Acute Renal Failure Caused by Low-Osmolar Radiographic Contrast Media in Patients with Diabetic Nephropathy
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Four patients reacting with acute renal failure despite using low osmolar contrast media are reported. They all had diabetic nephropathy and renal insufficiency. A retrospective study of 75 consecutive patients examined with angiography showed that 13% had both of these two risk factors.Keywords:
Contrast-Induced Nephropathy
[Objective] To summarize the preventive essentials of contrast-induced nephropathy after percutaneous coronary artery interventional therapy.[Methods] We observed 128 patients who underwent percutaneous coronary artery interventional therapy and studied the effective preventive strategies of contrast-induced nephropathy.[Results] 6 of 128 patients had contrast-induced nephropathy.The incidence of contrast-induced nephropathy decreased.[Conclusion] The correct and effective measures may prevent from contrast-induced nephropathy.
Contrast-Induced Nephropathy
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Oxidative stress is hypothesized to play a role in the development of diabetes with and without nephropathy. In addition, it has been suggested that some metabolic abormalities associated with diabetes may be due to cytokine overproduction. In the light of this knowledge, we aimed to measure MDA levels as a marker of oxidative stress and the IL-6 level in diabetes with and without different stages of nephropathy. Plasma MDA levels in the group of NIDDM patients with advanced nephropathy were significantly higher than in the group of NIDDM patients without nephropathy, which had significantly higher levels compared with the control group. Although IL-6 levels were elevated in diabetic groups with and without nephropathy in comparison with the control, no significant difference was found between patient groups. As a conclusion, oxidative stress may play an important role in diabetes with and without nephropathy, but the IL-6 level may not be useful in the evaluation of diabetic nephropathy.
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Contrast-induced nephropathy (CIN) represents an important adverse effect of contrast media (CM) administration. Contrast-induced nephropathy is associated with prolonged hospitalization as well as increased cardiovascular morbidity, renal morbidity, and all-cause mortality. Several risk factors may predict CIN incidence, and various scores and ratios have been proposed to identify high-risk patients. Novel biomarkers may provide an earlier diagnosis of CIN. A multifactorial approach is required for CIN prevention including hydration, administration of low- or iso-osmolar CM, minimizing CM volume, and statin administration. Renal function may deteriorate after CM administration, even in the absence of CIN. Therefore, this deterioration may not be an “all or none” phenomenon; it may well occur in many patients receiving CM, with/without CIN, and may prove to be an underestimated risk factor. Patients should be followed up for longer periods as outpatients after CM exposure to assess kidney function and predict subsequent increased morbidity and mortality.
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Contrast induced nephropathy is the third most prevalent preventable cause of acute kidney injury in hospitalized patients. It defined as an absolute increase in serum creatinine ≥ 0.5 mg/dL and relative ≥ 25% increase.We studied the risk factors to intravenous injection contrast nephropathy after computed tomography.We studied 400 patients prospectively.The incidence of contrast induced nephropathy, with an absolute or a relative increase were 4.0% and 13.9%, respectively. Diabetes and cardiac failure were independent risk factors for CIN a relative increase de serum creatinine (O.R.: 3.5 [95% CI: 1.92-6.36], p < 0.01, 2.61 [95% CI: 1.14-6.03%], p < 0.05, respectively).We showed association between uses of intravenous injection contrast after computed tomography with acute injury renal, notably with diabetes and heart failure.
Contrast-Induced Nephropathy
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Contrast-induced nephropathy is an important cause of acute renal failure. We assess the efficacy of acetylcysteine for prevention of contrast-induced nephropathy among patients undergoing intravascular angiography.
Contrast-Induced Nephropathy
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Contrast-induced nephropathy has been the common cause of hospital-acquired acute kidney injury in the elderly patients. This study aimed to analyze the risk factors for contrast-induced nephropathy in over-aged patients undergoing coronary angiography or percutaneous coronary intervention. A total of 470 over-aged patients (≥80 years old) were judged as the contrast-induced nephropathy group ( n = 46) and non-contrast-induced nephropathy group ( n = 424) according to the postoperative 48-h serum creatinine levels. The patients' clinical information such as hypertension grade, number and degree of coronary artery stenosis, and death rate was compared. The risk factors for contrast-induced nephropathy were also analyzed. The hypertension grade in the contrast-induced nephropathy group was significantly higher than that in the non-contrast-induced nephropathy group ( P = 0.004). The degree of coronary artery stenosis was significantly more in the contrast-induced nephropathy group compared with the non-contrast-induced nephropathy group ( P = 0.003). The death rate of the contrast-induced nephropathy group (15.8%) was significantly higher than that of the non-contrast-induced nephropathy group (0.6%; P = 0.000). The percentage of patients with abnormal urine microalbumin was significantly bigger in the contrast-induced nephropathy group (62.5%) when comparing to the non-contrast-induced nephropathy group (23.6%; P = 0.00). Besides, there was also significant difference in the emergency/selective operation between the contrast-induced nephropathy group and non-contrast-induced nephropathy group ( P = 0.001). Further, hypertension grade ( P = 0.019), emergency/selective operation ( P = 0.025), degree of coronary artery stenosis ( P = 0.038), eGFR ( P = 0.034), and urine microalbumin ( P = 0.005) were the risk factors for contrast-induced nephropathy. Hypertension grade, emergency/selective operation, degree of coronary artery stenosis, eGFR, and urine microalbumin were the risk factors for contrast-induced nephropathy in over-aged patients receiving coronary angiography and percutaneous coronary intervention, providing guidance for the clinical prevention of contrast-induced nephropathy. Impact statement In this work, we evaluated the risk factors for contrast-induced nephropathy (CIN) in over-aged patients receiving coronary angiography (CAG) and percutaneous coronary intervention (PCI). We found that hypertension grade, emergency/selective operation, degree of coronary artery stenosis, eGFR, and urine microalbumin were the risk factors for CIN in over-aged patients receiving CAG and PCI. This study provides guidance for the clinical prevention of CIN in over-aged patients undergoing coronary intervention, highlighting that a perioperative comprehensive management strategy is needed to improve the prognosis.
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Contrast-Induced Nephropathy
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Contrast-induced nephropathy (CIN) is a common cause of acute kidney dysfunction. It is necessary to identify at-risk patients at early stages to implement preventive strategies to decrease the incidence of this nephropathy. However, mechanisms of CIN have not fully explained yet. Most predictive models for contrast-induced nephropathy in clinical use have modest ability and are only relevant to patients receiving contrast for coronary angiography. Further research is needed to develop models that can better inform patient-centred decision making, as well as improve the use of prevention strategies for contrast-induced nephropathy.
Contrast-Induced Nephropathy
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Contrast-Induced Nephropathy
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Intravenous contrast agents can cause acute decline in kidney function, especially in patients with risk factors.In this study, we aimed to examine the ameliorative effect N-acetylcysteine (NAC) to reduce the incidence of contrast nephropathy.This study was a prospective, randomized, double-blind clinical trial on 150 patients who underwent coronary angiography. The study was carried out on patients undergoing coronary angiography. Patients were randomly assigned into 2 groups of intervention group and control subjects. Intervention group took NAC 600 mg orally twice a day. It was administered one day before angiography and continued until the second day after angiography. Control subjects received saline only. Serum creatinine was measured before and three days after coronary angiography.There was no significant difference between intervention and control groups at baseline (P > 0.05). However, there was a significant decline in creatinine level among NAC patients (P = 0.001). Saline group had significantly higher proportion of nephropathy cases than NAC patients Conclusion: We found that the consumption of NAC is useful for contrast induced nephropathy (CIN) prevention.
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