Kidney and its some complicacies
There is no denying the fact that the urinary system comprises of
the kidneys, ureters, bladder, and urethra. The kidneys are two bean-shaped
organs positioned beneath the ribs toward the middle of the back. The kidneys
remove extra water and wastes from the blood, converting it to urine. They also
keep a stable balance of salts and other substances in the blood.
The kidneys bring into being hormones that help build brawny bones
and help form red blood cells. Narrow tubes called ureters carry urine from the
kidneys to the bladder, an oval-shaped chamber in the lower abdomen. Like a
balloon, the bladder's stretchy walls and develop to store urine. They compress
together when urine is emptied through the urethra to outside the body.
Kidney stone is a hard mass developed from crystals that separated
from the urine and build up on the inner surfaces of the kidney. Normally,
urine contains chemicals that prevent or inhibit the crystals from forming.
These inhibitors do not seem to work for everyone, however, so some people form
stones. If the crystals remain tiny enough, they will travel through the
urinary tract and pass out of the body in the urine without being noticed.
Kidney stones may contain various combinations of chemicals. The most common
type of stone contains calcium in combination with either oxalate or phosphate.
These chemicals are part of a person's normal diet and make up important parts
of the body, such as bones and muscles.
A less common type of stone is caused by infection in the urinary
tract. This type of stone is called a struvite or infection stone. A bit less
common is the uric acid stone. Cystine stones are rare.
Urolithiasis is the medical term used to describe stones occurring
in the urinary tract. Other frequently used terms are urinary tract stone
disease and nephrolithiasis. Doctors also use terms that describe the location
of the stone in the urinary tract. For example, a ureteral stone (or
ureterolithiasis) is a kidney stone found in the ureter. To keep things simple,
however, the term "kidney stones" is used throughout this fact sheet.
Gallstones and kidney stones are not related. They form in
different areas of the body. If you have a gallstone, you are not necessarily
more likely to develop kidney stones.
For unknown reasons, the number of people in the United States
with kidney stones has been increasing over the past 30 years. The prevalence
of stone-forming disease rose from 3.8 percent in the late 1970s to 5.2 percent
in the late 1980s and early 1990s. White Americans are more prone to develop
kidney stones than African Americans. Stones occur more frequently in men. The
prevalence of kidney stones rises dramatically as men enter their 40s and
continues to rise into their 70s. For women, the prevalence of kidney stones
peaks in their 50s. Once a person gets more than one stone, others are likely
to develop. Doctors do not always know what causes a stone to form. While
certain foods may promote stone formation in people who are susceptible,
scientists do not believe that eating any specific food causes stones to form
in people who are not susceptible. A person with a family history of kidney
stones may be more likely to develop stones. Urinary tract infections, kidney
disorders such as cystic kidney diseases, and certain metabolic disorders such
as hyperparathyroidism are also linked to stone formation. In addition, more
than 70 percent of people with a rare hereditary disease called renal tubular
acidosis develop kidney stones.
Cystinuria and hyperoxaluria are two other rare, inherited
metabolic disorders that often cause kidney stones. In cystinuria, too much of
the amino acid cystine, which does not dissolve in urine, is voided. This can
lead to the formation of stones made of cystine. In patients with
hyperoxaluria, the body produces too much of the salt oxalate. When there is
more oxalate than can be dissolved in the urine, the crystals settle out and
form stones.
Hypercalciuria is inherited. It is the cause of stones in more
than half of patients. Calcium is absorbed from food in excess and is lost into
the urine. This high level of calcium in the urine causes crystals of calcium
oxalate or calcium phosphate to form in the kidneys or urinary tract.
Other causes of kidney stones are hyperuricosuria which is a
disorder of uric acid metabolism, gout, excess intake of vitamin D, urinary
tract infections, and blockage of the urinary tract. Certain diuretics which
are commonly called water pills or calcium-based antacids may increase the risk
of forming kidney stones by increasing the amount of calcium in the urine.
Calcium oxalate stones may also form in people who have a chronic
inflammation of the bowel or who have had an intestinal bypass operation, or
ostomy surgery. As mentioned above, struvite stones can form in people who have
had a urinary tract infection. People who take the protease inhibitor
indinavir, a drug used to treat HIV infection, are at risk of developing kidney
stones.
