fellows of Pediatric Perfusion, and the ICEBP Committee.
• October 2018–March 2019: Broad membership engagement through an Open Forum in Miami and a "flipped classroom" session at the AmSECT International Meeting.
• Final Approval Phase (2019): Approval by the AmSECT Board of Directors in February, Legal Team review in March, and a final membership vote in April/May 2019.

The original work was published in the Journal of Extracorporeal Technology and co-published in the World Journal for Pediatric and Congenital Heart Surgery in 2020. In 2023, a Task Force was assigned by the PCPC to update these standards. While some early preamble text in the update incorrectly identifies crisis management as Standard 19, the 2024 document officially codifies Standard 19 as "Duty Hours" and introduces the entirely new Standard 22 dedicated to "Crisis Management."

Core Definitions: Understanding the "Language of Compliance"

Effective implementation of these standards requires a precise understanding of the language used to define institutional obligations:

• Standard: Minimum requirements regarding practices, technology, and conduct of care that institutions shall meet to fulfill the requirements of cardiopulmonary bypass.
• Guideline: Recommendations that should be considered to assist in the development and implementation of local protocols.
• Protocol: An institution-specific written document containing decision and treatment algorithms derived from these professional standards.

The document utilizes specific modifiers to define frequency and obligation:

• "Shall" vs. "Should": "Shall" indicates a mandatory requirement recommended by AmSECT for adoption, whereas "should" indicates a recommendation.
• "Continuously" vs. "Continually": "Continuously" describes an action that occurs without ceasing; "continually" describes an action that recurs frequently or regularly.

The Clinical Pillars: Key Standards for Patient Safety

The 22 standards are organized into thematic clusters that form the "clinical pillars" of pediatric safety.

Cluster 1: Preparation and Communication (Standards 1, 3, 5)

Reliability begins with Standard 1.1, which mandates that institutions translate every standard into a localized protocol, reviewed and approved annually by clinical governance. Communication (Standard 3) emphasizes "closed-loop" protocols to verify verbal commands and reduce ambiguity. Furthermore, Standard 5 requires the use of checklists in a "read-verify" manner, ideally confirmed by two people to ensure no critical steps are missed during the peri-operative period.

Cluster 2: Safety and Monitoring (Standards 6, 7)

These standards define the non-negotiable mechanical fail-safes of the extracorporeal circuit. Mandatory safety devices include:

• Arterial line, cardioplegia, and venous reservoir pressure monitors with audible/visual alarms and the capability to interrupt pump flow.
• Gross/macro bubble detectors and level sensors positioned to allow for timely identification and flow cessation.
• One-way valves in vent lines and methods to avoid retrograde flow in centrifugal pumps.

Monitoring must be continuous for patient arterial blood pressure, arterial line pressure, blood flow (distal to intra-circuit shunts), and cerebral oximetry.

Cluster 3: Blood and Fluid Management (Standards 13, 15, 16)

Managing small circulating volumes in pediatric patients requires extreme precision. Standard 13.3 requires the use of pre-bypass ultrafiltration (PBUF) or washed red blood cells when priming with exogenous blood. Per Standard 15, teams must minimize donor exposures. This is reinforced by Guideline 15.4, which states that efforts should be made to reduce the total number of donor exposures and utilize components from the same donor whenever possible.

Technical Deep Dive: Gas Exchange and Anticoagulation

Standard 9.2 mandates the use of specific formulas to evaluate and optimize gas exchange. These must be utilized and documented as follows:

• Indexed Oxygen Delivery: DO2I = 10 x CI x CaO2
• Oxygen Consumption: VO2 = 10 x CI x (CaO2 – CvO2)

Where:

• CaO2 (arterial oxygen content) = (HB x 1.36 x SaO2) + (0.0031 x PaO2)
• CvO2 (mixed venous oxygen content) = (HB x 1.36 x SvO2) + (0.0031 x PvO2)
• CI = cardiac index
• HB = hemoglobin
• SaO2 = arterial oxygen saturation
• PaO2 = partial pressure of oxygen in arterial blood
• SvO2 = venous oxygen saturation
• PvO2 = partial pressure of oxygen in venous blood

Anticoagulation management (Standard 8) requires defined algorithms for heparin targets (ACT) and a clear process for identifying and managing heparin resistance, including the preparation of alternative anticoagulants.

The Human Element: Staffing and Duty Hours

Patient safety is inextricably linked to the well-being and qualifications of the perfusion team.

• The "n+1" Staffing Model: Standard 18.1 requires that the number of qualified perfusionists available must be at least one greater than the number of procedure rooms in use. Crucially, as per Footnote 100, non-qualified staff members (such as students or staff who have not completed training) must not be included in calculating the minimum safe number of staff.
• Duty Hours: Standard 19 addresses fatigue-related risks by requiring adequate rest. Guideline 19.1 recommends a minimum of 8 hours of rest for every 16 hours of consecutive work.
• Onboarding: Standard 2.5 mandates a documented onboarding process to ensure new hires are fully oriented in pediatric-specific responsibilities before performing clinical duties.

Crisis Management and Readiness (Standards 17 & 22)

The 2024 update places significant weight on preparedness for high-risk conversions and unforeseen events.

Standard 17 (Level of Readiness): For procedures identified as having an elevated risk of requiring cardiopulmonary bypass, a specific perfusionist must be assigned to the standby case. Standard 17.3 requires that a heart-lung machine consisting of a sterile extracorporeal set-up and ancillary equipment be readily available.

Standard 22 (Crisis Management): Perfusionists must engage in collaborative efforts to create actionable plans for supply chain interruptions. This includes:

• Identifying alternate vendors for vital equipment (Guideline 22.1).
• Identifying alternate storage and staging areas (Guideline 22.2).
• Maintaining a working knowledge of hospital infrastructure to identify non-routine OR facilities suitable for bypass (Guideline 22.3).
• Establishing procedures for patient evacuation while committed to cardiopulmonary bypass.

Conclusion: Takeaways for the Modern Perfusion Team

Adopting the 2024 AmSECT Standards is a professional mandate for any quality-driven pediatric program. Perfusionists must champion these three critical takeaways:

• Institutional Responsibility: Every institution is mandated by Standard 1.1 to translate these high-level standards into specific, annually reviewed local protocols.
• Data-Driven Quality: Per Standard 20, there is a professional mandate to engage in clinical registries and database collection to drive evidence-based improvements and institutional safety.
• Collaborative Care: Successful outcomes rely on a Surgical Care Team that utilizes closed-loop communication and patient-specific management plans.

By adhering to these standards, we ensure that our extracorporeal support services remain a reliable and safe cornerstone of care for our most vulnerable patients.