Preliminary Report on the Association of Apolipoprotein E Polymorphisms, with Postoperative Peak Serum Creatinine Concentrations in Cardiac Surgical Patients

2000 ◽  
Vol 93 (2) ◽  
pp. 325-331 ◽  
Author(s):  
Sophia T. H. Chew ◽  
Mark F. Newman ◽  
William D. White ◽  
Peter J. Conlon ◽  
Ann M. Saunders ◽  
...  
Keyword(s):  
Cardiac Surgery ◽  
Renal Impairment ◽  
Serum Creatinine ◽  
Apolipoprotein E ◽  
Genetic Basis ◽  
University Hospital ◽  
Surgical Patients ◽  
Postoperative Changes ◽  
Apolipoprotein E Genotypes ◽  
Postoperative Serum

Background Renal dysfunction after cardiac surgery occurs in up to 8% of patients and is associated with major increases in morbidity, mortality, and cost. Genetic polymorphisms have been implicated as a factor in the progression of chronic renal disease, but a genetic basis for the development of acute renal impairment has not been investigated. The authors therefore tested the hypothesis that apolipoprotein E alleles are associated with different postoperative changes in serum creatinine after cardiac surgery. Methods The authors performed a prospective observational study with use of data from 564 coronary bypass surgical patients who were enrolled in an ongoing investigation of apolipoprotein E genotypes and organ dysfunction at a university hospital between 1989-1999. Renal function was assessed among apolipoprotein E genotype groups by comparisons of preoperative (CrPre), peak in-hospital postoperative (CrMax) and perioperative change (DCr) in serum creatinine values. Results The epsilon4 allele grouping (E2 = 2/2,2/3,2/4; E3 = 3/3; E4 = 3/4,4/4) was associated with a smaller increase in postoperative serum creatinine (perioperative change: E4, +0.17; E3, +0.26; E4, +0.27 mg/dl) and a lower peak postoperative creatinine than the epsilon2 and epsilon3 in univariate and multivariate analysis (peak in-hospital postoperative serum creatinine multivariate P = 0.015 vs. epsilon3, P = 0.038 vs. epsilon2). There was no difference in baseline creatinine among allele groups. Conclusions Inheritance of the apolipoprotein epsilon4 allele is associated with reduced postoperative increase in serum creatinine after cardiac surgery, compared with the epsilon3 or epsilon2 allele. This is the first report of a possible genetic basis for acute renal impairment. These data may contribute to renal risk stratification for cardiac surgery and raise questions regarding apolipoprotein E and the pathophysiology of acute renal injury.

scholarly journals Effect of Ascorbic Acid on Postoperative Acute Kidney Injury in Coronary Artery Bypass Graft Patients: A Pilot Study

2017 ◽  
Vol 20 (5) ◽  
pp. 214 ◽  
Author(s):  
Miha Antonic
Keyword(s):  
Acute Kidney Injury ◽  
Ascorbic Acid ◽  
Cardiac Surgery ◽  
Coronary Artery ◽  
Serum Creatinine ◽  
Renal Injury ◽  
Artery Bypass ◽  
Kidney Injury ◽  
Acid Group ◽  
Postoperative Serum

Background: Even minor postoperative reductions in renal function influence the outcome of cardiac surgery. The mechanisms of postoperative renal injury in cardiac surgery are multifactorial and include ischemia-reperfusion injury. The study investigates the effect of the antioxidant ascorbic acid on the postoperative acute kidney injury after elective CABG surgery.Methods: A prospective randomized single-center trial was conducted in on-pump coronary artery bypass patients. The patients in the ascorbic acid group received 2 grams of ascorbic acid 24 hours and 2 hours preoperatively and 1 gram twice daily five days after the surgery.  Postoperatively, the subjects were monitored for renal dysfunction and other complications.Results: 100 patients were included, with 50 patients in each study group. The groups were well matched for baseline demographics, preoperative medications, comorbidities, and had similar intraoperative characteristics. The incidence of postoperative acute kidney injury in the ascorbic acid group was 16% and 14% in the control group (P = .779). The groups also did not differ in peak postoperative serum creatinine (83 [33] µmol/L versus 83 [39] µmol/L; P = .434), the lowest postoperative creatinine clearance (96.40 ± 35.78 mL/min versus 90.89 ± 36.18 mL/min; P = .766), and time from surgery to the onset of peak postoperative serum creatinine (1.64 ± 1.34 days versus 1.92 ± 1.54 days; P = .393). There was no dialysis required in any patient. Conclusion: The results of this study did not demonstrate a significant protective effect of ascorbic acid on the incidence of postoperative acute renal injury in elective on-pump CABG patients.

