cardioplegic solution
A specialized preservation fluid used to induce cardiac arrest and protect the myocardium during cardiac surgery procedures.
Full Definition
Cardioplegic solution is a carefully formulated preservation medium designed to induce rapid cardiac arrest while providing metabolic support and protection to the myocardium during periods of interrupted coronary circulation. Common formulations include high-potassium crystalloid solutions (St. Thomas', Plegisol) or blood-based preparations that may be supplemented with buffers, osmotic agents, and metabolic substrates. The solution is typically cooled to 4-8°C and administered via antegrade or retrograde routes. Proper preparation, temperature monitoring, and delivery timing are critical for optimal myocardial protection during cardiac surgical procedures.
Usage
Usage note: Use 'cardioplegic' as adjective form; 'cardioplegia' refers to the state of cardiac arrest.
In Context
- "The cardioplegic solution was administered at 4°C through the aortic root immediately after cross-clamp application." — Operative report
- "Laboratory analysis confirmed appropriate potassium concentration in the cardioplegic solution before use." — Perfusion record