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WorksheetsDengue fever
Total questions: 10
Worksheet time: 3mins
What is the incubation period for dengue fever?
2 - 4 days
4 - 7 days
7 - 10 days
10 - 14 days
When is it useful to send a dengue PCR?
Between day 1 to day 5 of illness
Between day 6 to day 7 of illness
After day 7 of illness
It is not useful
A patient presents to you with 6 days of acute febrile illness. His dengue NS1 is negative. What would you do next?
Resend dengue NS1, as you do not trust the 1st result
Send dengue IgM
Send dengue IgG
Consult Dr Foong & Dr Siti
Which of the following will not cause a false positive dengue serology result?
Malaria
Leptospirosis
Scrub typhus
Japanese encephalitis
Which weight should be used to calculate the fluid requirement in a patient with BMI of 30?
Actual body weight
Ideal body weight
Adjusted body weight
Just "agak agak" (estimate) by looking at the patient
A dengue patient in your ICU in critical phase is on 2 ml/kg/hr IV drip. His latest BP is 98/83 (MAP 88), HR is 98 bpm, CRT > 2 sec. What is your immediate next step of action for the patient?
Give 10 ml/kg/hr crystalloid for 1 hour and reassess
Give 20 ml/kg/hr colloid within 30 mins and reassess
Repeat the BP reading
Call Dr Foong / Dr Siti stat even though they are on leave
Which of the following is not a common cause of shock in dengue?
Cardiogenic shock
Liver failure
Cytokine storm
Pulmonary embolism
Which of the following is not a warning sign in dengue?
Diarrhea 3 times in the past 24 hours
Tender liver on palpation
Ascites from bedside ultrasound
Gum bleeding after brushing teeth
A dengue patient in compensated shock did not respond to 1st bolus of 10 ml/kg/hr 0.9% NaCl, with increasing HCT. What would you do next?
Give a 2nd bolus of crystalloid, but use Hartmann instead
Give a bolus of colloid
Transfuse packed cells 10 ml/kg
Call all the ICU trainees to come manage (Intensivists on long leave)
You suspect HLH in a dengue patient. What would you do next to support your diagnosis?
Refer to hematology team to save time and mental fatigue
Subscribe to UpToDate to find out diagnostic criteria for HLH
Send serum ferritin
Send procalcitonin
