hi from my experience here in the Philippines post CABG fluid management are some what on the dry side doctors here are afraid of the ill effects of pulmonary congestion post bypass the moment patient is out of or nitrates will be running and and then if bp drops just up your inotropes but most doctors here would want the nitrate to run at least 1mg/hr...due to the massive amount of blood components given during and post by pass diuretics are given once the patient is a little over loaded with fluids they then to want the cvp at around 5 since we dont use swanz that much due to the cost you have to make do with a CVP and SAT from the pulse oxy and then depend on good ol ABG when you think that your pts saturation is down thats probably why the management here is deferent from where you guys practice....i have noticed that by day 2 post bypass my balance will be around 1-1.5L on the dry side and the MD seem to be happy with this