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Related Concept Videos

Heterotopic Auxiliary Rat Liver Transplantation With Flow-regulated Portal Vein Arterialization in Acute Hepatic Failure16:19

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Auxiliary liver transplantation provides a temporary support in acute hepatic failure, until regeneration of the failing liver. The heterotopic auxiliary liver transplantation (HALT) with portal vein arterialization (PVA) renders sufficient liver function. We developed an analogous technique in the rat, to examine the influence of the portal vein arterialization on the morphology and function of the...
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The acute liver failure animal model developed in the current study presents a feasible alternative for the study of potential therapies. The current model employs the combined effect of physical and drug-induced hepatic injury and provides a suitable time window to study the potential of novel...
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Acute respiratory failure is a condition characterized by the inability of the lungs to perform their primary function: gas exchange. This failure leads to insufficient oxygen levels (hypoxemia) in the blood, elevated carbon dioxide levels (hypercapnia), or both, causing critical impairment in organ function.
Definition: It is defined by specific criteria based on blood gas measurements. Hypoxemia happens when the partial pressure of oxygen (PaO2) falls below 60 mmHg. At the same time,...
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Type I Respiratory Failure, or hypoxemic respiratory failure, occurs when the partial pressure of oxygen (PaO2) in arterial blood falls below 60 mmHg while breathing room air without a corresponding increase in arterial carbon dioxide levels (PaCO2). This condition highlights a significant impairment in the lungs' capacity to oxygenate the blood.
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Acute Respiratory Failure-V01:29

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The treatment for acute respiratory failure varies based on factors like the underlying cause, overall health, and severity. A collaborative healthcare team is essential for early detection, often through arterial blood gas analysis. Identifying the cause is the primary goal, with treatment strategies adjusted for ventilation/perfusion (V/Q) mismatch, shunting, or diffusion impairment.
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Acute Respiratory Failure-III01:30

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Hypercapnic respiratory failure, also known as Type 2 or ventilatory respiratory failure, is a severe condition characterized by the body's inability to effectively remove carbon dioxide (CO2) from the bloodstream. It leads to an arterial CO2 pressure (PaCO2) exceeding 45 mmHg and a blood pH above 7.35. This situation indicates that the body's ventilatory demand, or the ventilation needed to maintain normal PaCO2 levels, surpasses its supply or the maximum gas flow achievable without...
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Updated: Jan 19, 2026

Heterotopic Auxiliary Rat Liver Transplantation With Flow-regulated Portal Vein Arterialization in Acute Hepatic Failure
16:19

Heterotopic Auxiliary Rat Liver Transplantation With Flow-regulated Portal Vein Arterialization in Acute Hepatic Failure

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Acute liver failure.

R Todd Stravitz1, William M Lee2

  • 1Hume-Lee Transplant Center of Virginia Commonwealth University, Richmond, VA, USA.

Lancet (London, England)
|September 10, 2019
PubMed
Summary
This summary is machine-generated.

Acute liver failure, a severe condition from rapid liver cell injury, presents with elevated aminotransferases and altered mentation. Management improvements have reduced mortality, with liver transplantation remaining a vital option.

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Area of Science:

  • Hepatology
  • Internal Medicine
  • Toxicology

Background:

  • Acute liver failure (ALF) is a rare, severe condition characterized by rapid hepatocyte injury without pre-existing liver disease.
  • It presents with elevated aminotransferases, altered mentation, and coagulopathy.
  • Differentiating ALF from decompensated cirrhosis is crucial for appropriate management.

Purpose of the Study:

  • To outline the key features, causes, and diagnostic approaches to acute liver failure.
  • To discuss current management strategies and their impact on patient outcomes.
  • To highlight the role of liver transplantation in severe cases.

Main Methods:

  • Review of existing literature and expert opinion on acute liver failure.
  • Analysis of common etiological agents including drug toxicity (paracetamol), ischemia, viral, and autoimmune hepatitis.
  • Emphasis on diagnostic criteria including medication history and serological testing.

Main Results:

  • A consistent pattern of rapid aminotransferase elevation, altered mentation, and disturbed coagulation defines ALF.
  • Common causes include paracetamol toxicity, viral hepatitis, and drug-induced liver injury from various sources.
  • Despite rarity and limited large trials, improved management has decreased mortality rates.

Conclusions:

  • Acute liver failure requires prompt diagnosis and management, considering diverse etiologies.
  • While medical management has improved outcomes, liver transplantation remains a critical life-saving intervention for nearly 30% of patients.
  • Further research is needed, but current expert-guided approaches enhance survival.