Management of Suspected Dengue with Dehydration and Thrombocytopenia

Immediate Fluid Resuscitation

The combination of tachycardia, mild dehydration, and thrombocytopenia with minimal bleeding indicates early plasma leakage, which is the hallmark of progression to severe dengue 1
Immediate fluid resuscitation with IV isotonic fluid bolus (10-20 mL/kg; maximum 1,000 mL) should be administered to prevent progression to dengue shock syndrome 2, 1
The American College of Emergency Physicians recommends immediate fluid resuscitation with IV fluid boluses as a critical first step in managing a hemodynamically unstable patient with fever, thrombocytopenia, and hypotension 1

Administer 500-1000 mL isotonic crystalloid (normal saline or Ringer's lactate) IV bolus over 30-60 minutes 1
If vital signs stabilize, transition to maintenance IV fluids at an appropriate rate 1
If tachycardia persists or blood pressure drops, give a second fluid bolus and consider ICU admission 1

Hematocrit is the single most important parameter—a rise of >10-20% from baseline indicates significant plasma leakage 1
Monitor platelet count trends, urine output, and signs of severe bleeding or organ dysfunction 1

Never wait for diagnostic confirmation before starting fluid resuscitation in suspected dengue with warning signs 1
Avoid inadequate fluid resuscitation, which leads to persistent hypoperfusion and progression to shock 1
Do not give platelet transfusions prophylactically—they are indicated only for severe bleeding or before invasive procedures when platelets <20,000/mm³ 1