GDP Dashboard

Goal-Directed Perfusion parameters for Oxygen Delivery (DO₂I).

Case Inputs

Current CPB parameters.

Clinical Context & Significance

Goal-Directed Perfusion (GDP) represents a proactive shift in cardiopulmonary bypass management. Rather than relying on static flow targets based solely on patient weight or BSA, GDP focuses on maintaining a physiological balance between systemic oxygen delivery ($DO_2$) and the patient's metabolic requirements.

The Critical Threshold

Clinical research (e.g., the GIFT and MICRON studies) has identified a "critical DO₂I" threshold of approximately 280-300 mL/min/m². Falling below this level for significant durations is strongly associated with an increased risk of Postoperative Acute Kidney Injury (AKI), as the kidneys are particularly sensitive to oxygen debt.

Metabolic Monitoring

Oxygen delivery is only one half of the equation. By monitoring oxygen extraction ($O_2ER$) and consumption ($VO_2I$), perfusionists can identify states of high demand—such as inadequate anesthesia depth or systemic inflammatory response—and adjust perfusion parameters accordingly to prevent tissue hypoxia.

Reference: Ranucci M, et al. Oxygen delivery during cardiopulmonary bypass and acute kidney injury after cardiac surgery. Ann Thorac Surg. 2011.

Medical Disclaimer

This application is intended for educational and reference purposes for qualified perfusionists and cardiac surgical professionals. The clinical information and calculations provided should not substitute for professional clinical judgment or institutional protocols. Always verify results with independent calculations and equipment. Perfi does not assume liability for clinical decisions made based on this software.