Colloid Osmotic Pressure

Colloid osmotic pressure measurement is easy and cannot be derived by reference to protein measurements Its measurement may have a role in predicting prognosis although this is disputed. A low colloid osmotic pressure may influence the choice of resuscitation fluid since crystalloids would depress colloid osmotic pressure further. However, colloids tend to maintain rather than raise colloid osmotic pressure. One of the most important reasons to measure colloid osmotic pressure in critically ill patients is to prevent an excessive rise in patients on renal replacement therapy. Such a rise will prolong the recovery of renal failure.