scholarly journals Calculation of Drug Dosage In Chronic Kidney Disease

Author(s):  
Tenta Hartian Hendyatama ◽  
Nunuk Mardiana

Kidneys are the main organ in fluid and electrolyte homeostasis. It also have an important role in eliminating various types of drugs. Drug elimination in the kidney is affected by plasma drug concentrations, plasma protein binding, and kidney function. Glomerular filtration rate (GFR) represents the kidney function. Thus by knowing it, drug dosage can be determined.Chronic kidney disease alter the effect of drug, some decrease drug effect but more often increase drug toxicity. Chronic kidney disease affect the pharmacodynamic and pharmacokinetic of drug. Therefore, providing an optimal treatment for CKD patient, knowledge of the pharmacokinetic and pharmacodynamic changing in CKD is needed.Exploring the patient's history and carrying out complete physical examination is important before giving the drug to patients with impaired kidney function. In addition, identifying drugs that have the potential to cause nephrotoxicity and drug interactions is also important.The body response to drugs in patient with CKD is very varied, complex, and individual. Dosage must be based on several factors, not only glomerular filtration rates but also other comorbid diseases, interactions with other drugs and clinical condition of the patient.

Author(s):  
V.G. Maidannyk ◽  
E.A. Burlaka ◽  
I.V. Bagdasarova ◽  
S.P. Fomina ◽  
V.M. Nepomnyaschiy

Aim of the study: to study the indicators of cellular hypoxia and apoptosis in pediatric patients with nephritic type of chronic glomerulonephritis. Material and methods: 52patients with active stage of nephrotic type ofChronic glomerulonephritis were inspected. All patients were divided into groups of Chronic Kidney Disease (CKD) by the level of glomerular filtration rate (GFR). Detection of the hypoxia–induced factor (HIF) and antiapoptotic factor Bcl–xL in serum performed using Western Blotting assay and immunohistochemically on material of kidney biopsies. Imaging was done using confocal laser microscopy. Results: it has been found that the disease course is accompanied by increased levels of hypoxia–induced factor HIF–1a and decreased expression of antiapoptotic factor Bcl–xL (in plasma and on biopsies). Detected changes significantly depended on the degree of proteinuria and declining of glomerular filtration rate. Dependence between the levels of hypoxia–induced damages and level of kidney function impairment was documented. In children with Chronic Kidney Disease (SKDIst.) HIF–1a was at level 128.6±2.3% (P<0.01, compared to Control group), in children with CKD II–III st. – 141.3±1.9% (P<0.01, compared to Control group and CKD I st.). Level of antiapoptotic defense in children with nephrotic type of Chronic glomerulonephritis was related to the level of kidney function impairment as well. In group of patient with CKDIst. Bcl–xL expression was down–regulated to 75.1±2.2%, in group with CKDII–IIIst. — to 60.1+1.8% (P<0.01 and P<0.001, compared to Control group, respectively). The level of evaluated changes has a dependence on levels ofproteinuria and kidney function impairment. Conclusion. Studied parameters might be used as predictors of unfavorable disease course.


Author(s):  
Samel Park ◽  
Nam‐Jun Cho ◽  
Nam Hun Heo ◽  
Eun‐Jung Rhee ◽  
Hyowook Gil ◽  
...  

