Acute tubular necrosis

Necrosis - renal tubular; ATN; Necrosis - acute tubular

Acute tubular necrosis (ATN) is a kidney disorder involving damage to the tubule cells of the kidneys, which can lead to acute kidney failure. The tubules are tiny ducts in the kidneys that help filter the blood when it passes through the kidneys.

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  • Heart failure - Animation

    Heart failure

    Animation

  • Heart failure - Animation

    If you cough a lot, often feel weak, have lost your appetite, and need to urinate a lot at night, you might have symptoms of heart failure. Heart failure is a long-term condition that usually comes on slowly. However, it can develop suddenly, for instance, after a heart attack. You have heart failure when your heart does not pump blood out of your heart very well, or when your heart muscles are stiff and do not easily fill up with blood. When you have heart failure, your heart cannot pump enough oxygen-rich blood to the rest of your body, especially when you exercise or move around a lot. As the heart loses the ability to pump blood, blood backs up in other parts of your body, including your lungs, liver, gastrointestinal tract, and your arms and legs. The most common cause of heart failure is coronary artery disease, the narrowing of the blood vessels that supply blood and oxygen to your heart. So, how do you know if you have heart failure?Get to your doctor. You may have trouble breathing, an irregular heartbeat, swollen legs, neck veins that stick out, and sounds from fluid built up in your lungs. Your doctor will check for these and other signs of heart failure. A test called an echocardiogram is often the best test to diagnose your heart failure. Your doctor can also use this test to find out why you have heart failure, and then monitor your condition going forward every three to six months. Your doctor will talk to you about knowing your body and symptoms that mean your heart failure is getting worse. You will need to learn to watch for changes in your heart rate, pulse, blood pressure, and weight. You will also need to limit salt in your diet, stop drinking alcohol, quit smoking if you need to, exercise, lose weight if you need to, and get enough rest. Your doctor will probably ask you to take medicines to treat your heart failure. These medicines can treat your symptoms, prevent your heart failure from getting worse, and help you live longer. If you have heart failure, taking your medicines, changing your lifestyle, and treating the condition that caused heart failure can go a long way toward improving your health. But heart failure is a chronic, or long-term, illness, which means it may get worse over time. Make sure you call your doctor if you start coughing more, have sudden weight gain or swelling, or feel week. Have someone take you to the emergency room right away if you have trouble with fainting, a fast and irregular heartbeat, or feel severe crushing chest pain.

  • Tophi gout in hand

    Tophi gout in hand

    Chronic symptoms such as joint deformity and limitation of motion in affected joints may occur if several attacks of gout occur each year. Uric acid deposits called tophi develop in cartilage tissue, tendons, and soft tissues. These tophi usually develop only after a patient has suffered from the disease for many years. Deposits also can occur in the kidneys, leading to chronic renal failure.

    Tophi gout in hand

    illustration

  • White nail syndrome

    White nail syndrome

    White nail syndrome may also be called leukonychia. Leukonychia can occur with arsenic poisoning, heart disease, renal failure, pneumonia, or hypoalbuminemia.

    White nail syndrome

    illustration

  • Lower leg edema

    Lower leg edema

    Painless swelling of the feet and ankles is a common problem, particularly in older people. Most of the time swelling can be relieved by elevating the legs above the heart while lying down and avoiding sitting or standing without moving for prolonged periods of time. Although swelling of the feet and ankles can be a minor problem, it can also be an indication of more serious illnesses such as heart failure, renal failure, or liver failure.

    Lower leg edema

    illustration

  • Osmolality test

    Osmolality test

    An osmolality urine test is performed to measure the concentration of particles in urine. Greater than normal results may indicate conditions such as Addison disease, congestive heart failure or shock. Lower-than-normal measurements may indicate aldosteronism, diabetes insipidus, excess fluid intake, renal tubular necrosis or severe pyelonephritis.

    Osmolality test

    illustration

  • Renal arteries

    Renal arteries

    A renal angiogram is a test used to examine the blood vessels of the kidneys. The test is performed by threading a catheter through the main vessel of the pelvis, up to the renal artery that leads into the kidney. Contrast medium is then injected into the renal artery through the catheter, and images of the vessels of the kidney are taken. The test is a useful aid in diagnosing any narrowing of the arteries, blood clots, tumors, or aneurysms.

