Why D5NM solution used in pneumonia patient?

D5NM (5% dextrose in normal saline) solution is often used in pneumonia patients to provide hydration and maintain electrolyte balance while delivering calories. The dextrose offers a source of energy, which can be beneficial for patients who may have increased metabolic demands due to infection. Additionally, the saline component helps to replenish sodium and chloride levels, supporting overall fluid balance. This solution is particularly useful in managing patients who are unable to maintain adequate oral intake.