Background The relationship between vascular calcification and chronic kidney disease is well known. However, whether vascular calcification affects renal function deterioration remains unclear. We investigated whether kidney function deteriorated more rapidly in individuals with higher vascular calcification indicated by the coronary artery calcium score (CACS). Methods and Results Individuals with a normal estimated glomerular filtration rate (>60 mL/min per 1.73 m 2 ) who underwent cardiac computed tomography in our institution (a tertiary teaching hospital in Cheonan, Korea) from January 2010 to July 2012 were retrospectively reviewed. All participants were aged 20 to 65 years. Among 739 patients, 447, 175, and 117 had CACSs of 0, 1 to 99, and ≥100 units, respectively. The participants were followed for 7.8 (interquartile range, 5.5–8.8) years. The adjusted annual estimated glomerular filtration rates declined more rapidly in patients in the CACS ≥100 group compared with those in the CACS 0 group (adjusted‐β, −0.40; 95% CI, −0.80 to −0.03) when estimated using a linear mixed model. The adjusted hazard ratio in the CACS ≥100 group for Kidney Disease: Improving Global Outcomes criteria (a drop in estimated glomerular filtration rate category accompanied by a 25% or greater drop in estimated glomerular filtration rate) was 2.52 (1.13–5.61). After propensity score matching, more prevalent renal outcomes (13.2%) were observed in patients with a CACS of ≥100 compared with those with a CACS of 0 (1.9%), with statistical significance ( P =0.004). Conclusions Our results showed that renal function declined more rapidly in patients with higher CACSs, suggesting that vascular calcification might be associated with chronic kidney disease progression.


2018 ◽  
Vol 4 (3) ◽  
pp. 37-42
Author(s):  
Elena Kosmacheva ◽  
Anna Babich

Introduction. Chronic renal failure is a significant issue regarding treatment of patients after liver transplantation. One of the factors determining the impaired renal function after liver transplantation is a long-term immunosuppressive therapy based on calcineurin inhibitors. The objective of the study was to evaluate the dynamics of renal function, depending on the use of various calcineurin inhibitors in the long-term postoperative period in liver recipients in real clinical practice. Materials and methods. A retrospective analysis of the renal function in patients operated in the State Public Health Budget Institution “Scientific Research Institute – S.V. Ochapovsky Regional Clinic Hospital № 1”, Krasnodar Region, was carried out. This article describes dynamics of creatinine level and glomerular filtration rate (GFR) in patients before liver transplant, as well as 6 months, 1, 2 and 3 years after surgery. GFR was calculated using the CKD-EPI formula (Chronic Kidney Disease Epidemiology Collaboration). Statistical processing of the results was carried out using the Statistica 10 software package. Results and discussion. Before transplantation, the level of creatinine in the blood plasma was 82.9±19.8 mmol/l, 6 months later a20.4% increase in creatinine was registered (p=0.004), 12, 24 and 36 months later – it increased by 24.8% (p=0.00001), 24.4% (p=0.0004), and 26.0% (p=0.0005), respectively. Both cyclosporine and tacrolimus caused an increase in the level of creatinine. Baseline GFR was 83.4±25.9, the reduction in GFR occurred in comparison with the baseline by 14.2% (p=0.0005), 18.8% (p=0.00001), 20.2% (p=0.00003), 22.6% % (p=0.00006) 6, 12, 24 and 36 months later, respectively. The degree of the decrease in GFR against the background of tacrolimus therapy did not differ significantly from that in case of cyclosporine. Verification of chronic kidney disease and the administration of statins were recorded in isolated cases. Conclusions. In liver recipients, the level of creatinine rises and GFR decreases. Reduction of kidney function occurs against the background of both inhibitors of calcineurin, in connection with which it is necessary to increase the doctors’ alertness for early detection of a decrease in glomerular filtration rate with further verification of chronic kidney disease.


2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Pascal Schlosser ◽  
Adrienne Tin ◽  
Pamela R. Matias-Garcia ◽  
Chris H. L. Thio ◽  
Roby Joehanes ◽  
...  

