![]() Normal VO 2 (Oxygen uptake) is about 250mL/min at rest, compared with normal global DO 2 which is about 1000mL/min.Stroke volume determinants include: Preload, afterload, contractility.If there is adequate arterial O 2 concentration, the CO is the main determinant of (DO 2) where:.Hb (g/L), SaO2 %, PaO2 O2 pressure in mmHg, 1.39 is the theoretical O 2 carrying capacity of Hb (also 1.34mL directly measured), 0.003mL = capacity of O 2 in plasma.Oxygen delivery (DO 2) is the product of cardiac output (CO) and the oxcygen content of arterial blood, where:.The consequence of shock is cellular and tissue hypoxia and ultimately cellular death and organ dysfunction.Įarly effects of shock can be reversible, however, a delay in diagnosis or without appropriate and timely treatment can lead to irreversible damage including multiorgan dysfunction syndrome (MODS) and death. It is characteristically (but not always) associated with low blood pressure and impaired tissue perfusion. Shock is a life-threatening state where there is globally insufficient delivery and/or utilisation of oxygen at the cellular level (1). Early recognition and treatment are key to preventing irreversible organ dysfunction.Four main broad categories: Cardiogenic, Hypovolaemic, Obstructive, Distributive.Shock is a life-threatening globally insufficient delivery and/or utilisation of oxygen at the cellular level. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |