How To Manage The Pain Of Kidney Stones?

Marked by an agonizing, excruciating and intolerable pain, kidney stones account for over 1 million annual emergency room visits in the United States. The pain usually starts in the upper flank, as a sudden twinge on the side, escalates to the loins and migrates to the front of the body. The sharp stabbing pain of kidney stones is worse than childbirth pain and quickly makes it impossible to function. It is important for you to know how to prevent kidney stones and how to deal with the pain if you get the stones.

What are kidney stones?

Kidney stones are small, hard pebble-like lumps formed when there are high levels of various minerals in urine. The minerals and other substances crystallize and form hard masses before they can be flushed away. Classic stones are a blend of calcium and oxalate (an organic acid found in urine), but lumps of uric acid, calcium phosphate and other substances also may form. A stone may sit in the kidney or ureter with little or no pain. But often when the stone leaves the kidney or gets stuck in the ureter, it blocks the flow of urine and causes pain.

Symptoms of kidney stones

When a kidney stone moves around in the kidney or gets lodged in the ureter, it may block the passage of urine. Such a blockage causes:

  1. Sharp, stabbing pain on the side or in the back.
  2. Painful urination.
  3. Pain episodes that come and go.
  4. Blood in urine.
  5. Fever, nausea and vomiting in case of an infection.

Kidney stones are perhaps the most painful condition known. In fact, most patients with stones often find themselves in the hospital emergency department. In all cases of pain due to suspected kidney stones, urologists first rule out other possible causes of pain, such as bowel, gynecologic and musculoskeletal problems. The presence of kidney stones is confirmed by X-rays or CT scans. Blood and urine tests also may be used to assess the levels of various stone-forming substances in your system.

Managing Pain Due To Kidney Stones

Once it is confirmed that you have kidney stones, the urologist will give you intravenous painkillers to relieve pain. You then will be sent home with oral drugs (such as acetaminophen, aspirin, diuretics, and antibiotics) to use as you wait for the stone to pass out of your system. Drinking plenty of water, taking hot showers, sitting in a warm water tub and taking drugs that dilate the ureter will bring relief and allow the stone to pass. Eventually the agony will end when the stone passes out.

Smaller stones are more likely to pass on their own. In fact, 80 percent of kidney stones are usually less than 4 mm in diameter and typically pass on their own, though that takes up to 31 days. It is more difficult for larger stones to pass on their own. Stones of 4-6 mm in diameter tend to pass on their own 60 percent of the time while those larger than 6 mm only pass out 20 percent of the time. Therefore in most cases, a non-invasive or minimally-invasive medical procedure is necessary to remove stones larger than 4 mm and those stuck in the ureter.

Surgery for Kidney Stones

Non-obstructive stones rarely cause pain. So surgery is not necessary when kidney stones are not causing any obstruction. And even if they cause pain, medications are usually sufficient. But surgery is required when there is bothersome flank pain and imaging evidence of one or more obstructive stones.

Common surgical treatments include:

  1. Shockwave lithotripsy: A simple outpatient procedure in which sound waves are directed on kidney stones, breaking them into smaller pieces capable of passing on their own in urine.
  2. Ureteroscopy: An outpatient procedure for small-to-medium stones in which a small tube (ureteroscope) is inserted into the urinary tract and used to pull out stones or to direct laser to the stones to break them into smaller pieces.
  3. Percutaneous nephrolithotripsy: A procedure in which the urologist makes a small incision in the back and directly into the kidney, using the incision to access and remove stones. It is the most effective method for very large kidney stones.

Preventing Kidney Stones

Lifestyle changes can help you to avoid having kidney stones. For instance, drinking at least two-and-a-half liters of water every day will help you to achieve a daily urine production of two liters, which prevents stones. Fluids such as coffee and citrus juices also are very effective in preventing kidney stones. Citrus (especially from lemon and grapefruit) makes urine more alkaline and reduces the risk of almost all kinds of stones. But you must avoid sugary juices, as the sweetener in them may increase your risk of having stones and undo the good effects of the juice.

If you have had a bout of kidney stones before, you have a greater risk of getting stones. So depending on the chemical constituents of your first kidney stones, you may have to limit intake of certain foods, such as sugar, salt, proteins and dairy products. For calcium oxalate stones, you will have to cut down the amount of meat, eggs, shellfish, peanuts, spinach, chocolate, sweet potatoes, rhubarb and beetroot from your diet. For uric acid stones, taking allopurinol (a gout medication) will help prevent future episodes. Potassium citrate pills and thiazide family of diuretics (indapamide, chlorthalidone and hydrochlorothiazide) are also effective in preventing all calcium-based stones.

