Interstitial fluid or tissue fluid is a solution that bathes and surrounds the tissue cells of multicellular animals.t is the main component of the extracellular fluid, which also includes plasma and transcellular fluid. The interstitial fluid is found in the interstices-the spaces between cells (also known as the tissue spaces).
Cardiogenic shock is a clinical condition of inadequate tissue (end-organ) perfusion due to the inability of the heart to pump an adequate amount of blood. The reduction in tissue perfusion results in decreased oxygen and nutrient delivery to the tissues and, if prolonged, potentially end-organ damage and multi-system failure.
Gavin Joynt. Types of shock. Cardiogenic Shock. blood flow decreased due to an intrinsic defect in cardiac function  either the heart muscle, or the valves are dysfunctional. classical example is acute anterior myocardial infarction, when the amount of damaged ischaemic muscle may be so great that the heart cannot pump anymore.