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Related Concept Videos

Renal Failure: Dose Adjustments01:11

Renal Failure: Dose Adjustments

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...
Continuous Renal Replacement Therapy01:30

Continuous Renal Replacement Therapy

Continuous Renal Replacement Therapy, also known as CRRT, is a procedural treatment for acute kidney injury (AKI) that gradually removes uremic toxins and fluids while maintaining acid-base balance and stabilizing electrolytes. It is particularly useful for hemodynamically unstable patients. Unlike intermittent hemodialysis, which is faster, CRRT provides a gentler approach over 24 hours, closely mimicking the function of natural kidneys. However, CRRT is not ideal for patients with...
Chronic Kidney Disease II: Clinical Manifestations01:24

Chronic Kidney Disease II: Clinical Manifestations

Chronic Kidney Disease (CKD) progressively impairs multiple body systems due to the accumulation of uremic toxins, which disrupt cellular functions across various organs.Neurologic symptomsNeurologic symptoms often arise early in CKD, as uremic toxin buildup drives changes in cognitive and motor functions. Patients frequently experience fatigue, headache, confusion, difficulty concentrating, and, in severe cases, seizures. Peripheral neuropathy commonly manifests as burning sensations in the...
Renal Regulation of Acid-Base Balance01:29

Renal Regulation of Acid-Base Balance

Metabolic reactions in the body produce nonvolatile acids, such as sulfuric acid, which generate an acid load of approximately 1 mEq of H+ per kilogram of body weight daily. Excreting H+ in the urine is essential to balance this acid load.
In the kidneys, cells within the proximal convoluted tubules (PCT) and the collecting ducts secrete hydrogen ions (H+) into the tubular fluid. Specifically, in the PCT, Na+/H+ antiporters secrete H+ while reabsorbing Na+.
However, the intercalated cells in...
Hemodialysis II: Procedure and Complications01:24

Hemodialysis II: Procedure and Complications

DialyzersA hemodialysis (HD) dialyzer is a plastic cartridge containing thousands of parallel hollow fibers, which serve as semipermeable membranes. These fibers are typically made from cellulose-based or other synthetic materials. During HD, blood is pumped into the top of the cartridge and distributed among these fibers. Simultaneously, dialysis fluid, known as dialysate, is introduced into the bottom of the cartridge, bathing the outside of the fibers. Across the semipermeable membrane,...
Dialysis01:27

Dialysis

Renal failure occurs when the kidneys lose their ability to filter waste products from the blood effectively. It can be classified into two types: acute renal failure (ARF) and chronic renal failure (CRF).
Acute kidney injury develops suddenly and can be caused by pre-renal causes (e.g., hypovolemia, shock), intrinsic renal causes (e.g., acute tubular necrosis), or post-renal causes (e.g., urinary obstruction). In contrast, chronic renal failure progresses gradually over time and is often...

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Related Experiment Video

Updated: Jun 29, 2026

Measurement of Tissue Oxygenation Using Near-Infrared Spectroscopy in Patients Undergoing Hemodialysis
04:36

Measurement of Tissue Oxygenation Using Near-Infrared Spectroscopy in Patients Undergoing Hemodialysis

Published on: October 2, 2020

[Hemoglobin variability in chronic renal failure patients].

Zoltán Kiss1, Imre Kulcsár, István Kiss

  • 1Amgen Kft. Orvostudományi Osztály Budapest Szabadság tér 7. 1054. zkiss@amgen.com

Orvosi Hetilap
|October 10, 2008
PubMed
Summary

Hemoglobin (Hb) stability is challenging in chronic renal failure patients, with Hb variability linked to higher morbidity and mortality. Further research is needed to understand Hb variability and its impact on treatment strategies.

Related Experiment Videos

Last Updated: Jun 29, 2026

Measurement of Tissue Oxygenation Using Near-Infrared Spectroscopy in Patients Undergoing Hemodialysis
04:36

Measurement of Tissue Oxygenation Using Near-Infrared Spectroscopy in Patients Undergoing Hemodialysis

Published on: October 2, 2020

Area of Science:

  • Nephrology
  • Hematology

Context:

  • Maintaining stable hemoglobin (Hb) levels is a significant clinical challenge in patients with chronic renal failure (CRF).
  • Recent observational trials suggest that inter-patient Hb level instability may correlate with increased morbidity and mortality in CRF patients.

Purpose:

  • To review and summarize the current scientific literature on hemoglobin variability in chronic renal failure.
  • To clarify the incidence, clinical significance, and underlying causes of Hb variability in this patient population.

Summary:

  • Hb variability is influenced by numerous factors, including patient condition, medical interventions, and treatments.
  • While some Hb fluctuation is a normal physiological adaptation, its characteristics and extent differ in CRF patients.
  • Further clinical research is essential to investigate Hb variability and the impact of specific treatments.

Impact:

  • Highlights the clinical importance of Hb stability and variability in CRF management.
  • Underscores the need for more precise studies to guide treatment strategies for renal anemia.
  • Emphasizes incorporating Hb stability and variability considerations into future treatment protocols for renal anemia.