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    Injury - kidney and ureter

    Kidney damage; Toxic injury of the kidney; Kidney injury; Traumatic injury of the kidney; Fractured kidney; Inflammatory injury of the kidney; Bruised kidney; Ureteral injury

    Injury to the kidney and ureter is damage to the organs of the upper urinary tract.

    Causes

    The kidneys are located in the flank (back of the upper abdomen at either side of the spinal column). They are deep in the abdomen and are protected by the spine, lower rib cage, and strong muscles of the back. This location protects the kidneys from many outside forces.

    The kidneys are well-padded for a reason -- they have a large blood supply. Injury can lead to severe bleeding.

    Kidneys may be injured by damage to the blood vessels that supply or drain them, including:

    • Aneurysm
    • Arterial blockage
    • Arteriovenous fistula
    • Renal vein thrombosis (clotting)
    • Trauma

    Kidney injuries may also be caused by:

    • Angiomyolipoma, a noncancerous tumor
    • Autoimmune disorders
    • Bladder outlet obstruction
    • Cancer of the kidney, pelvic organs (ovaries or uterus in women), or colon
    • Diabetes
    • Excess buildup of body waste products such as uric acid (which can occur with gout or treatment of bone marrow, lymph node, or other disorders)
    • Exposure to toxic substances such as lead, cleaning products, solvents, fuels, or long-term use of high-dose pain medications (analgesic nephropathy)
    • High blood pressure and other medical conditions that affect the kidneys
    • Inflammation caused by immune responses to medications, infection, or other disorders
    • Medical procedures such as kidney biopsy, or nephrostomy tube placement
    • Ureteropelvic junction obstruction
    • Ureteral obstruction

    The ureters are the tubes that carry urine from the kidneys to the bladder. Uretral injuries may be caused by:

    • Complications from medical procedures
    • Diseases such as retroperitoneal fibrosis, retroperitoneal sarcomas, or cancers that spread to the lymph nodes near the ureters
    • Kidney stone disease
    • Radiationto the belly area
    • Trauma

    Symptoms

    Acute or emergency symptoms may include:

    • Abdominal pain
    • Abdominal swelling
    • Back pain
    • Blood in the urine
    • Decreased alertness, including coma
    • Decreased urine output
    • Drowsiness
    • Fever
    • Flank pain, severe
    • Increased heart rate
    • Inability to urinate
    • Nausea, vomiting
    • Pale skin
    • Skin cool to touch
    • Sweating

    Long-term (chronic) symptoms may include:

    • Constipation (can occur with toxic injury or lead poisoning)
    • Irritability
    • Weight loss

    If only one kidney is affected and the other kidney is healthy, you may not have any symptoms.

    Exams and Tests

    The doctor or nurse will examine you and ask questions about your medical history and symptoms. You will be asked about any recent illness and if you have come into contact with toxic substances.

    The exam may show:

    • Excess bleeding (hemorrhage)
    • Extreme tenderness over the kidney
    • Shock, including rapid heart rate or falling blood pressure
    • Signs of kidney failure

    Tests that may be done include:

    • Abdominal CT scan
    • Abdominal MRI
    • Abdominal ultrasound
    • Angiography of the kidney artery or vein
    • Blood electrolytes
    • Blood tests to look for toxic substances
    • Complete blood count (CBC)
    • Intravenous pyelogram (IVP)
    • Kidney function tests
    • Retrograde pyelogram
    • Kidney x-ray
    • Renal scan
    • Urinalysis

    Treatment

    The goals are to treat emergency symptoms and prevent or treat complications. You may need to stay in a hospital.

    Treatments for akidney injury may include:

    • Bed rest for 1 - 2 weeks or until bleeding is reduced
    • Close observation and treatment for symptoms of kidney failure
    • Dietary restrictions
    • Medications to treat damage caused by toxic substances or illnesses (for example, chelation therapy for lead poisoning or allopurinol to lower uric acid in the blood due to gout)
    • Pain medicines
    • Stopping medications or exposure to substances that may have injured the kidney
    • Medications such as corticosteroids or immunosuppressants if the injury was caused by inflammation
    • Treatment of acute kidney failure

    Sometimes, surgery is needed. Thismay include:

    • Repairing a "fractured" or torn kidney, torn blood vessels, torn ureter, or similar injury
    • Removing the entire kidney (nephrectomy), draining the space around the kidney, or stopping the bleeding (angioembolization)
    • Placing astent

    Outlook (Prognosis)

    How well you do depends on the the cause and severity of the injury.

    Sometimes, the kidney starts working properly again. Sometimes, kidney failure occurs.

    Possible Complications

    • Acute kidney failure, one or both kidneys
    • Bleeding (may be minor or severe)
    • Bruising of the kidney
    • Chronic kidney failure, one or both kidneys
    • Infection (peritonitis, sepsis)
    • Pain
    • Renal artery stenosis
    • Renal hypertension
    • Shock
    • Urinary tract infection

    When to Contact a Medical Professional

    Call your health care provider if you have symptoms of an injury to the kidney or ureter, especially if you have a history of:

    • Exposure to toxic substances
    • Illness
    • Infection
    • Physical injury

    Go to the emergency room or call the local emergency number (such as 911) if you have decreased urine output after a kidney injury. This may be a symptom of kidney failure.

    Prevention

    You can help prevent injury to the kidneys and ureter by following these precautions:

    • Be aware of possible sources of lead poisoning, such as old paints, vapors from working with lead-coated metals, and alcohol distilled in recycled car radiators.
    • Follow your health care provider's directions for using all medications, including over-the-counter medications.
    • Follow your health care provider's instructions for treating gout and other illnesses.
    • Use appropriate safety equipment during work and play.
    • Use cleaning products, solvents, and fuels as directed in a well-ventilated area because the fumes may also be toxic.
    • Wear seat belts and drive safely.

    References

    Molitoris BA. Acute kidney injury. In: Goldman L, Schafer AI, eds. Cecil Medicine. 24th ed. Philadelphia, Pa: Saunders Elsevier;2011: chap 122.

    Santucci RA, Doumanian LR. Upper urinary tract injury. In: Wein AJ, ed. Campbell-Walsh Urology. 10th ed. Philadelphia, Pa: Saunders Elsevier; 2011:chap 42.

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          Tests for Injury - kidney and ureter

          Review Date: 9/24/2012

          Reviewed By: David C. Dugdale, III, MD, Professor of Medicine, Division of General Medicine, Department of Medicine, University of Washington School of Medicine. Louis S. Liou, MD, PhD, Chief of Urology, Cambridge Health Alliance, Visiting Assistant Professor of Surgery, Harvard Medical School. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M. Health Solutions, Ebix, Inc.

          The information provided herein should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. A licensed medical professional should be consulted for diagnosis and treatment of any and all medical conditions. Links to other sites are provided for information only -- they do not constitute endorsements of those other sites. © 1997- A.D.A.M., Inc. Any duplication or distribution of the information contained herein is strictly prohibited.
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          St. Luke's Hospital - 232 South Woods Mill Road - Chesterfield, MO 63017 Main Number: 314-434-1500 Emergency Dept: 314-205-6990 Patient Billing: 888-924-9200
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