Why renal function loss can cause renal failure in patients with nausea and vomiting?

1, renal failure will be caused by increased blood urea nitrogen, urease to decompose urea to ammonia, thereby stimulating the gastrointestinal mucosa cause nausea, vomiting.
2, renal failure, urinary concentration function decline, so many patients with nocturia, caused the blood concentration, thereby causing elevated blood urea nitrogen, so Obviously the symptoms of nausea in the morning.
The experts recommend patients up in the morning, you should pay attention to add moisture to do so can make the blood would not concentrate, while allowing the blood urea nitrogen values ​​remained relatively stable. Thus avoiding the early morning when nausea or vomiting, exacerbation of the phenomenon.