Renal colic: a kidney stone that makes the pain unbearable - Renal colic is an acute pain from lumbar pit that is due to the presence of an obstacle in one of the excretory ducts of the kidney: the "ureters". This barrier is most often a calculation, or "kidney stones" which causes the accumulation of urine and the distension of the ureter and kidney upstream.
Renal colic: a kidney stone that makes the pain unbearable
Renal colic: UNDERSTANDING
Words for sore
A kidney stone is also called a "kidney stones."
The calculation seat in the urinary tract (the "ureter" and "chalice") kidney: they serve to eliminate urine that is normally produced by the kidneys.
What is a renal colic?
Renal colic is severe pain sitting mostly in the lumbar region on one side of the back, but sometimes in the abdomen or groin.
Renal colic pain is linked to distention of the upper urinary tract and kidney. This increase in pressure due to the presence of an obstacle to the evacuation of urine, which distends the upper urinary tract in the kidney.
The obstacle is most often a kidney stone, also known as "kidney stones", but it can be an external urinary tract compression of the kidneys, "ureters". The calculation when there is the most often located at the top portion of a ureter or in the kidney, at a "chalice".
Some substances normally eliminated in the urine (calcium oxalate, calcium phosphate, cystine, uric acid ...), when in excessive concentration and prolonged form crystals in the upper urinary tract ( "ureters" or "cups" the kidneys) or into the bladder. These crystals can then aggregate and form small "pebbles" urinary stones or kidney stones, which can block the ureter through which urine is discharged normally.
Spontaneously or under the effect of the treatment, the calculation when it is small, descends along the ureter through the bladder and its outlet channel "urethra," to be discharged in the urine : 68% of cases, for calculations of less than five millimeters and only 47% for calculations of five to ten millimeters.
What are the signs of renal colic?
When they are small, calculations can be eliminated by natural means and can sometimes cause blood in the urine. The "renal colic", the best known manifestation of urolithiasis, occurs when the calculation hangs in the urinary tract of the kidneys, ureters.
• The sudden and intense pain is related to the distension of the urinary tract upstream of the calculation or the obstacle. It appears no real trigger, rather in the morning and night.
• The pain is short-lived, but repeated, alternating periods of lull incomplete (dull pain between seizures) and unbearable pain.
• Pain seat on one side as the obstacle is present in one of the ureters, either right or left.
• Typically, the pain occurs in the back, at a lumbar pit descends and rotates forward towards the abdomen ( "belly") or groin or genitals.
• No position relieves the pain (no "analgesic position"), which is accompanied by an incessant bustle of the sufferer ( "frantic colic").
• The pain may be accompanied by gastrointestinal symptoms (nausea, vomiting, bloating caused by the accumulation of intestinal gas) which can roam diagnosis, and urinary symptoms (frequent urination, urgent need to urinate, presence of blood in urine sometimes) which rectifies the diagnosis.
• There is no fever if renal colic is not complicated by infection.
The renal colic lasts about ten minutes to a few hours and resumed whenever the calculation is stuck in its downward path in the ureter. The location of the pain rarely corresponds to the topography of the calculation.
can therefore renal colic signs sometimes be misleading and do think for example to a stomach disease or genitals.
What are the causes of renal colic?
In 80% of cases, the obstacle on the urinary tract is a kidney stone. A calculation is a kind of small pebble more or less regular, formed by the concretion of mineral salts present in excess in urine. In 70-80% of cases now, it is calcium oxalate and this is called "calcium stones."
Changes in eating habits, health conditions and environmental factors, and the greater frequency of diseases that predispose to the risk of nephrolithiasis (obesity, diabetes, metabolic syndrome ...), the frequency of different types of stones were modified: gallstone was essentially composition phosphatic or uric and bladder seat before the twentieth century, is now high renal seat and calcium oxalate in 70 to 80% of cases (calcium phosphate in 14% of cases and uric acid in 11% of cases).
There are, moreover, often a familial predisposition to the onset of urinary lithiasis. People who have high blood uric acid levels (those prone to gout attacks) have a higher risk of uric stones. In people who have a urinary leak calcium ( "idiopathic hypercalciuria family"), the calcium oxalate stones are more common.
Insufficient hydration and a diet high in protein and salt promotes the formation of urinary stones of calcium oxalate in susceptible individuals (it is useless to restrict dietary calcium and dairy products).
People who suffer from obesity, diabetes and metabolic syndrome with high blood pressure also have a higher risk of nephrolithiasis.
A disorder of the parathyroid glands ( "hyperparathyroidism") that control calcium levels in the blood with moderate chronic hypercalcemia may also be involved. Rarely, it is possible to find intoxication vitamin D.
In other cases, the origin of renal colic may be related to compression of the extrinsic ureter, usually in the pelvis. A tumor of the urinary tract ( "urothelial") or an anatomical abnormality of the urinary tract can also cause renal colic without kidney stone.
In some cases, no cause is found, which often corresponds to the spontaneous elimination of a calculation small.
What are the complications of renal colic?
The main complication of renal colic is superinfection of the urine and kidney ( "pyelonephritis"), due to the stagnation of urine and distension of the urinary tract upstream of the calculation, which exposes a generalized infection ( "sepsis ").
The persistent distension may result in stopping the flow of urine ( "anuria") if there is only one functional kidney with acute renal failure.
Repeating renal colic can lead to a risk of deterioration of kidney function upstream from and, in particular in case of pre-existing chronic renal insufficiency.
Non-steroidal anti-inflammatory drugs, which are often used to facilitate the evacuation of a small calculation, may aggravate a pre-existing chronic renal insufficiency.
Renal colic may be serious for pregnant women.
Renal colic: a kidney stone that makes the pain unbearable
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