⚠️ Important Note First

Mefenamic Acid Dose for Fever — Pediatric

Calculation for this child (14 kg):

Oral Suspension (common formulation: 50 mg/5 mL):

• 70 mg = 7 mL per dose, three times daily

Key Points

• Age restriction: Mefenamic acid is typically approved for children ≥6 months in most formulations. A 1 year 7 month child (19 months) is within range.
• Maximum duration: Do not use for more than 3–5 days continuously.
• Give with food to reduce GI upset.
• Avoid if: known renal/hepatic impairment, dehydration, or GI issues.
• Contraindicated in known NSAID hypersensitivity.

Evidence

• A 2025 observational study (EASE-O-MAPP, PMID 41625864) used 5 mg/kg TDS in children 6 months–18 years and confirmed rapid, sustained fever reduction with good GI tolerability and no significant adverse events.
• A 2022 RCT (PMID 35967183) used 6 mg/kg/dose of mefenamic acid and found it effective but concluded that high-dose paracetamol (20 mg/kg) achieves a similar antipyretic effect — suggesting mefenamic acid could be spared for pain/inflammation rather than routine fever.

Management: Hemoptysis (Blood in Sputum) in a Post-TB Patient with Hypertension (176/90 mmHg)

Step 1 — Initial Assessment (Severity Triage)

Step 2 — Causes to Consider in a Post-TB Patient

1. Bronchiectasis (post-TB scarring) — most common cause
2. Aspergilloma (mycetoma) — Aspergillus colonization of old TB cavity — classic cause of significant hemoptysis
3. TB reactivation — must be excluded
4. Rasmussen's aneurysm — erosion of pulmonary artery into a preexisting TB cavity — rare but catastrophic
5. Post-TB bronchiectasis with bacterial superinfection
6. Lung carcinoma — TB-related scarring is a risk factor

"In patients left with a pulmonary cavity after pulmonary disease that has healed (e.g., tuberculosis)... a bout of hemoptysis is occasionally the first sign of the disease [aspergilloma]." — Fishman's Pulmonary Diseases, p. 444

Step 3 — Immediate Workup

Step 4 — Management

A. Non-Massive Hemoptysis

• Rest and cough suppression (avoid vigorous physiotherapy during bleeding episode)
• Tranexamic acid — oral 500–1000 mg TDS (antifibrinolytic; can also be inhaled); good utility for stabilizing clot
• Treat underlying infection: antibiotics if bacterial superinfection suspected
• Antifungal therapy if aspergilloma confirmed: Voriconazole or Itraconazole
• Treat active TB if reactivation confirmed (standard HRZE regimen)
• Vitamin K if prothrombin time is prolonged

B. Massive/Life-Threatening Hemoptysis

1. Position patient bleeding-side DOWN (to protect the non-bleeding lung from aspiration)
2. Supplemental high-flow oxygen
3. IV access + blood group and crossmatch
4. Intubation with large endotracheal tube (≥8.5 Fr) if airway cannot be protected
5. Emergency bronchoscopy — localize site, topical vasoconstriction (epinephrine/ice-cold saline), balloon tamponade
6. Bronchial artery embolization (BAE) — first-line definitive procedure; controls bleeding in 75–90% of cases. Most hemoptysis (including post-TB) originates from high-pressure bronchial circulation — Harrison's 22E, p. 635
7. Surgery (lobectomy/pneumonectomy) — reserved for failure of embolization or surgically resectable lesion (e.g., aspergilloma)

Step 5 — Managing the Elevated BP (176/90 mmHg)

• High blood pressure increases bleeding force from the bronchial (high-pressure) arteries
• Blood pressure reduction may reduce bleeding severity

• Beta-blockers (e.g., propranolol) — can help lower systemic BP and have some utility in reducing bronchial artery pressure during hemoptysis; also useful if HR is high
• Avoid aggressive antihypertensives that cause reflex tachycardia
• Treat the hemoptysis definitively; BP will often improve once the acute stress resolves
• If BP is persistently elevated after hemoptysis is controlled → start standard antihypertensive therapy (amlodipine, ACE inhibitor, etc.)

"Systemic blood pressure reduction with beta-blockade may have some clinical utility" in hemoptysis management. — Murray & Nadel's Respiratory Medicine

Summary Flow

Blood in sputum + Previous TB + HTN 176/90
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Assess: Massive vs Non-massive?
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Investigate: CXR → CT chest → Sputum AFB/culture/cytology → Coagulation
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Likely causes: Aspergilloma, Bronchiectasis, TB reactivation, Rasmussen's aneurysm
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Non-massive: Tranexamic acid + Treat cause (antifungal/antitubercular)
Massive: Position + O₂ + Bronchoscopy + Bronchial Artery Embolization → Surgery if refractory
        ↓
BP control: Beta-blocker preferred acutely

What You Have Right ✅

What Is Missing or Needs Attention ⚠️

1. Cough Suppression — important, often missed

• Active coughing can dislodge the clot and worsen bleeding
• Add codeine 15–30 mg oral or dextromethorphan if codeine not available
• Avoid vigorous physiotherapy tonight

2. Bed Rest + Positioning

• Patient should be at rest, lying with the affected/suspected side down if laterality is known
• Reduces gravitational spread of blood to the other lung

3. NPO / Aspiration precaution

• Light diet or clear fluids only — in case bleeding escalates overnight and bronchoscopy/procedure becomes necessary

4. Monitoring instructions — critical for overnight

• Nurse should record volume of blood expectorated per hour
• If >100–150 mL/hr or SpO₂ drops or HR/BP deteriorates → escalate immediately, do not wait till morning
• Keep IV access patent tonight

5. Tranexamic acid dose clarification

• 500 mg is fine, but standard regimen is 500–1000 mg every 8 hours (TDS)
• Single dose alone till morning is subtherapeutic — give at least 2 doses tonight (now + in 8 hours)

6. Metoprolol — check contraindications first

• Avoid if: wheeze/bronchospasm (common in post-TB patients with airway disease), HR <60, active bronchospasm
• If bronchospasm risk → prefer amlodipine 5 mg for BP instead

7. Oxygen

• If SpO₂ <94% → start supplemental O₂ (2–4 L/min nasal prongs)
• Even if currently stable, have it available at bedside

Revised Overnight Plan (Non-Massive, Vitals Stable)