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Related Concept Videos

Dialysis01:27

Dialysis

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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

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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

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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
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The function of the kidneys is to filter, reabsorb, secrete, and excrete. Every day the kidneys filter nearly 180 liters of blood, initially removing water and solutes but ultimately returning nearly all filtrates into circulation with the help of osmoregulatory hormones. This process removes wastes and toxins but is also crucial to maintain water and electrolyte levels. Most of these functions are performed by the tiny but numerous nephrons contained within the kidneys.
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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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Renal Drug Excretion: Overview01:15

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As primary excretory organs, the kidneys maintain homeostasis by removing waste substances from the bloodstream. They comprise over a million units called nephrons, which serve as the kidney's functional units.
A nephron consists of two primary structures: the renal corpuscle and the renal tubule. The renal corpuscle contains the glomerulus, a network of capillaries where the first step of renal excretion, glomerular filtration, occurs. Blood pressure forces water, ions, and small molecules...
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Is Dialysis Nephrology's Original Sin?

Andrew J Cohen1

  • 1Alpert Medical School, Brown University, Providence, Rhode Island.

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Summary
This summary is machine-generated.

Nephrology

Keywords:
BurnoutMedicarechronic kidney disease (CKD)corporatizationdialysisend-stage kidney disease (ESKD)ethicshemodialysisnephrologypublic policy

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Area of Science:

  • Nephrology
  • Medical History
  • Health Policy

Background:

  • Hemodialysis introduction and Medicare coverage in 1972 shaped nephrology.
  • Reimbursement focus on dialysis created benefits and challenges for nephrologists.

Observation:

  • A schism between researchers and clinicians emerged.
  • Dialysis care led to clinician burnout and recruitment difficulties.
  • Ethical issues arose from corporatized medicine.

Findings:

  • Nephrology's growth was hindered by limited clinical research.
  • Clinicians faced demanding schedules and electronic health record burdens.
  • Specialty faces recruitment challenges due to morale and ethical concerns.

Implications:

  • Nephrology's history reflects broader US healthcare issues.
  • Refocusing on preventive care and new treatments is crucial.
  • Shifting dialysis care to nonphysician providers should be accelerated.