microplegic solution no. 1

Microplegic Solution No. 1 is a specialized cardioplegia solution used during cardiac surgery to induce and maintain cardiac arrest, allowing surgeons to operate on a still and bloodless heart. Unlike standard cardioplegia, which often uses a mixture of blood and crystalloid in ratios such as 4:1, microplegia typically involves the use of undiluted or minimally diluted patient blood mixed with concentrated additives (such as potassium chloride, magnesium sulfate, lidocaine) delivered via specialized systems like the MPS2 Microplegia delivery machine by Quest Medical. The goal is to provide myocardial protection while minimizing hemodilution and reducing perioperative transfusion requirements[2][7]. Microplegic solutions are designed for rapid onset of cardiac arrest with reduced volume load compared to traditional methods[4][7]. The mechanism of action involves high potassium-induced depolarization arrest of myocardial cells along with adjuncts that stabilize cell membranes and reduce ischemia-reperfusion injury.

Other names

undiluted blood cardioplegiamicroplegia