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2.1
Renal Infarction
Kidney Infarction

Renal infarction is a serious condition due to renal artery occlusion that needs rapid diagnosis, as it may lead to irreversible kidney damage. The diagnosis may be difficult to make, as patients present with nonspecific symptoms.

Presentation

Renal infarction usually occurs in patients with cardiovascular risk factors, such as arterial hypertension, atrial fibrillation, ischemic heart disease or valvulopathy, previous infarction or thromboembolism [1]. However, this condition can also be associated with malignancies, trauma, clotting disorders, kidney transplantation, fibromuscular dysplasia, Marfan and Ehlers-Danlos syndromes [2] or cocaine use [3].

Symptoms start abruptly and consist of abdominal, flank, costovertebral or lower back pain, nausea, vomiting, fever and sometimes oliguria [4] and hematuria [5]. Blood pressure may be high during the acute episode [6]. Small renal infarction may only cause fatigue [7].

On examination, the affected kidney may be palpable or tender. Symptoms due to shock such as hypotension, tachycardia and prolonged capillary refill time may be present.

If the disease occurs in pregnant women, symptoms include vaginal bleeding, lower abdominal pain and uterus contractions.

Entire Body System

  • Fever

    Patients with fever, flank pain, and dysuria frequently are encountered in the emergency department. [ncbi.nlm.nih.gov]

    […] an aseptic fever caused by liberation of pyrogens from damaged tissue. intestinal infarction a common occurrence in horses due to occlusion of arteries by larvae of Strongylus vulgaris. [medical-dictionary.thefreedictionary.com]

Gastrointestinal

  • Abdominal Pain

    Acute abdominal pain is one of the most frequent complaints evaluated at emergency departments. Approximately 25 % of abdominal pain patients discharged from emergency departments are diagnosed with undifferentiated abdominal pain. [ncbi.nlm.nih.gov]

  • Vomiting

    The most common symptoms were abdominal pain, flank pain, nausea, and vomiting. Leukocytosis (>10 × 10(9)/L) and elevated lactate dehydrogenase levels (>620 IU/L) were the most prominent laboratory findings. [ncbi.nlm.nih.gov]

    Snapshot A 68-year-old man presents to the emergency room with a 2-day history of abdominal pain, nausea, and vomiting. He denies any urinary frequency or urgency and denies any recent changes in his diet. [medbullets.com]

    Nausea and Vomiting Frequent nausea and occasional vomiting Vomiting is associated with predominant pain in lower back and seldom in abdomen. [epainassist.com]

    His pain decreased somewhat and he had no further vomiting. He was subsequently transferred back to his local hospital. Figure 1. [jrheum.org]

  • Nausea

    The most common symptoms were abdominal pain, flank pain, nausea, and vomiting. Leukocytosis (>10 × 10(9)/L) and elevated lactate dehydrogenase levels (>620 IU/L) were the most prominent laboratory findings. [ncbi.nlm.nih.gov]

    Snapshot A 68-year-old man presents to the emergency room with a 2-day history of abdominal pain, nausea, and vomiting. He denies any urinary frequency or urgency and denies any recent changes in his diet. [medbullets.com]

    Symptoms start abruptly and consist of abdominal, flank, costovertebral or lower back pain, nausea, vomiting, fever and sometimes oliguria and hematuria. Blood pressure may be high during the acute episode. [symptoma.com]

  • Right Flank Pain

    Here we present a case of a 41 year-old male who was admitted for acute onset right flank pain with fevers and rigors. A CT abdomen with contrast showed findings concerning for right pyelonephritis or renal infarction. [ncbi.nlm.nih.gov]

  • Left Flank Pain

    We present an original case of a 41-year-old man, complaining of acute severe left flank pain, resistant to common analgesic therapy, who was diagnosed of segmental renal infarction of a branch of left renal artery. [ncbi.nlm.nih.gov]

Cardiovascular

  • Hypertension

    Hypertension was diagnosed during the study of hematuria in the first case and due to a hypertensive emergency in the second case. [ncbi.nlm.nih.gov]