    Renal arteries

    illustration

  • Acute vs. chronic conditions

    Acute vs. chronic conditions

    Acute conditions are severe and sudden in onset. This could describe anything from a broken bone to an asthma attack. A chronic condition, by contrast is a long-developing syndrome, such as osteoporosis or asthma. Note that osteoporosis, a chronic condition, may cause a broken bone, an acute condition. An acute asthma attack occurs in the midst of the chronic disease of asthma. Acute conditions, such as a first asthma attack, may lead to a chronic syndrome if untreated.

    Acute vs. chronic conditions

    illustration

  • Causes of acute bronchitis

    Causes of acute bronchitis

    Bronchitis is an inflammation of the bronchial tubes, the part of the respiratory system that leads into the lungs. Acute bronchitis has a sudden onset and usually appears after a respiratory infection, such as a cold, and can be caused by either a virus or bacteria. The infection inflames the bronchial tubes, which causes symptoms such as fever, cough, sore throat, wheezing, and the production of thick yellow mucus. If acute bronchitis occurs because of a bacterial infection antibiotics are given for the treatment. Otherwise if the infection is viral medications can only be given to alleviate the symptoms. Although acute bronchitis is relatively common, some people are more prone to it than others.

    Causes of acute bronchitis

    illustration

  • Renal biopsy

    Renal biopsy

    In renal biopsy, a small sample of kidney tissue is removed with a needle. The test is sometimes used to evaluate a transplanted kidney. It is also used to evaluate an unexplained decrease in kidney function, persistent blood in the urine, or protein in the urine.

    Renal biopsy

    illustration

  • Renal veins

    Renal veins

    A renal venogram is a method used to examine the veins of the kidneys, using a contrast material and x-rays.

    Renal veins

    illustration

  • Osmolality urine - series

    Osmolality urine - series

    Presentation

  • Complete blood count - series

    Complete blood count - series

    Presentation

  • White blood cell count  - series

    White blood cell count - series

    Presentation

  • Kidney transplant  - series

    Kidney transplant - series

    Presentation

  • Kidney transplant  - series

    Kidney transplant - series

    Presentation

  • Complete blood count - series

    Complete blood count - series

    Presentation

  • Heart failure - Animation

    Heart failure

    Animation

  • Heart failure - Animation

    If you cough a lot, often feel weak, have lost your appetite, and need to urinate a lot at night, you might have symptoms of heart failure. Heart failure is a long-term condition that usually comes on slowly. However, it can develop suddenly, for instance, after a heart attack. You have heart failure when your heart does not pump blood out of your heart very well, or when your heart muscles are stiff and do not easily fill up with blood. When you have heart failure, your heart cannot pump enough oxygen-rich blood to the rest of your body, especially when you exercise or move around a lot. As the heart loses the ability to pump blood, blood backs up in other parts of your body, including your lungs, liver, gastrointestinal tract, and your arms and legs. The most common cause of heart failure is coronary artery disease, the narrowing of the blood vessels that supply blood and oxygen to your heart. So, how do you know if you have heart failure?Get to your doctor. You may have trouble breathing, an irregular heartbeat, swollen legs, neck veins that stick out, and sounds from fluid built up in your lungs. Your doctor will check for these and other signs of heart failure. A test called an echocardiogram is often the best test to diagnose your heart failure. Your doctor can also use this test to find out why you have heart failure, and then monitor your condition going forward every three to six months. Your doctor will talk to you about knowing your body and symptoms that mean your heart failure is getting worse. You will need to learn to watch for changes in your heart rate, pulse, blood pressure, and weight. You will also need to limit salt in your diet, stop drinking alcohol, quit smoking if you need to, exercise, lose weight if you need to, and get enough rest. Your doctor will probably ask you to take medicines to treat your heart failure. These medicines can treat your symptoms, prevent your heart failure from getting worse, and help you live longer. If you have heart failure, taking your medicines, changing your lifestyle, and treating the condition that caused heart failure can go a long way toward improving your health. But heart failure is a chronic, or long-term, illness, which means it may get worse over time. Make sure you call your doctor if you start coughing more, have sudden weight gain or swelling, or feel week. Have someone take you to the emergency room right away if you have trouble with fainting, a fast and irregular heartbeat, or feel severe crushing chest pain.