Looking for advice or help with kidney stones? At St Pete Urology, we offer timely and accurate advice, diagnosis and treatment of kidney stones. Our multidisciplinary, compassionate, patient-centered approach will ensure you get the best possible care. Don’t suffer the pain of kidney stones for a day more while we can help you get quick relief. For more information, visit the “St Pete Urology” site.

What foods to avoid with kidney stones?

When substances found in urine become so concentrated, they can combine to form solid masses called kidney stones. For instance, calcium in urine can combine with phosphorous or oxalate to form calcium phosphate and calcium oxalate crystals respectively. Likewise, the buildup of uric acid in urine following protein metabolism can lead to uric acid crystals. Since the urinary tract is not functionally adapted to expel solid matter, the stones become very painful to pass. Fortunately, the risk of formation of kidney stones can be reduced through dietary measures.

So what should you eat and drink to avoid getting these painful stones?

1. Drink copious amounts of water
Taking large quantities of fluid, particularly water, can significantly reduce the risk of kidney stones. Water dilutes urine and lowers its concentration, minimizing the possibility of the chemicals combining to form stones. Just make sure to drink 12 glasses or more of water every day.

2. Eat more calcium-rich foods
Calcium combines with oxalate and eliminates it. Therefore, low calcium intake allows your oxalate levels to rise while increased intake reduces the quantity of oxalate in urine. It is advisable that you get calcium from food and not from supplements (as supplements increase the risk of kidney stones). Recommended sources of calcium include cottage cheese, other types of cheeses, yogurt, milk (cow’s milk, goat’s milk, fortified soy milk and lactose-free milk), legumes, dark green vegetables, calcium-set tofu, seeds, blackstrap molasses and nuts. Intake of foods rich in vitamin D every day can ensure that the body absorbs more calcium. There are several foods fortified with vitamin D, but you also can get this vitamin from egg yolks, cheese and salmon.

3. Increase your citrus intake
Citrus provides naturally occurring citrate which is effective in stopping or reducing the formation of kidney stones. You can get citrate from citrus fruit, citrus juice, oranges, grapefruit and lemons.

Which types of food should you avoid?

1. Limit your salt intake
Increased sodium levels promote the buildup of calcium in urine. Hence, it is important to avoid adding too much salt to your food and to check all labels on processed foods to control the amount of sodium you take. Whenever possible, instruct that no salt be added in the foods you order in hotels or restaurants. Vegetable juices may contain high quantities of sodium, so check what you drink.

2. Reduce intake of animal protein
Most animal sources of protein increase the level of uric acid and reduce the level of citrate in urine. Citrate is important in preventing stone formation. Therefore, you should avoid eating large quantities of red meat, poultry, chicken, pork, eggs and fish which contain large quantities of citrate. Instead of animal proteins, you should turn to alternatives such as Greek yogurt, quinoa, hummus, tofu (bean curd) and chia seeds. Make sure to discuss what types of protein you should eat with your doctor.

3. Minimize the quantity of oxalate-rich foods
Oxalate-rich foods can increase the development of kidney stones. So if you are at greater risk or already have had stones before, then you should either eliminate or reduce the quantity of oxalates. But if you have to eat oxalate-rich foods, always follow or combine them with a calcium source to ensure the oxalate is bound to calcium during digestion and prevented from reaching the kidneys. Foods with high quantities of oxalate include beets, chocolate, nuts, tea, spinach, swiss chard, sweet potatoes and rhubarb. Speak with your doctor to determine the limits of oxalate-rich foods you should have in your diet.

4. Cut down sugar intake
High levels of added fructose and sucrose can increase the risk of stones. You should reduce or eliminate the amount of added sugar you take, particularly in processed foods, cakes, fruits, soft drinks, juices, agave nectar, honey, cane sugar, crystallized fructose, corn syrup and brown rice syrup.

5. Avoid cola drinks
Cola contains high quantities of phosphate, a chemical that promotes kidney stone formation. Avoiding colas will therefore reduce your risk of kidney stones.

