In continuing to hijack the thread, I'll offer my comments. I tend to run my Whipples very dry. (In my huge experience of about 6 cases
) Mostly get about 1L in the induction/lines period, and then pretty much replace volume for volume of blood loss only, but tending very much to the dry side. I don't believe in the CVP as a measure of whether or not the patient is behind or over hydrated, and we use it as a portal for inotropes and GIK infusions as required only. On the topic of inotropes, I don't touch Dopamine as I am not convinced that it does the kidneys any good at all. Our institution is very anti-dopamine, and we prefer to use Phenyl, and/or Dobutamine as required. All get a low thoracic epidural which we try and load up in the last hour or so. We also plan to extubate in theatre for that majority of cases, barring any major intraop disaster, although I think our patients in SA tend to be younger and have less comorbidity than your patients. (avg age of the Whipples I've done has been about 45)
As someone else pointed out, I use Acid/Base status to guide fluids, and I also talk to my surgeon a lot about how the bowel feels. If he starts complaining of boggy bowel (the patients bowel, not his!), then I know I've overdone the fluids. Run your patients dry and your surgeons will stay sweet. I'm pretty sure our guys would rather we use judicious inotropy than give them a completely edematous bowel to try and stitch together. If the bowel is edematous at anastomosis, when that fluid comes off, that anastomosis stands a high chance of leaking.
Unfortunately our budget does not extend to TEE, and the use of the Swan is very much the exception rather than the rule.