How do you decide if patients without contraindications should receive IV fluids during the pre-operative period if they are undergoing surgery during their hospitalization?  

I agree with Dr. @McNellis. Volume status determination remains subjective, and a combination of urine output (and color!), physical exam, patient history, and vital sign review often provides conflicting information requiring subtle interpretation. Hypervolemia leading to pulmonary edema will often...

This is an interesting question. The concern is that patients with hypovolemia who undergo anesthesia/surgery will develop acute kidney injury and/or hypotension. Conversely, hypervolemia can lead to problems in the postoperative setting (as shown by the ERAS literature). The current ...