Dietary tips for avoiding kidney stones

Once you have kidney stones for the first time, the risk of a recurrence increases drastically unless you take the necessary steps to prevent them. For instance, you can take medications prescribed by your doctor to prevent the stones. Likewise, you can begin to watch keenly what you drink and eat. It is also important that tests are run on the stones you currently have to determine what type they are in order to clearly define appropriate steps for preventing a recurrence. Strategies for preventing recurrence of kidney stones include:

  1. Drinking at least 12 glasses of water every day.
  2. Drinking citrus juices, like orange juice.
  3. Reducing the amount of animal protein you take.
  4. Reducing the amount of added sugar, salt and products rich in fructose corn syrup.
  5. Avoiding drinks and foods high in phosphates and oxalates.
  6. Eating a calcium-containing food at every meal, at least 3 times a day.
  7. Avoiding foods or drinks that dehydrate the body, such as alcohol.

Kidney stones can cause a lot of pain and discomfort. But with slight dietary changes, occurrence of the stones can be effectively prevented or managed. Keeping your body hydrated, pairing oxalate-rich foods with calcium and avoiding foods high in sugar and salt are crucial dietary steps for preventing kidney stones.

At St Pete Urology, we apply a range of treatments, such as lifestyle, dietary, medical and surgical interventions to ensure the best outcome possible for our patients. At our center, most patients with kidney stones are seen by specialists, taken through 24-hour urine studies and blood tests, and given the right treatment depending on the type and cause of their stones. Our urologists are experts in shock-wave lithotripsy (SWL), ureteroscopy and percutaneous nephrolithotomy, among other treatments for relieving pain and restoring a normal, pain-free life. We also develop preventive plans for our patients, giving them a clearer picture of why the stones develop and the necessary changes they should make to prevent them, including dietary, lifestyle and medications to take. For more information on the diagnosis, treatment, prevention and follow-up care for kidney stones, visit the “St Pete Urology” site.

What do you do for a kidney stone?

Kidney stones can be treated in a number of ways, depending on the cause, size and location of the stones. The treatment and management of kidney stones also depend on your overall comfort level, any complications related to the stones and on your other medical problems. Most kidney stones are small (4mm or less in diameter) and can be passed in urine with the help of medications. The medications are used to keep you comfortable as the stones pass naturally through your urinary tract, with the passage of a stone taking a few days to a few weeks. Larger kidney stones are associated with severe symptoms and may not pass without a medical expulsive procedure.

What should you do with small kidney stones?

Most small kidney stones (4mm or less in diameter) can pass through the urinary tract and out of the body without invasive treatment. To pass such a small stone, you should:

  1. Drink plenty of water: Drinking 2-3 liters of water every day will help to flush out a kidney stone. Unless your doctor says otherwise, make sure to increase your daily fluid intake (mostly water) to increase the rate of passage of any stones you may have.
  2. Use pain relievers: As a kidney stone passes through your urinary tract, it will cause some discomfort. For mild pain, your doctor may recommend over-the-counter medications such as ibuprofen, acetaminophen or naproxen sodium. For severe pain, Ketorolac or narcotics may be recommended.
  3. Medications to increase passage rate: To reduce the time required to pass a kidney stone naturally, your urologist may prescribe medications called alpha blockers (such as tamsulosin) or calcium channel blockers (such as nifedipine) to relax ureter muscles and help you to pass the kidney stone quickly and with minimal pain.

What should you do with larger kidney stones?

Larger kidney stones cannot be treated effectively with conservative measures. Likewise, a kidney stone that is lodged in an area of the urinary tract or that has moved into the ureter and is causing severe pain, bleeding or urinary tract infections may require more extensive treatment. When diagnosed with such a kidney stone, the doctor will recommend that you be admitted to hospital for treatment.

Extensive medical treatment is generally necessary if:

  1. You have a higher risk of kidney failure, especially if you have only one kidney.
  2. Your symptoms are not improving within an hour after taking painkillers or anti-nausea medication.
  3. You are pregnant.
  4. You are dehydrated and vomiting too much fluid.
  5. You are over 60 years of age.

Larger kidney stones (6mm in diameter or more) usually require treatment to remove them. The methods used to remove such stones include extracorporeal shock wave lithotripsy (ESWL), ureteroscopy, percutaneous nephrolithotomy and open surgery. The type of treatment given will depend on the size and location of the stone.

Types of Treatment

1. Extracorporeal shock wave lithotripsy (ESWL)

This is the most commonly used method of removing kidney stones that cannot be passed in urine. The procedure involves application of ultrasound (high frequency sound waves) to identify the location of a stone with more precision. Ultrasound shock waves are then directed at the stone from a machine, breaking down the stone into smaller pieces that can easily pass in urine. ESWL is an uncomfortable procedure and is therefore performed under painkilling medication. More than one session may be necessary for the procedure to successfully treat kidney stones, but ESWL is known to have up to 99 percent efficacy for stones of 20mm or less in diameter.

