A Quick Reference Tool for Goal-Directed Perfusion in Cardiac Surgery

Area of Science:

• Cardiovascular Surgery
• Perfusion Technology
• Physiological Monitoring

Background:

• Current cardiopulmonary bypass blood flow calculations rely on body surface area (BSA) matching.
• The Goal-Directed Perfusion Trial (GIFT) suggests coupling BSA with oxygen delivery (DO2) is a safer approach.
• Perfusionists need a practical tool for determining optimal blood flow during bypass.

Purpose of the Study:

• To develop a reference tool for Goal-Directed Perfusion (GDP).
• To enable quick determination of the lowest acceptable blood flow for satisfactory DO2.
• To provide a method independent of specialized monitoring equipment.

Main Methods:

• Derived a formula for blood flow based on BSA, blood oxygen content, and a minimum DO2 of 280 mL·min-1m-2.
• Created a quick reference chart using the derived formula.
• The tool requires only patient BSA and hemoglobin levels.

Main Results:

• A practical GDP reference tool was developed.
• The tool allows calculation of safe minimum blood flow rates.
• It facilitates GDP adoption without advanced DO2 monitoring technology.

Conclusions:

• The developed GDP tool simplifies achieving adequate oxygen delivery during cardiopulmonary bypass.
• It offers a practical and accessible method for optimizing blood flow in cardiac surgery.
• This approach enhances patient safety by ensuring sufficient DO2 levels.