  • Tophi gout in hand

    Tophi gout in hand

    Chronic symptoms such as joint deformity and limitation of motion in affected joints may occur if several attacks of gout occur each year. Uric acid deposits called tophi develop in cartilage tissue, tendons, and soft tissues. These tophi usually develop only after a patient has suffered from the disease for many years. Deposits also can occur in the kidneys, leading to chronic renal failure.

    Tophi gout in hand

    illustration

  • White nail syndrome

    White nail syndrome

    White nail syndrome may also be called leukonychia. Leukonychia can occur with arsenic poisoning, heart disease, renal failure, pneumonia, or hypoalbuminemia.

    White nail syndrome

    illustration

  • Lower leg edema

    Lower leg edema

    Painless swelling of the feet and ankles is a common problem, particularly in older people. Most of the time swelling can be relieved by elevating the legs above the heart while lying down and avoiding sitting or standing without moving for prolonged periods of time. Although swelling of the feet and ankles can be a minor problem, it can also be an indication of more serious illnesses such as heart failure, renal failure, or liver failure.

    Lower leg edema

    illustration

  • Osmolality test

    Osmolality test

    An osmolality urine test is performed to measure the concentration of particles in urine. Greater than normal results may indicate conditions such as Addison disease, congestive heart failure or shock. Lower-than-normal measurements may indicate aldosteronism, diabetes insipidus, excess fluid intake, renal tubular necrosis or severe pyelonephritis.

    Osmolality test

    illustration

  • Renal arteries

    Renal arteries

    A renal angiogram is a test used to examine the blood vessels of the kidneys. The test is performed by threading a catheter through the main vessel of the pelvis, up to the renal artery that leads into the kidney. Contrast medium is then injected into the renal artery through the catheter, and images of the vessels of the kidney are taken. The test is a useful aid in diagnosing any narrowing of the arteries, blood clots, tumors, or aneurysms.

    Renal arteries

    illustration

  • Acute vs. chronic conditions

    Acute vs. chronic conditions

    Acute conditions are severe and sudden in onset. This could describe anything from a broken bone to an asthma attack. A chronic condition, by contrast is a long-developing syndrome, such as osteoporosis or asthma. Note that osteoporosis, a chronic condition, may cause a broken bone, an acute condition. An acute asthma attack occurs in the midst of the chronic disease of asthma. Acute conditions, such as a first asthma attack, may lead to a chronic syndrome if untreated.

    Acute vs. chronic conditions

    illustration

  • Causes of acute bronchitis

    Causes of acute bronchitis

    Bronchitis is an inflammation of the bronchial tubes, the part of the respiratory system that leads into the lungs. Acute bronchitis has a sudden onset and usually appears after a respiratory infection, such as a cold, and can be caused by either a virus or bacteria. The infection inflames the bronchial tubes, which causes symptoms such as fever, cough, sore throat, wheezing, and the production of thick yellow mucus. If acute bronchitis occurs because of a bacterial infection antibiotics are given for the treatment. Otherwise if the infection is viral medications can only be given to alleviate the symptoms. Although acute bronchitis is relatively common, some people are more prone to it than others.

    Causes of acute bronchitis

    illustration

  • Renal biopsy

    Renal biopsy

    In renal biopsy, a small sample of kidney tissue is removed with a needle. The test is sometimes used to evaluate a transplanted kidney. It is also used to evaluate an unexplained decrease in kidney function, persistent blood in the urine, or protein in the urine.

    Renal biopsy

    illustration

  • Renal veins

    Renal veins

    A renal venogram is a method used to examine the veins of the kidneys, using a contrast material and x-rays.

    Renal veins

    illustration

  • Osmolality urine - series

    Osmolality urine - series

    Presentation

  • Complete blood count - series

    Complete blood count - series

    Presentation

  • White blood cell count  - series

    White blood cell count - series

    Presentation

  • Kidney transplant  - series

    Kidney transplant - series

    Presentation

  • Kidney transplant  - series

    Kidney transplant - series

    Presentation

  • Complete blood count - series

    Complete blood count - series

    Presentation


 

Review Date: 8/28/2023

Reviewed By: Walead Latif, MD, Nephrologist and Clinical Associate Professor, Rutgers Medical School, Newark, NJ. Review provided by VeriMed Healthcare Network. Also reviewed by David C. Dugdale, MD, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.

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