    Hypertension 2016; 68:832–839. Copyright © 2018 Wolters Kluwer Health, Inc. All rights reserved. [journals.lww.com]

  • Diastolic Hypertension

    He had a diastolic hypertension at admission and his previous medical history showed atrial fibrillation. Initial clinical diagnosis was aortic dissection. [ncbi.nlm.nih.gov]

Musculoskeletal

  • Back Pain

    He had complained of back pain 7 days after the ICD shock. Renal infarction was suspected, although computed tomography and magnetic resonance imaging could not be performed because of chronic renal failure and the presence of his ICD. [ncbi.nlm.nih.gov]

    Symptoms start abruptly and consist of abdominal, flank, costovertebral or lower back pain, nausea, vomiting, fever and sometimes oliguria and hematuria. Blood pressure may be high during the acute episode. [symptoma.com]

    Acute renal infarction as a cause of low-back pain. South Med J. 2003;96(5):497-9. 2. Dursun B, Yagci B, Batmazoglu M, Demiray G. Bilateral renal infarctions complicating fibromuscular dysplasia of renal arteries in a young male. [bjuinternational.com]

    Two nights prior to admission to our hospital, the patient experienced pain in the left flank, and the day before coming in, he had left lower back pain. [jxym.amegroups.com]

    If patient is suffering from acute renal infarction posse’s low back pain, flank and many more problems, in this stage, clinical treatment is not sufficient but it includes many treatments. [renaltreatment.com]

  • Low Back Pain

    Acute renal infarction as a cause of low-back pain. South Med J. 2003;96(5):497-9. 2. Dursun B, Yagci B, Batmazoglu M, Demiray G. Bilateral renal infarctions complicating fibromuscular dysplasia of renal arteries in a young male. [bjuinternational.com]

    If patient is suffering from acute renal infarction posse’s low back pain, flank and many more problems, in this stage, clinical treatment is not sufficient but it includes many treatments. [renaltreatment.com]

Urogenital

  • Flank Pain

    Acute renal infarction is a well known, although relatively unfrequent, cause of flank pain resistant to administration of spasmolytic and nonsteroidal anti-inflammatory drugs. [ncbi.nlm.nih.gov]

  • Hematuria

    Symptoms start abruptly and consist of abdominal, flank, costovertebral or lower back pain, nausea, vomiting, fever and sometimes oliguria and hematuria. Blood pressure may be high during the acute episode. [symptoma.com]

    Indeed, there was almost a significant difference in the patients with hematuria who had normal renal function (10 of 21) compared to the patients without hematuria who had normal renal function (5 of 18, p = 0.059), indicating that the absence of hematuria [journals.lww.com]

    Enhanced abdominal computed axial tomography scan showed renal infarction, and urinalysis showed no hematuria. Selective renal angiography was essential to evaluate the extent of dissection and suitability for repair. [ncbi.nlm.nih.gov]

    […] cell carcinoma", keywords = "Carcinoma, transitional cell, Hematuria, Infarction etiology, Kidney/blood supply, Urologic neoplasms", author = "Castle, {Erik P} and T. [mayoclinic.pure.elsevier.com]

    Evaluation Labs Urinalysis is recommended, with hematuria being a very common finding, seen in all cases in one study. [3] However, hematuria is not universal, with about one-half of the patients in another study showing no hematuria, [22] and two cases [onlinejets.org]

  • Oliguria

    Symptoms start abruptly and consist of abdominal, flank, costovertebral or lower back pain, nausea, vomiting, fever and sometimes oliguria and hematuria. Blood pressure may be high during the acute episode. [symptoma.com]

    After operation, oliguria and renal dysfunction developed, and he was admitted to our hospital because of acute renal failure after trauma. [ncbi.nlm.nih.gov]

    Of the clinical symptoms, pain was present in 81 of 89 (91%) cases, vomiting in 40%, fever in 49%, and oliguria in 16%. [journals.lww.com]