AbstractChronic kidney disease is a major public health burden. Elevated urinary albumin-to-creatinine ratio is a measure of kidney damage, and used to diagnose and stage chronic kidney disease. To extend the knowledge on regulatory mechanisms related to kidney function and disease, we conducted a blood-based epigenome-wide association study for estimated glomerular filtration rate (n = 33,605) and urinary albumin-to-creatinine ratio (n = 15,068) and detected 69 and seven CpG sites where DNA methylation was associated with the respective trait. The majority of these findings showed directionally consistent associations with the respective clinical outcomes chronic kidney disease and moderately increased albuminuria. Associations of DNA methylation with kidney function, such as CpGs at JAZF1, PELI1 and CHD2 were validated in kidney tissue. Methylation at PHRF1, LDB2, CSRNP1 and IRF5 indicated causal effects on kidney function. Enrichment analyses revealed pathways related to hemostasis and blood cell migration for estimated glomerular filtration rate, and immune cell activation and response for urinary albumin-to-creatinineratio-associated CpGs.


2018 ◽  
Author(s):  
Mustafa Arici

Chronic kidney disease (CKD) has diverse presentations that are frequently subclinical early in its course but symptomatic in more advanced stages. Quite commonly, kidney disease is diagnosed as an incidental finding in blood or urine tests. It is therefore crucial to understand how to assess kidney function tests and know the diverse presentations of kidney diseases in clinical practice. Assessment of kidney function mainly comprises three important steps: measuring glomerular filtration rate (GFR), estimation of urine albumin or protein excretion, and urinalysis/sediment examination. Estimating GFR based on a filtration marker (usually serum creatinine) is now widely accepted as the initial test. Several GFR prediction equations that use serum creatinine or other filtration markers along with certain patient characteristics (such as age, gender, and race) are used to estimate GFR, though several limitations must be considered when interpreting their results. Measurement of proteinuria or albuminuria provides insights into etiology (glomerular versus other parenchymal kidney diseases) and an assessment of risk of progression (ie, greater proteinuria, higher risk of progression). A complete examination of urine should be performed in all kidney patients. Urinalysis/sediment examination provides important information for both differential diagnosis of acute kidney disease (AKD) and CKD and clues for underlying etiologies of kidney disease. Several serologic tests and selected imaging studies complement the assessment of kidney diseases. Renal biopsy is occasionally required to specify the exact diagnosis and direct the treatment. All these investigations should be performed to determine the duration of kidney disease (ie, acute or chronic), designate the specific etiology, assess the risk for progression, and evaluate the presence of complications. Recently, several risk stratification scores or prediction models were developed for early diagnosis or predicting prognosis of acute kidney injury or CKD. These risk models may help to decrease the huge burden of kidney diseases on the individual as well as social level. This review contains 1 figure, 11 tables and 29 references Key Words: albumin-creatinine ratio, albuminuria, biomarkers, eGFR, chronic kidney disease, cystatin C, history, imaging, glomerular filtration rate , physical examination, renal biopsy, serum creatinine, urinalysis


2018 ◽  
Vol 6 (25) ◽  
pp. 26-30
Author(s):  
Praveen Ratanasrimetha ◽  
Miguel Quirich ◽  
Sorot Phisitkul

Serum creatinine and glomerular filtration rate (GFR) are the current standard tests tomeasure kidney function. The baseline GFR does not reflect full function of the kidney sincehuman kidneys do not always work at full capacity. Similarly, serum creatinine is not a sensitivemeasure for kidney function or injury. In healthy individuals the GFR physiologically increasesin response to certain stresses or stimuli, such as protein loading.Renal functional reserve (RFR) is defined as the difference between the maximalglomerular filtration rate (generally determined after oral or intravenous protein loading) and thebaseline glomerular filtration rate. The absence of a normal RFR can help identify patients whoare more susceptible to kidney injury. The RFR is also important in patients who develop acutekidney injury and chronic kidney disease. Even though the GFR might return to a baselinelevel, there may be some loss of RFR which can make the patient more susceptible to anotherepisode of kidney injury.Acute kidney injury and chronic kidney disease are considered interconnected syndromes;each is a risk factor for the other. There are no current recommendations regarding theperformance of routine determinations of RFR. Physicians should focus on clinical history andphysical examination in patients with a history of prior episodes of acute kidney injury, monitorrenal function, and avoid nephrotoxic insults.


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