Dose Magnesium Sulfate 15 kg Bachche Ko Wheeze Ke Liye
15 kg ke bachche ko severe asthma exacerbation mein, jo conventional therapy se 1 ghante baad bhi respond nahi kar raha hai, intravenous magnesium sulfate ki dose 0.2 mL/kg of 50% solution hai, yaani 3 mL (1.5 g) IV infusion 20-35 minutes mein deni chahiye.
Kab Dena Hai
Magnesium sulfate sirf severe cases mein use karna chahiye 1:
- Life-threatening exacerbation mein
- Intensive conventional treatment ke 1 ghante baad bhi severe exacerbation persist kare
- Mild-moderate exacerbations mein koi fayda nahi hai
Exact Dosing Protocol
Standard Pediatric Dose
- 0.2 mL/kg of 50% MgSO4 solution IV infusion over 35 minutes 2
- 15 kg bachche ke liye: 3 mL of 50% solution (1.5 g elemental magnesium)
- Alternative dosing: 25-50 mg/kg (maximum 2 g) over 20 minutes
Preparation Aur Administration
50% solution ko dilute karna zaroori hai 3:
- 20% ya kam concentration mein dilute karke IV infusion deni chahiye
- 3 mL of 50% solution ko 5% Dextrose ya Normal Saline mein mix karein
- Rate: 150 mg/minute se zyada nahi (except severe eclampsia)
Clinical Evidence
Research clearly shows benefit in children 2:
- PEFR aur SaO2 mein 30 minutes se improvement shuru
- Clinical asthma score mein 1-2 hours mein significant improvement
- Hospitalization rates kam hote hain
- Safety profile acceptable hai
Recent systematic reviews confirm children mein adults se zyada clear benefit hai 4.
Important Caveats
Monitoring Zaroori Hai
Administration se pehle aur during infusion 3:
- Patellar reflex (knee jerk) check karein - agar absent hai toh dose mat dein
- Respiratory rate monitor karein (≥16/min honi chahiye)
- Urine output ≥100 mL/4 hours maintain karein
- Renal function assess karein
Contraindications
- Renal impairment (severe cases mein maximum 20 g/48 hours) 3
- Absent deep tendon reflexes
- Respiratory depression
Side Effects Watch For
- Flushing aur sweating (common, benign)
- Hypotension
- Respiratory depression (rare, at high levels)
- Serum magnesium >10 mEq/L pe respiratory paralysis ka risk
Concurrent Therapy
Magnesium sulfate add-on therapy hai, standard treatment continue rakhein 2:
- Oxygen
- Nebulized salbutamol/albuterol
- IV aminophylline
- Systemic corticosteroids
- Ipratropium bromide
Practical Pitfall
Sabse bada mistake: Mild-moderate exacerbations mein magnesium dena - isme koi benefit nahi hai 1. Sirf severe cases jo conventional therapy se respond nahi kar rahe, unhi mein use karein.
Dusra common error: 50% solution ko directly IV push karna - yeh dangerous hai. Hamesha dilute karke slow infusion dein 3.
Calcium gluconate injection immediately available rakhein magnesium toxicity counter karne ke liye 3.