Diabetes Mellitus Overview
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Questions and Answers

What is the primary cause of Diabetes Mellitus Type 1?

  • Age-related metabolic decline
  • Peripheral insulin resistance
  • Obesity-related factors
  • Autoimmune destruction of beta cells (correct)
  • At what age is one more likely to develop Diabetes Mellitus Type 2?

  • < 30 years old
  • < 50 years old
  • > 40 years old (correct)
  • > 25 years old
  • Which statement about insulin necessity in Diabetes Mellitus is true?

  • Type 2 diabetes always requires insulin
  • Type 1 diabetes requires insulin always (correct)
  • Type 1 diabetes requires insulin sometimes
  • Type 2 diabetes never requires insulin
  • What distinguishes the obesity association between Type 1 and Type 2 diabetes?

    <p>Type 1 diabetes has no association with obesity</p> Signup and view all the answers

    Which condition is commonly seen in Diabetes Mellitus Type 1?

    <p>Ketoacidosis</p> Signup and view all the answers

    Which of the following best describes the key difference in the underlying mechanisms of Type 1 and Type 2 diabetes?

    <p>Type 1 is characterized by high insulin sensitivity, whereas Type 2 is associated with low insulin sensitivity.</p> Signup and view all the answers

    A patient presents with severe glucose intolerance and is found to have HLA-DR3 and HLA-DR4 markers. Based on these findings, which type of diabetes is most likely?

    <p>Type 1 diabetes, due to the presence of HLA-DR3 and HLA-DR4 markers.</p> Signup and view all the answers

    Which of the following is TRUE regarding the levels of serum insulin observed in Type 2 diabetes?

    <p>They initially increase and may decrease later in the disease.</p> Signup and view all the answers

    Which of the following histological observations is most suggestive of Type 2 diabetes?

    <p>Islet of amyloid polypeptide (IAPP) deposits</p> Signup and view all the answers

    Why are prolonged exposure to epinephrine and glucocorticoid therapy relevant to Type 2 diabetes?

    <p>They contribute to peripheral insulin resistance.</p> Signup and view all the answers

    A patient diagnosed with type 1 diabetes mellitus presents with a condition often involving elevated ketone bodies. Which of the following conditions is most likely?

    <p>Ketoacidosis</p> Signup and view all the answers

    In type 2 diabetes mellitus, the presence of peripheral insulin resistance results in which of the following physiological responses?

    <p>Reduced glucose uptake by cells</p> Signup and view all the answers

    A study of pancreatic tissue reveals a reduced number of beta cells with evidence of leukocytic infiltrate. This finding is most suggestive of which type of diabetes?

    <p>Type 1 diabetes mellitus</p> Signup and view all the answers

    In a patient with type 2 diabetes, which of the following changes in serum insulin production is most likely to be seen over the course of the disease?

    <p>Initially increased, followed by a decrease</p> Signup and view all the answers

    While genetic predisposition exists for both forms of diabetes, the association for type 2 diabetes is considered:

    <p>Relatively strong</p> Signup and view all the answers

    In the context of diabetes mellitus, a patient is diagnosed with a condition characterized by a high level of insulin sensitivity. What other finding would be most consistent with this diagnosis?

    <p>Severe glucose intolerance</p> Signup and view all the answers

    A patient with a history of type 2 diabetes experiences a decrease in serum insulin levels over time. Which of the following factors most likely contributes to this change?

    <p>Long term peripheral insulin resistance and subsequent beta cell failure</p> Signup and view all the answers

    A tissue analysis from a diabetic patient reveals the presence of islet amyloid polypeptide (IAPP) deposits. This finding is most indicative of which condition?

    <p>Diabetes Mellitus Type 2 with variable beta cell numbers</p> Signup and view all the answers

    In the context of diabetes, which description is the MOST consistent with aetiology, in the absence of specific lab results?

    <p>Type 1: Destroyed beta cells and Type 2: Peripheral insulin resistance</p> Signup and view all the answers

    A patient, who is not obese, presents with a condition that necessitates insulin treatment. Of the factors listed, which one is most suggestive of Diabetes Mellitus Type 1?

    <p>Positive HLA-DR3 and HLA-DR4 markers</p> Signup and view all the answers

    Study Notes

    Diabetes Mellitus Type 1

    • Aetiology: Destruction of beta cells in the pancreas
    • Insulin necessity: Always
    • Age: Under 30 years old
    • Obesity Association: No
    • Genetic Predisposition: Weak
    • HLA System Risk: HLA-DR3 and HLA-DR4, severe
    • Glucose Intolerance: Not applicable
    • Insulin Sensitivity: High
    • Ketoacidosis: Common
    • Number of Beta Cells: Decreased
    • Serum Insulin Levels: Decreased
    • Histology: Islet of leukocytic infiltrate - less common
    • Nerve/Vascular Complications: Not applicable

    Diabetes Mellitus Type 2

    • Aetiology: Peripheral insulin resistance; also influenced by glucocorticoid therapy (Prednisone, dexamethasone, which can contribute to the issue). Prolonged epinephrine exposure can also play a factor.
    • Insulin necessity: Sometimes
    • Age: Over 40 years old
    • Obesity Association: Yes
    • Genetic Predisposition: Relatively strong
    • HLA System Risk: None
    • Glucose Intolerance: Mild/moderate
    • Insulin Sensitivity: Low
    • Ketoacidosis: Rare
    • Number of Beta Cells: Variable (with amyloid deposits)
    • Serum Insulin Levels: Initially increased, later decreased
    • Histology: Islet of amyloid polypeptide (IAPP) Deposits - more common
    • Nerve/Vascular Complications: Not applicable

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    Description

    This quiz explores the key differences between Type 1 and Type 2 Diabetes Mellitus. It covers aetiology, age of onset, insulin requirements, and genetic predisposition among other essential aspects. Test your understanding of these two distinct conditions!

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