Kidney stones often do not cause any symptoms. Usually, the first
symptom of a kidney stone is extreme pain, which occurs when a stone acutely
blocks the flow of urine. The pain often begins suddenly when a stone moves in
the urinary tract, causing irritation or blockage. Typically, a person feels a
sharp, cramping pain in the back and side in the area of the kidney or in the
lower abdomen. Sometimes nausea and vomiting occur. Later, pain may spread to
the groin. If the stone is too large to pass easily, pain continues as the
muscles in the wall of the tiny ureter try to squeeze the stone along into the
bladder. As a stone grows or moves, blood may appear in the urine. As the stone
moves down the ureter closer to the bladder, you may feel the need to urinate
more often or feel a burning sensation during urination.
If fever and chills accompany any of these symptoms, an infection
may be present. In this case, you should contact a doctor immediately.
Sometimes "silent" stones-those that do not cause
symptoms-are found on x rays taken during a general health exam. If they are
small, these stones would likely pass out of the body unnoticed.
More often, kidney stones are found on an x ray or sonogram taken
on someone who complains of blood in the urine or sudden pain. These diagnostic
images give the doctor valuable information about the stone's size and
location. Blood and urine tests help detect any abnormal substance that might
promote stone formation.
The doctor may decide to scan the urinary system using a special
test called a CT (computed tomography) scan or an IVP (intravenous pyelogram).
The results of all these tests help determine the proper treatment.
Fortunately, surgery is not usually necessary. Most kidney stones
can pass through the urinary system with plenty of water (2 to 3 quarts a day)
to help move the stone along. Often, you can stay home during this process,
drinking fluids and taking pain medication as needed. The doctor usually asks
you to save the passed stone(s) for testing. (You can catch it in a cup or tea
strainer used only for this purpose.)
If you've had more than one kidney stone, you are likely to form
another; so prevention is very important. To prevent stones from forming, your
doctor must determine their cause. He or she will order laboratory tests,
including urine and blood tests. Your doctor will also ask about your medical history,
occupation, and eating habits. If a stone has been removed, or if you've passed
a stone and saved it, the laboratory should analyze it because its composition
helps in planning treatment.
You may be asked to collect your urine for 24 hours after a stone
has passed or been removed. The sample is used to measure urine volume and
levels of acidity, calcium, sodium, uric acid, oxalate, citrate, and cretonne
(a product of muscle metabolism). Your doctor will use this information to
determine the cause of the stone. A second 24-hour urine collection may be
needed to determine whether the prescribed treatment is working.
A simple and most important lifestyle change to prevent stones is
to drink more liquids-water is best. If you tend to form stones, you should try
to drink enough liquids throughout the day to produce at least 2 quarts of
urine in every 24-hour period.
People who form calcium stones used to be told to avoid dairy
products and other foods with high calcium content. But recent studies have
shown that foods high in calcium, including dairy products, may help prevent
calcium stones. Taking calcium in pill form, however, may increase the risk of
developing stones.
You may be told to avoid food with added vitamin D and certain
types of antacids that have a calcium base. If you have very acidic urine, you
may need to eat less meat, fish, and poultry. These foods increase the amount
of acid in the urine.
To prevent cystine stones, you should drink enough water each day
to dilute the concentration of cystine that escapes into the urine, which may
be difficult. More than a gallon of water may be needed every 24 hours, and a
third of that must be drunk during the night.
Foods and Drinks Containing Oxalate
People prone to forming calcium oxalate stones may be asked by
their doctor to cut back on certain foods if their urine contains an excess of
oxalate:
- beets
- chocolate
- coffee
- cola
- nuts
- rhubarb
- spinach
- strawberries
- tea
- wheat
bran
People should not give up or avoid eating these foods without
talking to their doctor first. In most cases, these foods can be eaten in
limited amounts.
The doctor may prescribe certain medications to prevent calcium
and uric acid stones. These drugs control the amount of acid or alkali in the
urine, key factors in crystal formation. The drug allopurinol may also be
useful in some cases of hyperuricosuria.
Doctors usually try to control hypercalciuria, and thus prevent
calcium stones, by prescribing certain diuretics, such as hydrochlorothiazide.
These drugs decrease the amount of calcium released by the kidneys into the
urine by favoring calcium retention in bone. They work best when sodium intake
is low.
Very rarely, patients with hypercalciuria may be given the drug
sodium cellulose phosphate, which binds calcium in the intestines and prevents
it from leaking into the urine.