  • Anuria

    Hemorrhagic renal infarction due to renal vein thrombosis Signs and Symptoms Flank pain or abdominal pain Hematuria Arterial hypertension Irregular heart rate Nausea, vomiting Oligouria, Anuria Diagnostic Work-Up Urine: Signs for kidney infarction are [urology-textbook.com]

    Renal artery embolism successfully revascularized by surgery after 5 days’ anuria. Is it never too late? Nephrol Dial Transplant 1996; 11:1843–1845. 13. Olin JW, Froehlich J, Gu X, Bacharach JM, Eagle K, Gray BH, et al. [journals.lww.com]

  • Renal Pain

    In early January 2015, he urgently presented at the hospital with left renal pain, caused by a renal infarction, diagnosed by computed tomography (CT) angiography. Left nephrectomy was performed with pathological confirmation. [ncbi.nlm.nih.gov]

Workup

Blood workup in suspected renal infarction patients should include a complete blood cell count that may show leukocytosis [8], elevated levels of lactate dehydrogenase, [9], creatinine, blood urea nitrogen, as well as, C-reactive protein and aminotransferases [2]. Fibrinogen level will be low and fibrin-degradation product levels will be high. Metabolic acidosis, hyperkalemia, and hypocalcemia may be encountered. Other causes of lactate dehydrogenase elevation, such as myocardial infarction, hemolysis or malignancy should be excluded. Urinary analysis will show macroscopic or microscopic hematuria [6] and proteinuria [2].

An electrocardiogram is useful in order to determine if atrial fibrillation, a risk factor for renal infarction, is present. Other imaging studies include spiral computer tomography, renal ultrasound, computer tomography or classical angiography and dimercaptosuccinic acid or diethylenetriamine penta-acetic acid radioisotope scan. Computer tomography is used to exclude nephrolithiasis [5] and other lesions. It shows a typical wedge-shaped parenchymal opacification defect, while angiograms are capable of highlighting the occluded vessel [10]. Seldom, the renal vein may also be occluded. If contrast agents are used, the physician should consider their toxicity on an already compromised kidney and even order hemodialysis, if needed.

The infarction usually involves both the cortical and medullary areas and extends into the renal capsule. Hematoma, if present, indicates kidney trauma or transection. If contrast enhanced computer tomography is performed eight to seventy-two hours after the infarction developed, the cortical rim sign appears: a thin rim of cortex is visualized, due to collateral perfusion. Ultrasound and contrast-enhanced ultrasound, although less precise, may show the absence of flow on color Doppler evaluation [11]. These methods are also capable of detecting preexisting infarctions, that appear as hyperechoic scar tissue. Scintigraphic imaging will show diminished or absent renal perfusion and function.

As a last resort, a kidney biopsy may be performed in order to establish the diagnosis and exclude malignancy, if the patient has no contraindications.

Treatment

Treatment is conservative, with parenteral and oral anticoagulation; invasive management is rare. [ncbi.nlm.nih.gov]

Treatment for Thrombosis and Emboli- Heparin Thrombolytic Treatment Anticoagulation with intravenous heparin followed by oral warfarin. [epainassist.com]

Some patients do well with conservative treatment, while others need emergent or urgent surgery 1 - 3). Treatment is chosen based on the patient's hemodynamic status, renal function, and the feasibility of treatment modality 2). [kjim.org]

Prognosis

It is associated with poor prognosis in a high percentage of cases. OBJECTIVES: To describe the main clinical, biochemical and radiologic features and to determine which factors are associated with poor prognosis (death or permanent renal injury). [ncbi.nlm.nih.gov]

It is associated with poor prognosis in a high percentage of cases. Objectives To describe the main clinical, biochemical and radiologic features and to determine which factors are associated with poor prognosis (death or permanent renal injury). [revistanefrologia.com]

Etiology

Work-up for common etiologies was negative and the renal infarction was presumed to be idiopathic. He was discharged home on Enoxaparin. [ncbi.nlm.nih.gov]

[…] cell carcinoma", keywords = "Carcinoma, transitional cell, Hematuria, Infarction etiology, Kidney/blood supply, Urologic neoplasms", author = "Castle, {Erik P} and T. [mayoclinic.pure.elsevier.com]

