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Definition Diabetic nephropathy is a chronic kidney complication that results from prolonged hyperglycemia.Prevalence It is the most common cause of chronic kidney disease (CKD) and end-stage renal disease (ESRD) worldwide, affecting up to half of individuals with diabetes.Pathophysiology • Sustained hyperglycemia triggers multiple hemodynamic and metabolic changes in the kidney. • Early in the disease, increased renal blood flow and glomerular hyperfiltration...
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Nursing management for nephrotic syndrome adapts as the disease progresses, with strategies evolving to address advancing symptoms and complications.Early-Stage Management In the early stages, nursing interventions for nephrotic syndrome resemble those used in managing acute glomerulonephritis, focusing on symptom monitoring, fluid balance, and managing mild to moderate edema.Vital Signs: Regularly monitor blood pressure, pulse, respiratory rate, and temperature to promptly identify...
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Chronic kidney disease (CKD) requires collaborative and comprehensive management. CKD progresses through stages and can lead to end-stage kidney disease (ESKD) if untreated. Interprofessional collaboration and patient education are crucial, enabling patients to manage their health and improve their quality of life.Diagnostic approach for chronic kidney diseaseThe diagnosis of CKD primarily focuses on the glomerular filtration rate (GFR), which assesses kidney function by measuring how well...
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Nephrotic Syndrome I : Introduction01:24

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Nephrotic Syndrome is a chronic kidney disorder defined by clinical findings such as severe proteinuria, hypoalbuminemia, hyperlipidemia, and edema. These symptoms result from damage to the glomeruli, the kidney’s filtering units, increasing their permeability to proteins.Definition and Meaning:Proteinuria, defined as the loss of more than 3.5 grams of protein per day in adults, is a crucial feature of nephrotic syndrome. This condition is often accompanied by edema, the accumulation of...
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Chronic Kidney Disease I: Introduction01:25

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Chronic Kidney Disease (CKD) arises when the kidneys progressively lose their ability to function, ultimately leading to end-stage renal disease. At this advanced stage, the kidneys can no longer filter waste or maintain essential body functions, requiring renal replacement therapy (RRT) through dialysis or a kidney transplant for survival.Early-stage chronic kidney disease and detection challengesIn CKD's early stages, symptoms often remain absent because healthy nephrons compensate for...
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In geriatric patients, renal physiology undergoes significant changes, including diminished renal blood flow and a lower glomerular filtration rate (GFR), leading to alterations in medication clearance. Drugs such as aminoglycoside antibiotics, lithium, and digoxin, which rely on glomerular filtration for removal from the body, particularly impact pharmacokinetics. These drugs tend to have slower clearance rates in older adults, necessitating careful dosage considerations.Evaluation of renal...
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Nephrosclerosis: update on a centenarian.

Alain Meyrier1

  • 1Université Paris-Descartes, Paris, France Département de Néphrologie, Hôpital Georges Pompidou (AP-HP), Paris, France.

Nephrology, Dialysis, Transplantation : Official Publication of the European Dialysis and Transplant Association - European Renal Association
|December 10, 2014
PubMed
Summary

Nephrosclerosis, kidney changes from hypertension and aging, causes renal insufficiency, especially in Black individuals. Angiotensin II antagonists offer kidney protection, unlike some other antihypertensives.

Keywords:
FSGSageingblack racehypertensionnephrosclerosisrenal autoregulationrenal hypoxia

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Area of Science:

  • Nephrology
  • Vascular Biology
  • Renal Pathology

Background:

  • Nephrosclerosis encompasses kidney compartment changes due to hypertension and aging.
  • Arteriolosclerosis and arteriolohyalinosis contribute to glomerular damage and tubulointerstitial fibrosis, predicting renal function decline.
  • It disproportionately affects Black individuals, leading to severe renovasculopathy and rapid renal failure with FSGS.

Purpose of the Study:

  • To define nephrosclerosis, its pathogenesis, and differential impact across ethnicities.
  • To explore the role of angiotensin II and inflammatory pathways in renal fibrosis.
  • To evaluate the renoprotective effects of different antihypertensive drug classes.

Main Methods:

  • Review of pathological changes in nephrosclerosis.
  • Analysis of genetic factors in different populations.
  • Examination of animal models for renal vascular disease.
  • Assessment of pathophysiological mechanisms including autoregulation and hypoxia.
  • Comparison of antihypertensive drug efficacy in protecting kidneys.

Main Results:

  • Nephrosclerosis involves arteriolosclerosis, arteriolohyalinosis, glomerular lesions (FSGS), and tubulointerstitial fibrosis.
  • Genetic factors may independently influence vascular lesions and hypertension in Black individuals.
  • Renal vascular lesions can occur without hypertension, involving angiotensin II and inflammatory cascades.
  • Loss of renal blood flow autoregulation and ischemia drive glomerular and interstitial damage.
  • Angiotensin II antagonists show renoprotective effects, while dihydropyridine calcium-channel blockers and vasodilators do not.

Conclusions:

  • Nephrosclerosis is a complex kidney disease with significant ethnic disparities.
  • Understanding pathophysiological mechanisms is crucial for targeted therapies.
  • Angiotensin II antagonists represent a preferred therapeutic strategy for kidney protection in nephrosclerosis.