If cystine stones cannot be controlled by drinking more fluids,
your doctor may prescribe drugs such as Thiola and Cuprimine, which help reduce
the amount of cystine in the urine. For struvite stones that have been totally
removed, the first line of prevention is to keep the urine free of bacteria
that can cause infection. Your urine will be tested regularly to be sure that
no bacteria are present.
If struvite stones cannot be removed, your doctor may prescribe a
drug called acetohydroxamic acid (AHA). AHA is used with long-term antibiotic
drugs to prevent the infection that leads to stone growth.
People with hyperparathyroidism sometimes develop calcium stones.
Treatment in these cases is usually surgery to remove the parathyroid glands
(located in the neck). In most cases, only one of the glands is enlarged.
Removing the glands cures the patient's problem with hyperparathyroidism and
with kidney stones as well.
Surgery should be reserved as an option for cases where other
approaches have failed. Surgery may be needed to remove a kidney stone if it
- does
not pass after a reasonable period of time and causes constant pain
- is
too large to pass on its own or is caught in a difficult place
- blocks
the flow of urine
- causes
ongoing urinary tract infection
- damages
kidney tissue or causes constant bleeding
- Has
grown larger (as seen on follow-up x ray studies).
Until 20 years ago, surgery was necessary to remove a stone. It
was very painful and required a recovery time of 4 to 6 weeks. Today, treatment
for these stones is greatly improved, and many options do not require major
surgery.
Extracorporeal shockwave lithotripsy (ESWL) is the most frequently
used procedure for the treatment of kidney stones. In ESWL, shock waves that
are created outside the body travel through the skin and body tissues until
they hit the denser stones. The stones break down into sand-like particles and
are easily passed through the urinary tract in the urine.
In most cases, ESWL may be done on an outpatient basis. Recovery
time is short, and most people can resume normal activities in a few days.
Complications may occur with ESWL. Most patients have blood in
their urine for a few days after treatment. Bruising and minor discomfort in
the back or abdomen from the shock waves are also common. To reduce the risk of
complications, doctors usually tell patients to avoid taking aspirin and other
drugs that affect blood clotting for several weeks before treatment.
Another complication may occur if the shattered stone particles
cause discomfort as they pass through the urinary tract. In some cases, the
doctor will insert a small tube called a stent through the bladder into the
ureter to help the fragments pass. Sometimes the stone is not completely
shattered with one treatment, and additional treatments may be needed. ESWL is
not ideal for very large stones.
Sometimes a procedure called percutaneous nephrolithotomy is
recommended to remove a stone. This treatment is often used when the stone is
quite large or in a location that does not allow effective use of ESWL.
One advantage of percutaneous nephrolithotomy over ESWL is that
the surgeon removes the stone fragments instead of relying on their natural
passage from the kidney.
Although some kidney stones in the ureters can be treated with
ESWL, ureteroscopy may be needed for mid- and lower-ureter stones. No incision
is made in this procedure. Instead, the surgeon passes a small fibrotic
instrument called an ureteroscope through the urethra and bladder into the
ureter. The surgeon then locates the stone and either removes it with a
cage-like device or shatters it with a special instrument that produces a form
of shock wave. A small tube or stent may be left in the ureter for a few days
to help the lining of the ureter heal. Before fiber optics made ureteroscopy
possible, physicians used a similar "blind basket" extraction method.
But this outdated technique should not be used because it may damage the
ureters.
CIDPUSA has carried out a research work to provide us with herbal and
homeopathic treatment that will remove all stones at home. We should try this at home at the moment.
People who had surgeons should tell them that they were at surgical risk have
been helped by cidpusa protocol of herbs at home.
- If
we have a family history of stones or have had more than one stone, you
are likely to develop more stones.
- A
good first step to thwart the formation of any type of stone is to drink
plenty of liquids-water is best.
- If
you are at risk for developing stones, your doctor may perform certain
blood and urine tests to determine which factors can best be altered to
reduce that risk.
- Some
people will need medicines to prevent stones from forming.
- People
with chronic urinary tract infections and stones will often need the stone
removed if the doctor determines that the infection results from the
stone's presence.
In view of the above, it is evident that a doctor has a held back
duty to serve the patients on compassionate grounds. A doctor needs a patient
and as such the patients need service of the doctor who is found considerate as
well as dutiful personality. In the above tribulations and complicacy, the
doctors must have accountability in order to take care of the patients.
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