Epidemiology

Introduction Clinical definition complete occlusion of main renal artery or segmental branch Epidemiology incidence very rare 0.7-1.4% found on autopsies risk factors cardiovascular disease Etiology cardioemboli cardiomyopathy endocarditis artificial [medbullets.com]

Inserm researchers Marcel Goldberg, Archana Singh Manoux and Marie Zins, from Inserm unit 1018 “Research Centre for Epidemiology and Public Health” and Université Versailles Saint Quentin, have contributed to the most extensive analysis ever carried out [presse.inserm.fr]

Worldwide epidemiology of atrial fibrillation: A global burden of disease 2010 study. Circulation 2014; 129 (8): 837-47. [ Links ] 34. Svennberg E, Engdahl J, Al-Khalili F, Friberg L, Frykman V, Rosenqvist M. [scielo.cl]

The epidemiology of varicella in staff and students of a hospital in torpics Int J Epidemiol 1984;13:502-5. [Figure 1] [indianjnephrol.org]

Atrial fibrillation: current knowledge and future directions in epidemiology and genomics. [jxym.amegroups.com]

Pathophysiology

Pathophysiology of renal damage in cocaine users is multifactorial, and it has been postulated that the right kidney was more prone to ischaemia. Left kidney represents an extremely unusual site of cocaine-related renal infarction. [ncbi.nlm.nih.gov]

The pathophysiologic effects of cocaine-induced renal injury involve several mechanisms. First, cocaine affects vascular reactivity and renal hemodynamics. [bmcnephrol.biomedcentral.com]

[Renal infarction: Pathogenesis, pathophysiology, and therapy]. Nihon Rinsho. 2006;64(Suppl 2):473–476. Japanese. 3. Scolari F, Ravani P. Atheroembolic renal disease. Lancet. 2010; 375(9726):1650–1660. 4. Turina S, Mazzola G, Venturelli C, et al. [dovepress.com]

Prevention

High index of suspicion is required for early diagnosis, as timely intervention may prevent loss of kidney function. [ncbi.nlm.nih.gov]

Stress prevention could reduce this risk. [presse.inserm.fr]

References

  1. Argiris A. Splenic and renal infarctions complicating atrial fibrillation. Mt Sinai J Med. 1997;64:342-349.
  2. Domanovits H, Paulis M, Nikfardjam M, et al. Acute renal infarction: Clinical characteristics of 17 patients. Medicine. 1999;78:386-394.
  3. Kramer R, Turner R. Renal infarction associated with cocaine use and latent protein C deficiency. South Med J. 1993; 86:1436-1438.
  4. Paris B, Bobrie G, Rossignol P,et al. Blood pressure and renal outcomes in patients with kidney infarction and hypertension. J Hypertens. 2006;24(8):1649–1654.
  5. Chu P, Wei Y, Huang J, et al. Clinical characteristics of patients with segmental renal infarction. Nephrology. 2006;11(4):336–340.
  6. Krishnan P, Anandh U, Fernandes DK, et al. Renal failure in a patient with primary antiphospholipid syndrome. J Assoc Physicians India. 2002;50:964–966.
  7. Iga K, Izumi C, Nakano A, et al. Problems in the initial diagnosis of renal infarction. Intern Med. 1997; 36: 330-332.
  8. Korzetz Z, Plotkin E, Bernheim J,et al. The clinical spectrum of acute renal infarction. Isr Med Assoc J. 2002;4(10):781–784.
  9. Hazanov N, Somin M, Attali M, et al. Acute renal embolism. Forty four cases of renal infarction in patients with atrial fibrillation. Medicine. 2004;83(5):292–299.
  10. Kawashima A, Sandler C, Ernst R etal. CT evaluation of renovascular disease. Radiographics. 2000;20(5): 1321-1340.
  11. Malhi H, Grant EG, Duddalwar V. Contrast-Enhanced Ultrasound of the Liver and Kidney. Radiol. Clin. North Am. 2014;52(6):1177-1190.
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