Possible damages to the kidneys by hypertension

Untreated hypertension can cause damages to the kidneys.

Hypertension and its arteriosclerotic changes are especially harmful for the smallest blood vessels in the kidneys, which represent part of the kidney filtration system (nephrosclerosis). If diabetes mellitus (diabetes) is added to the high blood pressure, the kidneys are particularly at risk. In the case of kidney damage, the regulation of the fluid balance is impaired and the accumulation of metabolic waste products occurs in the body. This is known as impaired renal function. In addition, due to the damaged filter system the kidneys can now no longer hold back substances, e.g. certain proteins (albumin),    which are also important for the body. They are consequently increasingly excreted in the urine (microalbumuria and/or macroalbuminuria/proteinuria).

A deterioration of the renal blood flow not only impairs the excretory function of kidneys, but also activates a blood pressure regulating (hypertensive) hormone system in the kidney tissue, the renin-angiotensin-aldosterone system which in turn, leads to an increase in blood pressure. Untreated, these changes can lead to chronic kidney weakness and even kidney failure.

Consequences of hypertension