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Factors Affecting Renal Clearance: Renal Impairment01:17

Factors Affecting Renal Clearance: Renal Impairment

433
Renal dysfunction significantly impairs the renal clearance of drugs, leading to potential complications in drug therapy. Renal failure, which can be caused by various factors, poses a significant challenge in the elimination of drugs from the body.
One condition associated with renal failure is uremia. Uremia is characterized by impaired glomerular filtration and fluid accumulation in the body. This condition hinders the renal clearance of drugs, resulting in drug accumulation and potential...
433
Renal Corpuscle01:20

Renal Corpuscle

7.1K
The glomerulus and Bowman's capsule are two essential components of the nephron, which is the functional unit of the kidney. These microscopic structures play a critical role in the process of blood filtration to produce urine.
Glomerulus: Structure and Function
The glomerulus is a tiny, intricate network of capillaries located at the beginning of the nephron. It's enveloped by the Bowman's capsule and receives its blood supply from an afferent arteriole, which divides into numerous...
7.1K
Renal Clearance01:23

Renal Clearance

2.4K
The glomerular filtration rate (GFR) is a critical marker of kidney function, reflecting the efficiency of filtration by the glomeruli. Renal clearance of specific substances, such as inulin or creatinine, is commonly used to measure GFR.
Renal clearance refers to the volume of plasma cleared of a specific substance, such as creatinine, per unit of time. To measure clearance, urine samples are collected over a 24-hour period during each bladder voiding, followed by a single blood sample at the...
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Renal Drug Clearance: Comparison Between Renal Excretion Methods01:08

Renal Drug Clearance: Comparison Between Renal Excretion Methods

571
Renal clearance is a critical parameter encompassing kidney filtration, secretion, and reabsorption processes. It is calculated using a specific equation to determine the rate at which the kidneys clear a drug.
Renal clearance is often associated with the renal glomerular filtration rate (GFR), which represents the rate at which plasma is filtered through the glomeruli in the kidney. When drug reabsorption is minimal and there is no active secretion, renal clearance is closely related to the...
571
Renal Tubule and Collecting Duct01:24

Renal Tubule and Collecting Duct

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The renal tubule is divided into three parts: the proximal convoluted tubule (PCT), the Loop of Henle (LOH), and the distal convoluted tubule (DCT).
Proximal Convoluted Tubule (PCT):
The PCT is the initial segment of the renal tubule, extending from the Bowman's capsule that encloses the glomerulus. Its convoluted structure and microvilli-lined cells increase the surface area for reabsorption. The PCT reabsorbs glucose, amino acids, sodium, and water from the filtrate, ensuring essential...
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Renal Failure: Dose Adjustments01:11

Renal Failure: Dose Adjustments

442
In patients with renal impairment, drugs undergo significant changes in their pharmacokinetics, which require dosage adjustments to ensure safe and effective therapy.
Reduced renal clearance and elimination rate are common outcomes of renal impairment. These alterations lead to a prolonged elimination half-life and an altered apparent volume of distribution for drugs. As a result, dosage adjustments are typically necessary to maintain optimal drug levels in the body.
However, dosage adjustments...
442

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Updated: Jan 21, 2026

Direct Drug Delivery to Kidney via the Renal Artery
11:18

Direct Drug Delivery to Kidney via the Renal Artery

Published on: April 17, 2021

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Renal angiomyolipoma.

Selahattin Çalışkan1, Gülistan Gümrükçü2, Emrah Özsoy1

  • 1Haydarpaşa Numune Training and Research Hospital, Department of Urology, Istambul, Turquey.

Revista Da Associacao Medica Brasileira (1992)
|August 8, 2019
PubMed
Summary

This study reviewed 28 renal angiomyolipoma cases over 13 years, finding no recurrences after treatment. Awareness of these benign renal tumors and their management is crucial for clinicians.

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Area of Science:

  • Urology
  • Oncology
  • Nephrology

Background:

  • Angiomyolipoma is a common benign solid renal tumor.
  • This study investigates renal angiomyolipoma characteristics and patient outcomes.
  • Data spans a thirteen-year period from July 2005 to May 2018.

Purpose of the Study:

  • To characterize renal angiomyolipomas.
  • To evaluate clinical outcomes of patients with renal angiomyolipomas.
  • To assess treatment modalities and recurrence rates.

Main Methods:

  • Retrospective review of medical records for patients who underwent nephrectomy.
  • Inclusion criteria: patients diagnosed with angiomyolipoma.
  • Data collected: laboratory results, radiology, and pathology reports.

Main Results:

  • 28 patients included (8 male), mean age 55.89 years.
  • Treatments included open and laparoscopic nephrectomy; 12 partial nephrectomies performed.
  • Pathology revealed 23 fat-rich, 4 fat-poor, and 1 epithelioid angiomyolipoma.
  • No recurrences observed during a mean follow-up of 91.21 months.

Conclusions:

  • Angiomyolipoma is a rare entity in urological practice.
  • Clinicians should be aware of potential complications.
  • Effective patient management strategies are essential.