vigilante86

I totally agree that oxygen itself isnt considered a diuretic but it does have an indirect diuretic effect. If someone were to implement that as a means to stimulate an increase in urine output it would be more supportive then anything. Like if the person didnt have renal dysfunction and the urine output was on the low end of normal with fluids infusing, O2 could be given just to give a little support to help produce more urine.

Oxygen is actually a vasodilator, not constrictor, which makes sense because it would increase renal perfusion. Hypertension decreases renal perfusion. In patients with CHF it's used because it reduces pulmonary vascular resistance by dilating the pulmonary bed. I can site my source if you want, I had to run and look it up in one of my textbooks just to make sure I was right.