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WorksheetsDengue Quiz
Total questions: 16
Worksheet time: 8mins
Dengue virus is transmitted by which of the following mosquito species?
Aedes aegypti
Aedes albopictus
Aedes africanus
Aedes cinereus
The usual incubation period for dengue is
4-6 hours
4-7 days
2-4 weeks
1-2 months
3 phases of dengue fever in sequence
Active -> Critical -> Recovery
Critical -> Febrile -> Recovery
Febrile -> Critical -> Recovery
Febrile -> Intensive -> Recovery
The earliest abnormality(ies) from the blood test to suspect dengue fever
Low WCC and/or platelet
Increased ALT
High WCC and/or low platelet
Hypokalemia
The following are the criteria for severe dengue
Hypovolemic shock
Severe bleeding
ALT > 1000 IU
Fever
A 27-year-old man is highly suspected to have dengue fever. However NS1, IgM and IgG were all negative at D2 of illness. Which of these are the best methods to confirm dengue infection?
Send blood culture
Repeat NS1, IgM and IgG at D5 of illness
Repeat NS1, IgM and IgG at D3 of illness
Refer to medical team
Intravenous normal saline is indicated for the following patient(s)
Poor oral intake
Increasing HCT with evidence of ongoing plasma leakage despite good oral intake
Febrile with 40 degrees
All dengue patients la, no meh?
Patients with dengue need to have their body weight adjusted (for fluid regime purpose) if the BMI
≥ 25 kg/m²
≤ 16 kg/m²
≥ 27.5 kg/m²
No need adjustment
Which fluid regime is most appropriate for patients with persistent warning signs?
Maintenance fluid 1.2cc/kg/hour
Graded bolus fluid regime
Bolus fluid of 10cc/kg
Oral fluid intake
Significant bleeding is to be considered when
Results in haemodynamic instability
Patient keeps shouting around
Hct drop despite adequate fluid replacement
Patient has persistent spiking fever
What is the role of prophylaxis platelet transfusion in dengue infection?
No role
Transfuse if platelet < 10,000
Depends on platelet availability in blood bank
Patient request
The following patient(s) with dengue fever require referral to anaest team
Mr A with acute respiratory distress
Mdm B with persistent fever > 40 degrees for 3 days
Mdm C with severe hepatitis
Mr D with significant bleeding causing haemodynamic instability
The first choice fluid for initial resuscitation in dengue shock syndrome is
Normal saline
Hartmann solution
Gelafundin
Packed cells
Patients who developed metabolic acidosis due to shock should be treated by
Urgent dialysis
IV NaHCo3
IV Furosemide
Adequate fluid replacement
Lactate clearance is calculated via (lactate initial - lactate subsequent)/lactate initial X 100% . A ______ in clearance in 2 hours time improves survival.
10%
20%
30%
40%
Common pitfall(s) in fluid therapy is/are
Excessive and prolonged fixed fluid regime
Infrequent monitoring and adjustment of infusion rate
IV fluids during reabsorption phase
