What is a likely consequence of not treating dehydration in patients with a high BUN level?

In patients with dehydration, especially those presenting with a high Blood Urea Nitrogen (BUN) level, one of the significant concerns is the potential for confusion or altered mental status. High BUN levels can indicate impaired kidney function or dehydration, which can lead to an accumulation of toxins in the bloodstream, affecting brain function.

When dehydration occurs, the body's ability to maintain proper homeostasis is compromised. This can disrupt electrolyte balance and cerebral perfusion, leading to symptoms such as confusion, lethargy, or even more severe neurological deficits. In elderly patients or those with pre-existing cognitive impairment, the risk of confusion increases significantly when dehydration is not addressed. This makes it critical to treat dehydration promptly to avoid complications like confusion and maintain cognitive function.

Improved kidney function, elevated blood pressure, and better circulation are not likely outcomes of untreated dehydration. In fact, untreated dehydration can lead to further deterioration of kidney function and potential complications associated with hypotension from reduced blood volume, which can compromise circulation.