Dengue with Warning Signs: When Initial Fluid Resuscitation Does Not Restore Perfusion

In dengue patients classified as moderately ill with warning signs — or those in a special, high-risk group — initial fluid management may not achieve the expected clinical recovery. This protocol addresses the escalation step for patients whose systolic pressure remains maintained but who continue to show signs of reduced perfusion and a raised haematocrit after fluid boluses.

Clinical Scenario

Dengue with warning signs, or a special/high-risk population (comorbidity), presenting with systolic pressure maintained alongside clinical signs of reduced perfusion and raised haematocrit (Group B — moderately ill). This group includes all special populations and those with dengue warning signs.

Prior Treatment Step — Goals Not Achieved

The preceding management step used intravenous fluid boluses: crystalloid or colloid for a rising or high haematocrit (suspected ongoing capillary leakage), or blood transfusion and packed red blood cells when significant bleeding was suspected. The targets for that step were: improvement in blood pressure and pulse pressure, a decreasing haematocrit, adequate urine output, and improved capillary refilling.

This protocol is indicated when those targets have not been met after the second fluid bolus, and refractory hypotension persists.

Escalation Approach

When refractory hypotension remains after a second bolus, the structured protocol involves consideration of a specific class of circulatory support agents — alongside a detailed investigative workup to identify and exclude alternative shock mechanisms — before the full management algorithm is applied.

References

  • The dengue patients with warning signs and high-risk groups are considered to be as moderately ill and classified as Group B.
  • Includes dengue with warning signs or all special populations.
  • Grade B with warning signs in adults (systolic pressure maintained + signs of reduced perfusion), HCT high.
  • Refractory hypotension, consider inotropes after 2nd bolus.
  • Detailed investigation to rule out: 1. cardiogenic shock; 2. septic shock; 3. metabolic cause; 4. organ dysfunction.
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