Subendocardial Blood Flow Determinants

Editor’s Note: Subendocardial Blood Flow Determinants While subendocardial and sub-epicardial layers have the same determinants for blood flow, subendocardial layers are at greater risk from ischemia and infarction.  The deeper subendocardium is subjected to greater wall tension which then expresses as a metabolic requirement 10-20% greater than the more superficial epicardium. Higher oxygen demand and […]

Myocardial Oxygen Balance

Myocardial Oxygen Balance Maintaining the blood’s oxygen carrying capacity to vital organ structures and peripheral vascular beds is the primary consideration for cardiovascular perfusion. Oxygen content is defined as the number of cc’s contained in 100 cc of whole blood.  This value is derived from a combination of physical and physiological parameters that can be […]