I agree with above poster. I have just a little to add to help you go into the right direction (hopefully).
Is D5 1/2 NS appropriate for pneumonia? How does one determine this? First:
We need to determine tonicity
. Or, in other words, is this fluid hypertonic, hypotonic, or isotonic? Once you figure out tonicity, you should be able to determine what is happening to the cells (action of the fluid). Once you figure the cellular issue, you should be able to determine a general reason for this fluid with pneumonia.
Furthermore, what are the type of solutes/substances
are in this fluid? What are their purpose?
It's important to be generally familiar with the pathophysiology of pneumonia. Your familiarity will help you determine the reason for the fluid as well as if this particular fluid would be appropriate.
I agree that this would be an MD call as well as probably vary by preference. However, if we understand the action of the fluid and the pathophysiology, we could generally determine the appropriateness
of the fluid. Fluids are a medication too.
We have to be aware if these are appropriate and safe for the patient.