Liver and Diseases I: Overview, Jaundice, Hepatitis

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Questions and Answers

Which liver enzyme is typically elevated in extrahepatic cholestasis?

  • Bilirubin
  • AST
  • ALT
  • ALP (correct)

Which of the following is NOT a common symptom of acute hepatitis?

  • Jaundice
  • Enlarged and tender liver
  • Abdominal pain (correct)
  • Decreased appetite

In a patient with cholestasis, which of the following would indicate decreased liver synthetic function?

  • Decreased vitamin K
  • Decreased prothrombin time
  • Increased prothrombin time (correct)
  • Increased albumin

Which of the following is a common cause of acute hepatitis, according to the text?

<p>Hepatitis viruses (B)</p> Signup and view all the answers

What is the main finding on ultrasound in a case of extrahepatic cholestasis?

<p>Dilated bile ducts (C)</p> Signup and view all the answers

What is the best indicator of acute hepatic injury in hepatitis?

<p>Serum ALT (B)</p> Signup and view all the answers

What is the primary mechanism of liver damage in hepatitis A?

<p>Cytopathic effect of the virus (B)</p> Signup and view all the answers

What is the clinical feature of chronic hepatitis?

<p>Lasting for more than 6 months (A)</p> Signup and view all the answers

Which of the following is a characteristic of hepatitis B virus?

<p>It is a DNA virus (B)</p> Signup and view all the answers

What is the primary mode of transmission for hepatitis A virus?

<p>Faecal-oral (A)</p> Signup and view all the answers

What is the characteristic clinical feature of hepatitis B chronic carriers?

<p>Presence of HBeAg or viral DNA (D)</p> Signup and view all the answers

What is the main function of the liver?

<p>Synthesis and metabolism of carbohydrates, lipids, proteins, and drugs (A)</p> Signup and view all the answers

Which type of jaundice is characterized by elevated unconjugated bilirubin levels and normal alkaline phosphatase?

<p>Haemolytic jaundice (B)</p> Signup and view all the answers

What is the most common cause of liver disease in the Western world?

<p>Alcohol (A)</p> Signup and view all the answers

How does Gilbert’s syndrome affect bilirubin metabolism?

<p>Decreases conjugation of bilirubin with glucuronic acid (D)</p> Signup and view all the answers

What type of cholestasis involves abnormal bile excretion within the liver?

<p>Intrahepatic cholestasis (A)</p> Signup and view all the answers

What is the characteristic feature of jaundice in cholestatic jaundice?

<p>Elevated conjugated bilirubin levels (B)</p> Signup and view all the answers

Which of the following is NOT a characteristic of Hepatitis C Virus (HCV) infection?

<p>Caused by a DNA virus, making vaccine development easier (A)</p> Signup and view all the answers

What is the primary mechanism of liver damage in Hepatitis C Virus (HCV) infection?

<p>Immune-mediated damage by T-cells (A)</p> Signup and view all the answers

Which of the following statements regarding the management of Hepatitis C Virus (HCV) infection is FALSE?

<p>Ribavirin is the preferred treatment for chronic HCV infection (A)</p> Signup and view all the answers

Which of the following is a special clinical feature of Hepatitis C Virus (HCV) infection?

<p>High risk of developing hepatocellular carcinoma (C)</p> Signup and view all the answers

Which of the following statements regarding the prophylaxis of Hepatitis C Virus (HCV) infection is correct?

<p>Avoiding high-risk factors is the primary prophylactic measure (B)</p> Signup and view all the answers

Which of the following statements about haemolytic jaundice is TRUE?

<p>It is characterized by an increase in serum unconjugated bilirubin levels (B)</p> Signup and view all the answers

The liver has a single supply of blood vessels.

<p>False (B)</p> Signup and view all the answers

Hepatocellular carcinoma is not considered a major primary liver disease.

<p>False (B)</p> Signup and view all the answers

Hepatitis B virus is the most common cause of liver disease in the West.

<p>False (B)</p> Signup and view all the answers

Elevated alkaline phosphatase is a characteristic feature of intrahepatic cholestasis.

<p>False (B)</p> Signup and view all the answers

Gilbert's syndrome is caused by a decrease in UDP-glucuronyl transferase activity.

<p>False (B)</p> Signup and view all the answers

Haemolytic jaundice is characterized by elevated conjugated bilirubin levels.

<p>False (B)</p> Signup and view all the answers

Prothrombin time is the best indicator of acute hepatic injury.

<p>False (B)</p> Signup and view all the answers

Hepatitis A can progress to chronic hepatitis.

<p>False (B)</p> Signup and view all the answers

HBV is a DNA virus.

<p>True (A)</p> Signup and view all the answers

Hepatitis B is mainly spread through the respiratory route.

<p>False (B)</p> Signup and view all the answers

The long incubation period is a characteristic feature of hepatitis A.

<p>False (B)</p> Signup and view all the answers

Chronic carriers of HBV have no risk of developing chronic hepatitis or cirrhosis.

<p>False (B)</p> Signup and view all the answers

In acute hepatitis, serum levels of alanine aminotransferase (ALT) and aspartate aminotransferase (AST) are typically elevated, while alkaline phosphatase (ALP) remains normal.

<p>True (A)</p> Signup and view all the answers

In extrahepatic cholestasis, the serum level of ALP is elevated, while ALT and AST levels are normal.

<p>False (B)</p> Signup and view all the answers

An ultrasound finding of dilated bile ducts and the level of obstruction indicates intrahepatic cholestasis.

<p>False (B)</p> Signup and view all the answers

In cases of cholestasis, a decreased serum vitamin K level can lead to an increased prothrombin time.

<p>True (A)</p> Signup and view all the answers

The presence of serum antibodies against hepatitis C virus (HCV) is a definitive indication of acute HCV infection.

<p>False (B)</p> Signup and view all the answers

In patients with haemolytic jaundice, there is a decrease in serum conjugated bilirubin.

<p>False (B)</p> Signup and view all the answers

Hepatitis A virus mainly spreads through personal contact.

<p>False (B)</p> Signup and view all the answers

Immunization with a vaccine is an effective method for preventing Hepatitis C virus infection.

<p>False (B)</p> Signup and view all the answers

Chronic carriers of Hepatitis C virus have a low risk of developing hepatocellular carcinoma.

<p>False (B)</p> Signup and view all the answers

Interferon is primarily used for managing chronic Hepatitis C virus infections.

<p>False (B)</p> Signup and view all the answers

The primary mechanism of liver damage in Hepatitis C virus infection is immune-mediated by T-cells.

<p>True (A)</p> Signup and view all the answers

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Study Notes

  • The liver has crucial functions such as synthesizing and metabolizing various substances, including bilirubin and bile acids.
  • Major primary liver diseases include viral hepatitis, alcohol liver disease, nonalcoholic fatty liver disease, and hepatocellular carcinoma.
  • In the West, alcohol and hepatitis C virus are significant causes of liver disease, while hepatitis B virus is more prevalent elsewhere.
  • Jaundice is characterized by yellowing of the skin and sclerae, often caused by elevated serum bilirubin levels.
  • Haemolytic jaundice results from increased red blood cell breakdown, while cholestatic jaundice is due to bile flow obstruction.
  • Hepatitis C virus (HCV) primarily spreads through blood or blood products and can lead to chronic hepatitis, cirrhosis, and hepatocellular carcinoma.
  • Hepatitis A spreads through the fecal-oral route, causing acute viral hepatitis with relatively short incubation and self-limiting nature.
  • Hepatitis B is a DNA virus that spreads through parenteral routes and close personal contact, with a long incubation period and potential for chronic carriers.

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