scholarly journals Role of Serum Uromodulin in the Early Diagnosis of Chronic Kidney Disease

2021 ◽  
Vol 48 (1) ◽  
pp. 13-16
Author(s):  
D. Genov ◽  
A. Kundurdgiev ◽  
I. Ivanova ◽  
M. Nikolova ◽  
V. Pencheva ◽  
...  
Keyword(s):  
Chronic Kidney Disease ◽  
Kidney Disease ◽  
Early Diagnosis ◽  
Renal Impairment ◽  
Serum Creatinine ◽  
Cystatin C ◽  
Inverse Correlation ◽  
Abdominal Ultrasound ◽  
University Hospital

Abstract Background: The diagnosis of chronic kidney disease (CKD) is usually delayed, when significant functional renal impairment has already occurred. The diagnosis is complex and clinical and laboratory investigations play a crucial role. There are well-established markers of CKD – serum creatinine and cystatin C. However, the search for new reliable biomarkers that aid in the assessment of kidney function and predict the evolution of the disease is still in progress. Objective: To investigate the role of serum uromodulin (sUmod) as a marker for early diagnosis of renal impairment in patients with CKD. Materials and Methods: We investigated 70 patients, 28 male and 42 female, mean age 56.53 ± 11.753, with CKD in a prospective observational study. All patients were admitted to the Clinic of Nephrology at the “St. Ivan Rilski” University Hospital between April and November 2019. After obtaining written informed consent, laboratory blood and urine tests, abdominal ultrasound and sUmod investigations were performed in all patients. Results: Plasma uromodulin levels showed decrease with the increasing of the severity of renal impairment. sUmod displayed inverse correlation with serum creatinine (r = -0.467, p < 0.0001), cystatin C (r = -0.430, p < 0.0001) and urea (r = -0.495, p < 0.0001) and a positive correlation with eGFR (r = 0.628, p < 0.0001). Conclusion: The results of our study show that sUmod levels significantly correlate with all established laboratory parameters used for the evaluation of renal impairment. It can be used as a potential early biomarker for CKD diagnosis.

Serial application of the Cardiac Surgery Score (CASUS) to cardiac surgical patients

2010 ◽  
Vol 58 (S 01) ◽  
Author(s):  
A Badreldin ◽  
M Heldwein ◽  
T Bossert ◽  
K Hekmat
Keyword(s):  
Cardiac Surgery ◽  
Surgical Patients

Renal Impairment in Young Patients with Unilateral Ureteral Lithiasis Obstruction: What Factors can be Responsible?

2018 ◽  
Vol 69 (2) ◽  
pp. 375-378
Author(s):  
Catalin Pricop ◽  
Ileana Adela Vacaroiu ◽  
Daniela Radulescu ◽  
Daniel Andone ◽  
Dragos Puia
Keyword(s):  
Renal Impairment ◽  
Serum Creatinine ◽  
Young Patients ◽  
Kidney Injury ◽  
Contralateral Kidney ◽  
Reactive Protein ◽  
Ureteral Lithiasis ◽  
Unilateral Hydronephrosis ◽  
Duration Of Hospitalization ◽  
History Of

In the literature, occurrence of acute kidney injury (AKI) in young patients with unilateral ureteral lithiasic obstruction and without previous renal impairment is not very often reported, and the underlined pathophysiological mechanisms are poorly known; according to some studies, it is a false kidney failure, the increase in serum creatinine being due to absorbtion of obstructed urine in the affected kidney. We have conducted a retro and prospective study in order to identify the possible risk factors that can cause renal function impairment in young patients (18-40 years) with unilateral ureteral lithiasis obstruction and a normal contralateral kidney. Results. From 402 patients included in the study, 20.64% (83 cases) presented with serum creatinine ] 1.3 mg/dL. In patients with renal impairment, prevalence of male gender and history of NSAIDS use before admission were significantly higher than in non-AKI group. Serum urea/creatinine ratio, and estimated glomerular filtration rate (MDRD formula) were significantly higher, and respectively lower in AKI group. We found no significant differences between the two groups regarding age, prevalence of urinary tract infection after relief of obstruction, C-reactive protein value, and the duration of hospitalization. Conclusions. AKI in young patients with unilateral ureteral lithiasis obstruction and normal contralateral kidney is not quite a rare finding in our region. NSAIDs use can influence development of AKI, and should be used cautiously even in young patients with renal colic. In our opinion, the presence of AKI in patients with unilateral hydronephrosis demands urgent endourological intervention. Choosing conservative therapy in these patients, especially treatment with NSAIDS may aggravate the renal dysfunction.

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