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Related Concept Videos

Dialysis01:27

Dialysis

249
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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Nephrons01:10

Nephrons

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The kidneys are intricate organs with millions of working units known as nephrons. Each nephron features two major structures: the renal corpuscle, which facilitates blood plasma filtration, and the renal tubule, which handles the glomerular filtrate. Blood supply is directly linked to the nephrons. The renal corpuscle consists of the glomerulus, a capillary network, and the Bowman's capsule, a double-walled epithelial structure that encases the glomerulus. The filtering of blood plasma...
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Renal Corpuscle01:20

Renal Corpuscle

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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...
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Kidney Structure01:45

Kidney Structure

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The kidneys are two large bean-shaped organs located in the upper abdomen. They filter the blood several times a day to remove toxins and rebalance water and electrolytes of the circulatory system via the renal veins. The kidneys receive blood directly from the heart via the renal arteries. These arteries enter the kidney at the hilum, the concave surface of the bean, where they branch and divide into smaller vessels and capillaries.
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Factors Affecting Renal Clearance: Renal Impairment01:17

Factors Affecting Renal Clearance: Renal Impairment

48
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...
48
Renal Failure: Dose Adjustments01:11

Renal Failure: Dose Adjustments

54
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...
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Renal Involvement in Sepsis: Acute Kidney Injury.

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Sepsis-associated acute kidney injury (AKI) is common and deadly. Early recognition and treatment, including dialysis if needed, are crucial for critically ill patients to improve outcomes.

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Area of Science:

  • Nephrology
  • Critical Care Medicine
  • Infectious Diseases

Background:

  • Sepsis frequently causes acute kidney injury (AKI), a major contributor to mortality in intensive care units.
  • AKI in sepsis arises from complex, multifactorial causes, necessitating timely intervention.
  • Severe renal impairment may require renal replacement therapy to manage metabolic derangements.

Purpose of the Study:

  • To comprehensively review the definition, epidemiology, risk factors, and pathophysiology of AKI in sepsis.
  • To discuss current non-dialytic and dialytic treatment strategies for sepsis-induced AKI.
  • To examine pivotal clinical trials concerning fluid resuscitation in sepsis management.

Main Methods:

  • Literature review of existing studies on sepsis-associated AKI.
  • Synthesis of data on AKI definition, risk factors, and pathophysiology.
  • Analysis of treatment modalities and landmark fluid resuscitation trials.

Main Results:

  • AKI is a significant complication of sepsis with high morbidity and mortality.
  • Effective management involves prompt identification and appropriate interventions, including dialysis when indicated.
  • Fluid resuscitation strategies remain a cornerstone of sepsis management, with ongoing research.

Conclusions:

  • Understanding the pathophysiology of sepsis-AKI is key to developing targeted therapies.
  • A multidisciplinary approach integrating nephrology and critical care is essential.
  • Continued research into optimal AKI prevention and treatment in sepsis is warranted.