Dengue fever physical examination: Difference between revisions

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==Skin==
==Skin==
[[Petechiae]] may be present
[[Petechiae]] may be present.
 
<gallery>
Image:Denguerash.jpg|The above picture is a [[rash]] typically associated with Dengue fever.
</gallery>


==Mental Status==
==Mental Status==

Revision as of 19:19, 14 June 2014

Dengue Fever Microchapters

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]

Overview

The physical examination in Dengue fever should be directed to ward identifying signs that the patient has severe disease warranting admission or in-hospital observation.

Vital Signs

Tachycardia, postural hypotension, and hypotension could indicate dehydration. Patients who are triaged to home management should urinate at least every 6 hours.

The tourniquet test


Skin

Petechiae may be present.

Mental Status

Lethargy and restlessness are warning signs that the patient should be monitored.

HEENT

Mucosal bleeding is a warning signs that the patient should be monitored.

Abdomen

  • Abdominal pain or tenderness are warning signs that the patient should be monitored.
  • Liver enlargment >2 cm is a warning signs that the patient should be monitored.
  • Ascites is a warning signs that the patient should be monitored.

Extremities



• assessment of haemodynamic status (Textbox D); • checking for quiet tachypnoea/acidotic breathing/pleural effusion;



Appearance of the Patient

The diagnosis of dengue is usually made clinically. The classic picture is high fever with no localising source of infection, a petechial rash with thrombocytopenia and relative leukopenia.

There exists a WHO definition of dengue haemorrhagic fever that has been in use since 1975; all four criteria must be fulfilled:

  1. Fever
  2. Haemorrhagic tendency (positive tourniquet test, spontaneous bruising, bleeding from mucosa, gingiva, injection sites, etc.; vomiting blood, or bloody diarrhea)
  3. Thrombocytopaenia (<100,000 platelets per mm³ or estimated as less than 3 platelets per high power field)
  4. Evidence of plasma leakage (hematocrit more than 20% higher than expected, or drop in haematocrit of 20% or more from baseline following IV fluid, pleural effusion, ascites, hypoproteinaemia)

Dengue shock syndrome is defined as dengue haemorrhagic fever plus:

  • Weak rapid pulse,
  • Narrow pulse pressure (less than 20 mm Hg)

or,

  • Hypotension for age;
  • Cold, clammy skin and restlessness.

References