How Well Do You Know About Hepatic Portal System? Trivia Quiz

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| By Christina
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Christina
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Quizzes Created: 1 | Total Attempts: 392
| Attempts: 392
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  • 1/5 Questions

    The portal vein is responsible for what percent of blood that enters the liver?

    • 50%
    • 60%
    • 70%
    • 80%
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About This Quiz

Explore your knowledge of the Hepatic Portal System with this trivia quiz. Assess key aspects such as blood flow dynamics in the liver, effects of anesthetics, complications in cirrhotic patients, and the biochemical handling of ammonia in hepatic encephalopathy. Ideal for medical students and professionals.

How Well Do You Know About Hepatic Portal System? Trivia Quiz - Quiz

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  • 2. 
    Regarding cardiac presentation, the cirrhotic patient is expected to have: - ProProfs

    Regarding cardiac presentation, the cirrhotic patient is expected to have:

    • Low cardiac output, low arterial blood pressure, low systemic resistance

    • High cardiac output, high arterial blood pressure, high systemic resistance

    • High cardiac output, low arterial blood pressure, low systemic resistance

    • Low cardiac output, low arterial blood pressure, low systemic resistance

    Correct Answer
    A. High cardiac output, low arterial blood pressure, low systemic resistance
    Explanation
    Answer: c: the cirrhotic patient typically has a hyperdynamic circulation as described in c. The patient will present as warm and well perfused with systolic atrial pressures approximately 80-90mmHg. These changes are largely in part due to portal hypertension which stimulates an overproduction of vasodilators and ultimately leads to a reduced circulatory responsivity to sympathetic stimulation.

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  • 3. 
    With hepatic encephalopathy, astrocytes located in the blood brain barrier metabolize ammonia into ______, resulting in cerebral edema and astrocyte swelling. - ProProfs

    With hepatic encephalopathy, astrocytes located in the blood brain barrier metabolize ammonia into ______, resulting in cerebral edema and astrocyte swelling.

    • Glutamine

    • Reactive oxygen species

    • Glutamate

    • GABA

    Correct Answer
    A. Glutamine
    Explanation
    Answer: a. glutamine; its hyperosmolar nature pulls water intracellularly Astrocyte swelling results in the production of reactive oxygen and nitrogen species which can further compromise blood-brain barrier permeability Glutamate, an excitatory neurotransmitter, is also metabolized into glutamine. It is released from astrocytes in response to increased ammonia levels is responsible for the neuroexcitatory state of Type A hepatic encephalopathy and the neuroinhibitory state of Type C hepatic encephalopathy.

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  • 4. 
    At 1 MAC, which of our current volatile anesthetics most substantially decreases hepatic blood flow? - ProProfs

    At 1 MAC, which of our current volatile anesthetics most substantially decreases hepatic blood flow?

    • Desflurane

    • Sevoflurane

    • Isoflurane

    • Both a and c

    Correct Answer
    A. Desflurane
    Explanation
    Answer: a. desflurane: at 1 MAC desflurane causes a 30% reduction of hepatic blood flow. Sevoflurane has minimal effects on hepatic blood flow. Isoflurane produces a dose-dependent reduction in hepatic blood flow beyond 1 MAC.

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  • 5. 
    Which of the following are NOT associated with increased nephrotoxicity in the cirrhotic patient: - ProProfs

    Which of the following are NOT associated with increased nephrotoxicity in the cirrhotic patient:

    • NSAIDS

    • Contrast

    • ACE/ARBs

    • Aminoglycosides

    Correct Answer
    A. Contrast
    Explanation
    Contrast is not associated with increased nephrotoxicity in cirrhotic patients. While NSAIDs, ACE/ARBs, and aminoglycosides are known to have nephrotoxic effects, contrast agents used in medical imaging procedures do not have a direct impact on renal function in cirrhotic patients. This is because the nephrotoxicity associated with contrast agents primarily occurs in patients with pre-existing renal impairment or other risk factors, rather than being specific to cirrhotic patients.

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  • Current Version
  • Mar 21, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Jan 09, 2018
    Quiz Created by
    Christina
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