CLINICAL SCENARIO 2 6-year-old girl, chief complaint: Fatigue + cold hands, History: Day 1-4: Continuous high fever, yesterday: vomiting + abdominal pain. This morning: Marked fatigue, cold hands noted by the mother, brought to hospital - On admission: T: 37.8°C, HR: 132 bpm, BP: 80/60 mmHg, RR: 28 bpm, SpO2: 91%, weight: 20 kg, general condition: very fatigued, cyanosis: under the tongue, skin: petechiae Questions: What life-threatening signs are present? How should the child be assessed and resuscitated? Diagnosis? What is the emergency management? Make it like a scenario we have group 3 members
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"dengue shock syndrome" AND children
Case Conference — Group 3: Pediatric Emergency Case Discussion
Case: 6-year-old girl, fatigue + cold hands, Day 5 of illness (4 days high fever, then vomiting/abdominal pain, now hypotension-range signs)
🧑⚕️ Member 1 — "What are the danger signs?"
Going through the vitals and exam findings one by one, these are all red flags:
| Finding | Why it's dangerous |
|---|---|
| BP 80/60 (pulse pressure = 20 mmHg) | A narrow pulse pressure (<20 mmHg or ≤20) is the earliest and most reliable sign of compensated shock in children — systolic BP is often preserved until late, so a "normal-looking" BP is deceptive here |
| HR 132 bpm | Tachycardia out of proportion to fever (T only 37.8°C) = compensatory response to falling stroke volume |
| Cold hands | Peripheral vasoconstriction — classic sign of poor peripheral perfusion / compensated shock |
| SpO2 91% + RR 28 | Hypoxia with tachypnea — could reflect poor perfusion, effusions/ascites (capillary leak), or impending respiratory failure |
| Cyanosis under the tongue | Central cyanosis — much more ominous than peripheral cyanosis; implies significant hypoxemia |
| Petechiae | Hemorrhagic manifestation — suggests thrombocytopenia/coagulopathy |
| Marked lethargy/fatigue | Sign of cerebral hypoperfusion — a decompensation warning |
| History pattern: 4 days continuous fever → defervescence → vomiting/abdominal pain → shock signs | This is the textbook "critical phase" transition described for severe dengue: shock classically develops around defervescence (day 3-7), heralded by vomiting, abdominal pain, lethargy, and cold extremities |
Bottom line: this child is in shock — most likely compensated shock progressing toward decompensation — and needs resuscitation now, not after more tests.
🧑⚕️ Member 2 — "How do we assess and resuscitate her?"
Using the ABCDE approach, adapted for pediatric shock:
A — Airway: Check patency; she's conscious enough to be assessed but is "very fatigued" — watch closely for airway-protective reflexes if she deteriorates.
B — Breathing: RR 28, SpO2 91%. Give high-flow oxygen immediately (face mask/non-rebreather). Reassess SpO2 after O2. Listen for pleural effusion (dullness at bases — common with capillary leak in DSS).
C — Circulation (the priority):
- Get two IV lines immediately (may be difficult — peripheral veins are constricted; consider intraosseous if access fails within 2-3 attempts)
- Check capillary refill time (likely prolonged >2 sec given cold hands), pulse volume, skin mottling
- Draw blood for: hematocrit (key trending marker), platelet count, blood glucose, electrolytes, coagulation profile (PT/aPTT/fibrinogen), liver enzymes, group & cross-match
- Start IV isotonic crystalloid bolus 10-20 mL/kg over 15-30 min (Ringer's lactate or normal saline) — for this 20 kg child that is 200-400 mL
- Reassess vitals, capillary refill, and urine output after every bolus
D — Disability: Check GCS/AVPU and bedside blood glucose — hypoglycemia can mimic or worsen shock and is easily corrected.
E — Exposure: Look for the full extent of petechiae/purpura, bleeding sites (gums, epistaxis, GI), abdominal distension/tenderness (hepatomegaly, ascites), and monitor temperature.
Continuous monitoring: vitals every 15-30 minutes until stable, strict input/output charting, urinary catheter, cardiac/pulse-oximetry monitor, and early PICU involvement.
🧑⚕️ Member 3 — "Diagnosis and emergency management?"
Most likely diagnosis: Dengue Shock Syndrome (Severe Dengue with shock)
The pattern fits perfectly:
- Classic biphasic course: febrile phase (days 1-4) → critical phase at defervescence with warning signs (vomiting, abdominal pain) → shock (narrow pulse pressure, tachycardia, cold extremities, lethargy)
- Petechiae = plasma leakage/hemorrhagic manifestation of severe dengue
- Hypoxia and central cyanosis suggest capillary leak with possible pleural effusion/ascites and impending decompensation
(Reference: WHO/national dengue guidelines describe this exact evolution — "Guidelines for Clinical Management of Dengue Fever, Dengue Haemorrhagic Fever and Dengue Shock Syndrome" — cited in Park's Textbook of Preventive and Social Medicine.)
Differentials to keep in mind while treating: septic/bacterial shock (meningococcemia can also present with petechiae + shock — check for meningeal signs and start empiric antibiotics if any doubt), severe malaria, leptospirosis, other viral hemorrhagic fevers — but the exact fever-then-defervescence-then-shock timeline strongly favors DSS.
Emergency Management (WHO Group C — Severe Dengue with Shock)
- Oxygen + IV access x2, cardiac monitor
- Immediate crystalloid bolus: 20 mL/kg over 15 min (Ringer's lactate/NS) → 400 mL for this child, since BP is still measurable (compensated shock stage)
- Reassess after each bolus (HR, pulse pressure, CRT, urine output, hematocrit)
- Improving → reduce rate stepwise (10 → 7 → 5 → 3 mL/kg/hr), taper over 24-48h
- Not improving → repeat crystalloid bolus 10-20 mL/kg once more
- If still in shock after 2 crystalloid boluses (refractory/decompensated shock) → switch to colloid (e.g., dextran or albumin) 10-15 mL/kg over 1 hour, and check hematocrit
- Rising hematocrit with persistent shock = ongoing plasma leakage → continue fluid resuscitation
- Falling hematocrit with worsening shock = suspect occult hemorrhage → transfuse packed red cells
- Correct hypoglycemia and metabolic acidosis if present
- Blood products (platelets/FFP) only for significant active bleeding, not for prophylactic correction of thrombocytopenia alone
- Avoid: IM injections, NSAIDs/aspirin (bleeding risk), and fluid overload (watch for worsening effusions, respiratory distress once shock is corrected)
- Admit to PICU, strict fluid balance, monitor for the well-known danger of fluid overload once capillary leak resolves (usually 24-48h later)
One-line answers for the report:
- Danger signs: narrow pulse pressure, tachycardia, cold peripheries, central cyanosis, hypoxia, lethargy, petechiae — all consistent with dengue shock at defervescence.
- Assessment/resuscitation: ABCDE, IV access, isotonic crystalloid bolus 20 mL/kg/15min, reassess and titrate, monitor hematocrit and urine output.
- Diagnosis: Dengue Shock Syndrome (Severe Dengue). Management: WHO Group C fluid resuscitation protocol as above, escalate to colloid/blood products if refractory, PICU admission.
Note on recent evidence: A 2024 systematic review/meta-analysis (PMID: 39024894) looked at acute liver failure as a complication of severe dengue infection — relevant because this child already has abdominal pain/vomiting, and hepatic involvement should be screened for (LFTs) as part of the workup, since it can complicate fluid and coagulation management. No findings from that review contradict the standard WHO fluid-resuscitation approach above.
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