High blood pressure does not normally have major symptoms for a person to be aware of, hence the reason the disease is often referred to as the “silent killer”. The undetected symptoms left untreated could cause more serious problems such as heart disease, stroke or kidney disease. A persons’ urine habits however, could hold many clues to their blood pressure levels and when a person experiences a low urine output it could be a major symptom of high blood pressure.
Low urine output, or no urine output, occurs in the setting of kidney failure as well as in urinary obstruction.
Decreased urine output means that a person produces less urine than normal. Low urine content, also known as oliguria, is when a person produces less than 400ml urine a day.
It is a major sign of high blood pressure and could be life-threatening.
Other symptoms of low urine output:
- Kidney failure
- Hypovolemic shock
- Multiple organ dysfunction syndrome
- Urinary tract infection
As the kidneys fail or become compromised in their ability to function, the kidneys lose the ability to regulate fluids and electrolytes and to remove waste products from the body.
Low urine output also occurs when there is a decreased blood supply to the kidneys due to dehydration or excessive blood loss.
Chronic renal failure develops over time and can result from poorly controlled high blood pressure.
Blood pressure UK said: “How healthy your kidneys are can affect your blood pressure, and vice versa.
“This means that if you have high blood pressure, then you are more likely to to have kidney disease. Likewise, if you have kidney disease, this can sometimes cause high blood pressure.”
In a 2012 study with US National Library of Medicine National Institutes of Health looked at a decreased urine output and acute kidney injury and found the major cause for both was hypertension or high blood pressure.
In a 2003 study blood pressure and urine protein levels were studied and found that the levels of blood pressure and protein in urine that is associated with kidney disease were prevalent.
It also found that a higher systolic blood pressure reading was strongly related to a risk for worsening kidney function.
High blood pressure can damage blood vessels in the kidneys, reducing their ability to work properly.
When the force of blood flow is high, blood vessels stretch so blood flows more easily.
Eventually, this stretching scars and weakens blood vessels throughout the body, including those in the kidneys.
If you suspect you might be developing high blood pressure due to a low urine content you should speak with your GP and do a urine and blood test and get screened for kidney disease.