Renal failure
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Comparative Study
Major barriers against renin-angiotensin-aldosterone system blocker use in chronic kidney disease stages 3-5 in clinical practice: a safety concern?
Renin-angiotensin-aldosterone system (RAAS) blockers are underutilized in patients with chronic kidney disease (CKD). We aimed to determine barriers against the use of RAAS blockers in these patients. Patients with stage 3-5 CKD referred to Hacettepe University Hospital Nephrology Unit during a 1 year period were evaluated for RAAS blocker use. ⋯ In 37.4% of patients, reasons for not starting RAAS blockers were unclear. This study showed that hyperkalemia is the major barrier against the use of RAAS blockers in patients with CKD. There was, however, a subset of patients who did not receive RAAS blockers even without clear contraindications.
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In this report, the clinical characteristics of a 65-year-old female patient with tricuspid regurgitation, ischemic cardiomyopathy, congestive heart failure, and chronic renal failure were retrospectively evaluated. Laboratory studies revealed cardiogenic ascites coincided with nephrogenic ascites and subclinical amiodarone-induced hypothyroidism. The ascites of the patient was responsive to management of congestive heart failure and therapeutic paracentesis during the first episode, add-on therapy with intensified hemodialysis during the second episode, and add-on therapy with low-dose eltroxin during the third episode. When nephrogenic ascites and cardiogenic ascites of maintenance hemodialysis patients become refractory, hypothyroidism should be examined in these patients.
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Case Reports
Spontaneous perirenal hemorrhage in end-stage renal disease treated with selective embolization.
Spontaneous nontraumatic rupture of the kidney (Wunderlich syndrome) is an extremely uncommon condition on hemodialysis. We report a case of 44-year-old hemodialysis patient presented with hemorrhagic shock and a right quadrant abdominal pain to the emergency department. ⋯ A kidney rupture was revealed by abdominal computed tomography, and active bleeding was successfully managed with arterial embolization. This case illustrates the safe and successful application of interventional radiology in the management of nontraumatic renal hemorrhage in the specific group of hemodialyzed patients even in the emergency setting.
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There have been many studies to estimate the incidence of acute kidney injury (AKI) in critically ill patients. However, results were variable due to the non-usage of uniform criteria and retrospective design of most studies. There are no new studies from the developing countries looking at AKI in these patients since adoption of uniform Acute Kidney Injury Network (AKIN) criteria. ⋯ Older patients, those with septic shock, and those requiring prolonged mechanical ventilation had increased risk for AKI. AKI was an independent predictor of mortality.
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Rhabdomyolysis is an important cause of acute renal failure (ARF) and renal vasoconstriction is the main mechanism in the pathogenesis of ARF. Lipid peroxidation due to hydroxyl radical (. OH) formation and redox cycling of myoglobin also have a role. ⋯ This study showed that endothelial dysfunction and increased vasoconstriction developed during rhabdomyolysis.. OH plays an important role in the development of these vascular responses. These findings suggest that decreased endothelium-dependent vasodilation and augmented renal sympathetic tonus contribute to the development of renal vasoconstriction during rhabdomyolysis-induced ARF.