Pyrexia of Unknown Origin (P.U.O) Quiz

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Questions and Answers

What is the normal range for body temperature?

  • 35.5-36.4°C
  • 38.5-39.4°C
  • 36.5-37.4°C (correct)
  • 37.5-38.5°C

According to Petersdorf and Beeson, how is pyrexia of unknown origin (PUO) defined?

  • Temperature greater than 39.0°C on several occasions, accompanied by more than 4 weeks of illness, and failure to reach a diagnosis after 2 weeks of in-patient investigation.
  • Temperature greater than 38.3°C on several occasions, accompanied by more than 3 weeks of illness, and failure to reach a diagnosis after 1 week of in-patient investigation. (correct)
  • Temperature greater than 38.0°C on several occasions, accompanied by more than 3 weeks of illness, and failure to reach a diagnosis after 1 week of in-patient investigation.
  • Temperature greater than 37.5°C on several occasions, accompanied by more than 2 weeks of illness, and failure to reach a diagnosis after 2 weeks of in-patient investigation.

What is the term for an abnormally high body temperature ranging from 37.5 - 38°C?

  • Hypothermia
  • Hyperpyrexia
  • Normothermia
  • Low grade fever (correct)

What are some physiological causes of fever?

<p>After meals, after vigorous exercise (B)</p> Signup and view all the answers

What is the main marker associated with fever?

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

What is the term for the elevation of body temperature for more than three weeks (38.3°C or more) with no definite diagnosis made after initial investigations?

<p>Pyrexia of unknown origin (PUO) (B)</p> Signup and view all the answers

According to Petersdorf and Beeson, how is pyrexia of unknown origin (PUO) defined?

<p>Temperature greater than 38.3°C on several occasions, accompanied by more than 3 weeks of illness, and failure to reach a diagnosis after 1 week of in-patient investigation (B)</p> Signup and view all the answers

What are some common causes of fever mentioned in the text?

<p>Infections, Neoplasms, Auto-immune diseases (B)</p> Signup and view all the answers

What is the normal range for body temperature?

<p>36.5-37.4°C (A)</p> Signup and view all the answers

What are some physiological causes of fever mentioned in the text?

<p>After meals, After vigorous exercise (D)</p> Signup and view all the answers

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Study Notes

Body Temperature and Fever

  • The normal range for body temperature is not explicitly stated, but a temperature above 37.5°C is considered abnormal.

Fever Classification

  • Pyrexia is an abnormally high body temperature, ranging from 37.5°C to 38°C.
  • Hyperpyrexia refers to an extremely high body temperature, above 41.5°C.

Pyrexia of Unknown Origin (PUO)

  • According to Petersdorf and Beeson, PUO is defined as an elevation of body temperature above 38.3°C for more than three weeks with no definite diagnosis made after initial investigations.

Physiological Causes of Fever

  • Some physiological causes of fever include:
    • Infections
    • Inflammatory reactions
    • Tissue damage or necrosis
    • Immune-mediated reactions

Markers of Fever

  • The main marker associated with fever is an elevated white blood cell count (leukocytosis).

Causes of Fever

  • Some common causes of fever mentioned in the text include:
    • Infections
    • Inflammatory reactions

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