A 4-year-old child became acutely ill with an increase in body temperature to 39 C, liquid stool with streaks of blood and mucus up to 5 times, single vomiting. On examination: the skin fold is straightened immediately, the eyes are not sunken. There is no thirst. The skin is pale. Lips are bright, dry. The tongue is not densely overlaid. Sigma is spasmodic, painful on palpation. A chair in the form of a "rectal spit". Urination is free, painless. In the general blood test: Hb-104g/l, Er-2.56 x1012/1, Leukocytes-10, 0x109/1, p-3%, s/1-50%, e-2%, 1-39%, m-6%, ESR-9 mm/h./Lym mon Coprogram: form-n/o, consistency-liquid, leukocytes 9-10-12, erythrocytes 5-4-6, mucus+++, 1 /g were not detected
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I now have sufficient information to provide a comprehensive analysis of this clinical case. Let me synthesize everything.
Clinical Analysis: 4-Year-Old with Acute Febrile Dysenteric Illness
Diagnosis: Acute Bacterial Dysentery (Shigellosis)
Reasoning from Clinical Features
| Feature | Significance |
|---|---|
| Fever 39°C, acute onset | Invasive bacterial infection |
| Liquid stool with blood + mucus, ×5/day | Classic dysenteric syndrome (colitis) |
| Single episode of vomiting | Common in enteric infections |
| Spasmodic, painful sigmoid colon on palpation | Colonic inflammation/spasm |
| Stool in form of "rectal spit" (скудный стул) | Pathognomonic of distal colitis — scant stool, mostly mucus/blood |
| Skin fold straightens immediately, no sunken eyes, no thirst | No significant dehydration (WHO classification: none/minimal) |
| Pale skin, bright dry lips | Mild mucosal dryness; possible mild anemia |
| Painless free urination | No UTI, adequate hydration |
The "rectal spit" (tenesmus with scant, mucus-blood stool) is a hallmark of Shigella colitis — the organism invades the colonic mucosa, causing mucosal ulceration and intense rectal spasm.
Lab Interpretation
Complete Blood Count:
| Parameter | Value | Interpretation |
|---|---|---|
| Hb 104 g/L | ↓ (norm >115 g/L in children) | Mild anemia |
| Er 2.56 × 10¹²/L | ↓ | Mild normocytic/hypochromic anemia |
| Leukocytes 10.0 × 10⁹/L | Borderline elevated | Bacterial infection |
| Band neutrophils 3% | Normal (can be up to 5%) | No pronounced left shift |
| Segmented neutrophils 51% | Normal-high | Neutrophilia |
| Eosinophils 2% | Normal | |
| Lymphocytes 39% | Normal for age | |
| Monocytes 6% | Normal | |
| ESR 9 mm/h | Low-normal | Acute phase — often paradoxically normal early in bacterial diarrhea |
The leukocytosis with neutrophilia (band 3% + segmented 51% = 54% neutrophils) supports a bacterial/invasive etiology over viral.
Coprogram (Stool Microscopy):
| Finding | Significance |
|---|---|
| Liquid consistency | Active diarrhea |
| Leukocytes 9–12/HPF | Significant — indicates mucosal invasion (inflammatory diarrhea) |
| Erythrocytes 4–6/HPF | Mucosal bleeding = colitis |
| Mucus +++ | Intense mucosal secretion |
| No parasites/ova ("1/g not detected") | Excludes parasitic etiology (e.g., Entamoeba) |
Fecal leukocytes + erythrocytes + mucus without parasites = invasive bacterial colitis. The most common cause in this age group is Shigella spp. (Shigella sonnei or Shigella flexneri).
Differential Diagnosis
| Condition | For | Against |
|---|---|---|
| Shigellosis ✓ | Rectal spit, tenesmus, fecal PMNs + RBCs, sigmoid spasm, fever | — |
| Salmonella enterocolitis | Fever, bloody stool | Less prominent tenesmus, rectal spit less typical, often watery |
| Campylobacter jejuni | Bloody stool, fever | Usually more cramping, non-specific |
| EIEC (Enteroinvasive E. coli) | Dysentery-like picture | Clinical distinction difficult without culture |
| Entamoeba histolytica | Bloody mucus stool | No parasites in coprogram; trophozoites absent |
| Ulcerative colitis (1st episode) | Bloody diarrhea, sigmoid pain | Acute febrile onset, age, epidemiology against |
Dehydration Assessment
The child has no clinically significant dehydration:
- Skin turgor normal (fold straightens immediately)
- Eyes not sunken
- No thirst
- Urination normal
→ WHO Grade: No dehydration
Management Plan
1. Rehydration
- Oral rehydration therapy (ORT) with ORS (Oral Rehydration Solution) — standard volumes based on ongoing losses
- No IV fluids required given absence of dehydration
2. Antibiotic Therapy
Shigellosis is an enteroinvasive disease — antibiotic treatment shortens clinical course, reduces duration of shedding, and is recommended in children:
| Agent | Pediatric Dose | Notes |
|---|---|---|
| Ciprofloxacin (first-line) | 15 mg/kg twice daily × 3 days PO | First-line per Harrison's (Table 172-1); resistance emerging |
| Ceftriaxone | 50 mg/kg/day × 5 days IV/IM | Preferred in children when oral route unavailable; widely used |
| Azithromycin | 20 mg/kg/day (max 500 mg) × 3 days | Useful in resistant strains |
| TMP-SMX, Ampicillin | — | No longer recommended due to widespread resistance |
Note: Antidiarrheal agents (loperamide, opioids) are contraindicated in Shigella dysentery — they worsen symptoms and can prolong illness. — Jawetz, Melnick & Adelberg's Medical Microbiology, 28th Ed.
3. Symptomatic / Supportive Care
- Antipyretics (paracetamol/ibuprofen) for fever ≥38.5°C
- Continue feeding — avoid prolonged fasting
- Monitor for complications: seizures (febrile), septicemia, toxic megacolon, HUS (rare)
4. Isolation and Hygiene
- Enteric precautions: hand hygiene, separate toilet, no school attendance until stool culture clears
- Notify household contacts
Complications to Monitor
| Complication | Notes |
|---|---|
| Febrile seizures | Especially in 6 mo–5 yr age group |
| Bacteremia/septicemia | Blood culture if deterioration |
| Hemolytic-Uremic Syndrome (HUS) | Primarily with S. dysenteriae type 1 — monitor CBC, renal function |
| Reactive (post-infectious) arthritis | Mainly after S. flexneri |
| Toxic megacolon | Rare; watch for abdominal distension |
Summary
This is a 4-year-old with acute shigellosis (bacillary dysentery), most likely caused by Shigella sonnei or S. flexneri, presenting with the classic triad of high fever, dysenteric stool ("rectal spit"), and sigmoid spasm. The coprogram confirms invasive colitis (fecal leukocytes + erythrocytes + mucus, no parasites). There is no significant dehydration. Management includes ORT and a 3–5 day course of an appropriate antibiotic (ciprofloxacin or ceftriaxone), with strict enteric precautions.
— Harrison's Principles of Internal Medicine, 22nd Ed., Table 172-1; Jawetz, Melnick & Adelberg's Medical Microbiology, 28th Ed.; Rosen's Emergency Medicine, Table 167.4
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