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Related Concept Videos

Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Excretion01:18

Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Excretion

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...
Drug Dosing: Geriatric Patients01:15

Drug Dosing: Geriatric Patients

Elderly individuals encompass a diverse population with varying degrees of age-related physiological changes. Defining the elderly presents challenges, as the geriatric population is often arbitrarily categorized as individuals older than 65. However, many individuals in this group lead active and healthy lives, with an increasing number surpassing 85 years and falling into the older elderly category. Physiological changes associated with aging impact performance capacity and homeostatic...
Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Distribution01:00

Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Distribution

Drug distribution in the human body is influenced by several factors, including plasma protein concentration, body composition, blood flow, tissue-protein concentration, and tissue fluid pH. Among these, changes in plasma protein concentration and body composition due to aging significantly affect how drugs are distributed within the body. Specifically, aging is associated with a decrease in albumin levels by about 10% and an increase in α1-acid glycoprotein levels. These alterations are not...
Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Metabolism01:18

Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Metabolism

Geriatric patients show significant variation in how their bodies process medications, which can change how effective and safe treatments are. The liver is the primary organ where drug metabolism occurs, involving two main types of chemical reactions: phase I and II. Phase I metabolism is driven by the cytochrome P450 enzyme system, which includes key types such as CYP3A, CYP2D6, and CYP2C9. Research indicates that while aging doesn't notably alter the levels or activity of these enzymes, it...
Diabetic Nephropathy01:28

Diabetic Nephropathy

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 occur due to afferent arteriolar...
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Chronic Kidney Disease III: Interprofessional Care

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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Related Experiment Video

Updated: Jul 2, 2026

5/6th Nephrectomy in Combination with High Salt Diet and Nitric Oxide Synthase Inhibition to Induce Chronic Kidney Disease in the Lewis Rat
08:50

5/6th Nephrectomy in Combination with High Salt Diet and Nitric Oxide Synthase Inhibition to Induce Chronic Kidney Disease in the Lewis Rat

Published on: July 3, 2013

Ischemic nephropathy in an elderly patient.

Satoshi Hoshide1, Kazuomi Kario, Kazuyuki Shimada

  • 1Department of Cardiology, Jcihi Medical University School of Medicine, Tochigi, Japan. hoshide@jichi.ac.jp

Geriatrics & Gerontology International
|August 21, 2008
PubMed
Summary

Ischemic nephropathy, a cause of hypertension and end-stage renal disease, can result from critical renal artery stenosis. This case highlights peripheral artery disease as a potential cause in elderly patients.

Related Experiment Videos

Last Updated: Jul 2, 2026

5/6th Nephrectomy in Combination with High Salt Diet and Nitric Oxide Synthase Inhibition to Induce Chronic Kidney Disease in the Lewis Rat
08:50

5/6th Nephrectomy in Combination with High Salt Diet and Nitric Oxide Synthase Inhibition to Induce Chronic Kidney Disease in the Lewis Rat

Published on: July 3, 2013

Area of Science:

  • Nephrology
  • Cardiology
  • Vascular Medicine

Background:

  • Congestive heart failure is common in patients with bilateral renal artery stenosis.
  • Ischemic nephropathy, defined as critical bilateral renal artery stenosis or global ischemia, is a significant cause of hypertension and end-stage renal disease.
  • Aging kidneys may exhibit stenosis in peripheral branches rather than main renal arteries.

Observation:

  • A case study involving an elderly hypertensive patient with advanced atherosclerosis.
  • The patient presented with multiple atherosclerotic peripheral renal arteries.

Findings:

  • Peripheral renal artery stenosis can lead to ischemic nephropathy.
  • This finding challenges the traditional view of main trunk stenosis being the sole cause.

Implications:

  • Peripheral renal artery stenosis should be considered in the diagnosis of ischemic nephropathy, particularly in elderly patients with atherosclerosis.
  • This broadens the understanding of renal artery stenosis and its contribution to kidney disease and hypertension.
  • Early diagnosis and management of peripheral renal artery stenosis may prevent progression to end-stage renal disease.