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  • Title: [Acute kidney injury and drug-induced nephropathies].
    Author: Nortier J, Hougardy JM, Pozdzik A, Gastaldello K, Le Moine A.
    Journal: Rev Med Brux; 2011 Sep; 32(4):305-11. PubMed ID: 22034761.
    Abstract:
    All types of acute kidney injury (AKI) (functional /pre-renal, parenchymal/intra-renal, obstructive/post-renal) result in a sharp drop of the glomerular filtration rate, with variable reversibility according to the initial cause. In one case out of five, drug intake can be related to the onset of AKI. Antibiotics, analgesics and nonsteroidal anti-inflammatory drugs, angiotensin converting enzyme inhibitors and angiotensin II receptor antagonists are the agents mostly involved, as well as iodinated radio-contrast agents. Mechanisms are often complex: toxic cellular effect directed on a nephron segment (tubular necrosis) associated or not with intraglomerular hemodynamic changes, or immune process leading to acute tubule-interstitial nephritis. Each underlying risk factor (age > 60 year, cardiac or hepatic failure, hypertension, diabetes, intra-vascular volume depletion, preexisting or unknown chronic kidney disease) must be taken into consideration by the prescribing physician because it reduces the chance of functional recovery and worsens the renal and the overall prognosis. A pre-renal additional component is often present and avoidable thanks to a strict hemodynamic monitoring. The present article summarizes some recent physiopathological aspects of AKI and makes the link between clinical situations and currently prescribed drugs. Lessons from the radio-contrast induced nephropathy are examined by taking into account prevention aspects and risk factors screening. An effective collaboration between the general practitioner and the nephrologist would benefit in optimizing the treatment of difficult cases.
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