Presenting History
In children presenting with suspected Pediatric Pulmonary Tuberculosis, systematically establish whether the presentation meets the NTEP criteria for a "Presumptive TB" case.
- Constitutional Symptoms:
- Persistent Fever: Low-to-moderate grade fever lasting $>2\text{ weeks}$. Is there a characteristic evening rise? Night sweats requiring clothing changes?
- Weight Loss / Failure to Thrive: Documented weight loss ($>5\%$ of body weight over 3 months) or flat growth curve (crossing two percentile channels downward).
- Anorexia & Decreased Playfulness: Loss of appetite, apathy, child stops playing with peers.
- Respiratory Symptoms:
- Persistent Cough: Unremitting dry or moist cough lasting $>2\text{ weeks}$, unresponsive to standard broad-spectrum oral antibiotics.
- Brassy / Paroxysmal Quality: Harsh, metallic, brassy cough suggesting tracheobronchial lymph node compression of main bronchi.
- Wheezing: Persistent unilateral monophonic wheeze unresponsive to inhaled bronchodilators.
- Index Contact Details (Epidemiological Link):
- Identify any household or close contact with an active adult pulmonary TB case within the past 24 months.
- Document contact's smear AFB status, CBNAAT result, drug-resistance pattern (drug-susceptible vs MDR/RR-TB), and treatment adherence.
- Was the child screened and offered TB Preventive Therapy (TPT) at the time of the contact's diagnosis?
Negative History (3C 1D Framework)
| Category | Pertinent Negative Question | Rationale / Significance |
|---|---|---|
| Causes / Risk Factors | Immunosuppression: No history of recent measles or varicella infection within 6 months. HIV Risk: No history of maternal HIV, blood transfusions, or prolonged steroid use. | Excludes transient secondary cell-mediated anergy. Rules out pediatric HIV co-infection (accelerates TB progression). |
| Complaints (Dissemination) | CNS Tuberculosis: No history of persistent headache, vomiting, seizures, cranial nerve palsy, or altered sensorium. Extrapulmonary Spread: No history of painless swellings in the neck/axillae, bone pain, joint swelling, limp, or back deformity. Abdominal TB: No history of abdominal distension, chronic diarrhea, or palpable abdominal lumps. | Rules out Tubercular Meningitis (TBM) and Tuberculoma. Rules out tubercular lymphadenitis, scrofuloderma, and Pott's spine. Rules out abdominal / peritoneal tuberculosis. |
| Complications | Airway Obstruction: No history of acute severe stridor, choking, or respiratory failure. Pleural Involvement: No history of acute pleuritic chest pain or sudden dyspnea. | Assesses caseous lymph node erosion into bronchi or tracheal compression. Rules out tubercular pleural effusion or pneumothorax. |
| Differentials | Foreign Body Inhalation: No history of sudden choking while eating. Asthma: No history of episodic polyphonic wheeze responsive to salbutamol. | Differentiates localized monophonic wheeze from foreign body. Differentiates tracheobronchial compression from reactive airway disease. |
Other Relevant History
- BCG Immunization History: Document BCG administration at birth; inspect for presence and size of BCG scar on left deltoid.
- Nutritional History: 24-hour recall assessing caloric and protein deficit against ideal body weight.
- Prior ATT Exposure: Detailed documentation of any previous anti-tubercular therapy (drugs, duration, adherence, outcome).
History Summary
"Master/Miss `Patient Name`, a `Age` old `male/female` child, `Birth Order` born of a `consanguineous/non-consanguineous` union from `City, State`, presented with low-grade fever with evening rise for `Duration in weeks` weeks, unremitting brassy cough for `Duration in weeks` weeks, and documented weight loss of `Percentage/kg`, with a positive history of contact with a household `smear-positive/CBNAAT-positive` adult pulmonary TB patient `Relationship`.
In view of the triad of persistent fever $>2\text{ weeks}$, unremitting cough $>2\text{ weeks}$, and failure to thrive with close adult TB contact, I would like to consider a provisional diagnosis of Presumptive Pediatric Pulmonary Tuberculosis (Primary Complex with Intrathoracic Lymphadenopathy), in a `BCG-vaccinated` child."
General & Head-to-Toe Examination
- Child Behavioral State:
- Document Prechtl state (e.g., Prechtl State 3: quiet wakefulness, cooperative, slightly lethargic/subdued).
- Vitals: Heart rate, respiratory rate, blood pressure, temperature, and room-air $SpO_2$.
- Anthropometry: Weight, height, weight-for-height Z-scores (document malnutrition staging as per WHO criteria).
- Head-to-Toe Survey:
- BCG Scar: Document presence, site, diameter (in mm), and morphology.
- Lymph Nodes: Palpate cervical, axillary, and inguinal lymph nodes (look for non-tender, firm, matted nodes $>1\text{ cm}$).
- Skin & Eyes: Look for erythema nodosum (shins), phlyctenular keratoconjunctivitis, and scrofuloderma.
Systemic Examination
Respiratory System
- Inspection: Symmetrical chest; usually deceptively minimal signs relative to extensive chest X-ray findings ("radiological-clinical dissociation").
- Palpation: Trachea midline; chest expansion symmetrical; TVF symmetrical.
- Percussion: Resonant percussion note. Look specifically for:
- D'Espine Sign: Percuss vertebral spinous processes from C7 downwards; dullness below T3/T4 indicates enlarged subcarinal / tracheobronchial lymph nodes.
- Auscultation:
- Monophonic Wheeze: Localized, fixed expiratory wheeze over one lung zone (bronchial compression by enlarged lymph node).
- Post-Tussive Crackles: Fine crepitations audible in the apical/subapical regions after coughing.
Other Systems
- Abdomen: Palpate for hepatosplenomegaly or doughy abdomen (peritoneal TB); palpate mesenteric lymph nodes.
- Central Nervous System: Assess sensorium, cranial nerves, neck stiffness, Kernig and Brudzinski signs.
- Spine & Joints: Palpate spine for localized tenderness, step-off deformity, or gibbus (Pott's spine).
Final Summary & Diagnosis
"Master/Miss `Patient Name`, a `Age` old `male/female` child, presented with fever $>2\text{ weeks}$, cough $>2\text{ weeks}$, documented weight loss, and positive household adult pulmonary TB contact.
Physical examination reveals a `Size in mm` BCG scar, moderate/severe wasting, localized monophonic wheeze and crackles over the `Right/Left Upper Zone`, with positive D'Espine sign and no peripheral lymphadenopathy.
Final Diagnosis Format:
"Pediatric Pulmonary Tuberculosis (Microbiologically Confirmed / Clinically Diagnosed), anatomically manifesting as Primary Complex with Tracheobronchial Lymphadenopathy, complicated by `Moderate/Severe Acute Malnutrition`, in a `BCG-vaccinated` child.""