Does a person with kidney failure still produce urine?

Uremia is a disease that chronic kidney failure patients develop to the terminal stage. Since the kidney function has been completely lost, people with uremia generally have no urine, but there is still urine. The characteristics of urine in uremia patients are increased urine, anemia, metabolic acidosis, and electrolyte disturbance. The main urine manifestations are decreased urine specific gravity, oversaturated urine, positive urine protein, and negative urine sugar.

1. Decreased urine specific gravity: As kidney function has been completely lost, the kidneys cannot maintain the body's water and electrolyte balance, leading to a gradual decrease in urine and decreased urine specific gravity. Patients may manifest as anuria.

2. Oversaturated urine: The glomerular filtration rate of uremia patients has dropped to almost no function, and many toxins accumulate in the body. Although they can still be excreted from the body, some toxins, if accumulated in the human body, can cause damage to the body, so patients will experience excessive urination. In addition, due to lesions in the renal tubules of uremia patients, the water reabsorption function will also decrease, leading to an increase in urine volume.

3. Positive urine sugar: Uremia patients often have diabetes mellitus, and elevated blood sugar can cause positive urine sugar.

4. Positive urine protein: Uremia patients often have nephritis or nephropathy, which can lead to positive proteinuria.

After developing uremia, patients may also experience digestive system symptoms such as nausea, vomiting, and poor appetite, as well as related symptoms such as anemia, acidosis, and electrolyte disturbance. Additionally, there may be an increase in parathyroid hormone secretion, leading to hypercalcemia. If combined with hyperkalemia, patients may experience symptoms such as bradycardia, arrhythmia, and limb numbness.