2. Ureteroscopy

For kidney stones that are stuck in the ureter, the urologist may have to use a ureteroscope (a long, thin telescope) to reach and remove the stones. The thin lighted tube is fitted with a camera to help pinpoint the location of a stone with utmost precision. During the procedure, the ureteroscope is passed through the urethra and bladder into the ureter and to the place where the stone is stuck.
Once the stone is reached, it can be snared or broken down into smaller pieces using laser energy so that the pieces can then pass naturally in urine. Or the doctor may use another instrument to remove the stone without breaking it. Since ureteroscopy is performed under general anesthesia, you will not be able to drive or operate machinery for up to 48 hours after the procedure. Ureteroscopy is highly effective for stones 15mm or less in diameter, but a plastic tube known as stent may be inserted temporarily into your bladder to help drain stone fragments.

3. Percutaneous nephrolithotomy (PCNL)

PCNL is an alternative procedure that is effective for larger kidney stones. It can be used when ESWL is not suitable, such as when the person being treated is obese. Percutaneous nephrolithotomy involves using a thin telescopic device called a nephroscope. The doctor performs the procedure by making a small incision at the back and then passes the nephroscope through the hole into the kidney. Using the nephroscope, the stone is either pulled out or broken down into smaller pieces using pneumatic or laser energy. The procedure is performed under general anesthesia and is 86 percent effective for kidney stones that are 21-30mm in diameter.

4. Open surgery

Nowadays, the use of open surgery for kidney stones is very rare and only performed in less than 1 percent of cases. In fact, open surgery is only recommended when a kidney stone is extremely large or when there is abnormal anatomy in the affected section of the urinary tract. For instance, open surgery may be necessary if the kidney stones (such as calcium phosphate stones) are caused by an overactive parathyroid gland (hyperthyroidism). Removing a tumor that is causing the parathyroid glands to produce excess parathyroid hormone and hence increased calcium levels in the body also may be necessary to treat some kidney stones. During open surgery, the urologist makes an incision in your back and uses the incision to reach the ureter, bladder and kidney. The stone is then removed from its location.

Preventing future kidney stones

After your kidney stones are treated, the doctor will assess your risk of kidney stones and recommend preventive measures. Generally, the formation of kidney stones is prevented using a combination of lifestyle changes and medications.

1. Lifestyle changes

Lifestyle changes that reduce the risk of kidney stones include:
(a) Drinking plenty of water throughout the day: If you have a history of kidney stones, drinking plenty of water (2-3 liters per day) will significantly reduce your risk of having stones in future. You may have to drink even more water if you live in a hot and dry climate. To know that you are drinking enough water, check if your urine is light and clear.
(b) Reduce the quantity of oxalate-rich foods: If you have previously suffered from calcium oxalate stones, then you can reduce your risk of stones in future by scaling down your consumption of foods rich in oxalates. You may have to cut down on your intake of spinach, sweet potatoes, tea, nuts, okra, beets, rhubarb, Swiss chard, soy products and black pepper.
(c) Reduce amount of salt and animal protein in your diet: To avoid kidney stones in future, reduce your salt intake and minimize animal protein in our diet. It is advisable that you use a salt substitute (such as Mrs. Dash) and take non-animal proteins (such as legumes).
(d) Use calcium supplements with caution: Calcium-rich foods will not increase your risk of kidney stones so you can continue eating them unless your doctor says otherwise. However, calcium supplements can increase the risk of kidney stones and should be taken with caution and only after speaking with a doctor or a dietitian.

2. Medications

Certain medications are effective in controlling the quantity of salts and minerals in urine and hence helpful in preventing the formation of stones. However, the type and effectiveness of such medications depend on the type of stone you are have. For calcium stones, thiazide diuretics and phosphate-containing preparations are effective. Allopunirol and alkalizing agents are effective for uric acid stones, small doses of antibiotics can eliminate bacteria and prevent struvite stones, while cystine-reducing medications can prevent cystine stones.
At St Pete Urology, we have established an integrated and multidisciplinary diagnosis, treatment and management program for kidney stones. By bringing together a diverse team of professionals including urologists, nephrologists, clinical nurse specialists, radiologists, nutritionists and other healthcare specialists, we ensure that our patients receive the most compassionate, comprehensive and effective treatment. We offer both surgical and non-surgical treatments with very high success rates. For more help and information on the treatment of kidney stones, visit St Pete Urology’s website.