What Is a Cardioplegia Delivery Set?
A Cardioplegia Delivery Set is a tubing system with connectors, heat exchanger, and flow control mechanisms that delivers this cardioplegic solution from the machine to the patient’s heart.
It precisely controls:
- Temperature (warm, cold, or tepid cardioplegia)
- Flow rate and pressure
- Mixture ratio of blood and crystalloid solution
đŸ§© Main Components
A typical Cardioplegia Delivery Set includes:
| Component | Function |
| Inlet Tubing Lines | Carry cardioplegia solution (blood or crystalloid) from the Heart–Lung Machine |
| Heat Exchanger | Controls the temperature of the cardioplegia fluid (usually cooled to 4–10°C) |
| Mixing Chamber | Mixes oxygenated blood and cardioplegia solution in desired ratios (e.g., 4:1, 8:1) |
| Bubble Trap or Filter | Removes air bubbles and microemboli before entering the heart |
| Delivery Line (Outlet Tubing) | Delivers the solution to the heart through cannulas (anterograde or retrograde) |
| Pressure Monitoring Line | Monitors infusion pressure to avoid vessel damage |
| Temperature Probe Port | Measures temperature of the delivered cardioplegia |
đŸ§ª Materials
- Made from biocompatible, medical-grade PVC or polyurethane
- Latex-free and DEHP-free (to reduce allergic or toxic risks)
- Sterile single-use device
- Often includes heparin-coated surfaces to prevent clot formation
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