- Acute renal failure - causes and consequences
- What's happening
What is acute renal failure
Acute renal failure (ARF) - a sudden disruption of renal blood flow, and the ability of the kidneys to excrete fluid and waste, unwanted body (often toxic) substances. Acute renal failure may occur at any age (but typically 20-40 years) due to acute, usually reversible kidney damage.
What happens to the kidneys at the time of acute renal failure
With insufficient blood flow to the kidney tissue not received nutrients and oxygen, so going on dying (necrosis) of tissue. Such damage kidney tissue entails a malabsorption of sodium, which leads to the release into the blood reflex vasoconstrictor and aggravates kidney blood flow. It is a vicious circle, the kidney is actually disconnected from the blood supply, poisonous substances poison the body.
Signs of acute renal failure
First, there are signs caused by the specific cause of the disease, then there are common signs of acute renal failure: chills, fever, decreased blood pressure
Blood pressure - dangerous if his swing?
, Pallor and blueness of the skin, combined with rapidly increasing jaundice, urine becomes dark, it appears white and the blood.
The next period (can last an average of two weeks, but sometimes up to 1, 5 months) - the appearance of small amounts of urine, or complete lack thereof (less than 500 ml per day), an increase in the blood of the decay products of proteins, salt malabsorption. Patients complain of weakness, palpitations, loss of appetite, headache, drowsiness, nausea, vomiting. There are also signs of nervous system, memory loss, agitation, convulsions, paralysis. Drowsiness may be replaced by a loss of consciousness and coma.
The period of restoration of renal blood flow
The recovery period consists of two phases. In the first phase there is a small amount of urine (oliguria, to 500 ml per day, lasts two-three days), the second - high (polyuria, to several liters of urine per day for up to 20 days). In the first phase all the signs of acute renal failure may even increase, the second phase because of the very large amounts of urine may become dehydrated, patients lose weight, the skin becomes dry, there is thirst, weakness, pain in the heart
Pain in the heart - always consult a doctor
. Gradually, the amount of blood decreases the decay of food products, decreased urine volume, the patient's condition improves.
Severe complication of acute renal failure is necrosis (death of) the renal cortex. Its appearance is dominated by the duration and degree of impairment of renal blood supply, sometimes we can not exclude such a complication of allergic mechanisms. The recovery period may be frequent complications edema
Prevention and treatment of edema - it is important to understand the root cause
light (a consequence of the stagnation of blood in the lungs) and pyelonephritis (kidney infection development).
Treatment of renal failure
Kidney failure - when treatment is vital
always complex and involves mandatory treatment of the underlying disease that caused acute renal failure, correction of disorders of blood circulation and metabolic disorders (removal of the decay products of protein, restoration of water-salt and acid-base balance).
Appointed diet with restriction of protein (exclude meat, fish, dairy products) and an increased amount of liquid. Also excluded products with more potassium (bananas, gaiter) as potash body and so delayed.
If signs of acute renal failure continues to increase, the patients underwent blood purification using an artificial kidney (hemodialysis).
With timely and properly conducted treatment of the kidneys recovered without any consequences.