I15: Secondary hypertension

I15.0: Renovascular hypertension

Renovascular hypertension is a specific type of high blood pressure that primarily results from narrow or blocked arteries leading to the kidneys, known as renal arteries. The condition starts when the decreased blood flow to one or both kidneys occurs, leading the affected kidney(s) to interpret this as a low overall blood pressure. In response, the kidneys release hormones to trigger the body to retain salt and water, which can raise the blood pressure. This type of hypertension can be challenging to regulate because it may not respond well to customary blood pressure medications. Symptoms may not always occur but when they do, they might manifest as high blood pressure, kidney dysfunction, or in severe cases, heart failure. It's important to remember that these symptoms may be related to other conditions, and definitive diagnosis ought to be confirmed by a medical professional.