Maintenance level of Mixed Venous Oxygen Saturation in shock must be

Mixed Venous Oxygen Saturation: - * This is a measure of oxygen returning to hea from body after delivery and extraction by tissues. * Normal Value- 50-70% * In cardiogenic shock and Hypovolemic shock, the tissues takes up more oxygen and hence value is low < 50% * In Septic and Distributive shock , the tissues takes up less oxygen and hence more oxygenated blood returns to hea and hence value is high > 70% Ref:- Surgery Sixer 3rd Edition; Pg num:- 8