How do I calculate the appropriate pediatric calcium dose based on a child's weight and age?

Pediatric Calcium Dose Calculation

Bachon mein calcium ki dose unki age ke mutabiq fixed daily amounts mein di jati hai, na ke weight ke hisab se calculate ki jati hai.

Age-Based Calcium Requirements

Infants (0-12 months)

• 0-6 mahine: 200 mg/day 1
• 6-12 mahine: 260 mg/day 1

Ye amounts breast milk mein calcium content par based hain aur adequate intake ke tor par recommend ki gayi hain.

Children (>12 months)

12 mahine se zyada umr ke bachon ke liye calcium intake ki classification:

• Sufficient (kaafi): ≥500 mg/day
• Insufficient (kam): 300-500 mg/day
• Deficient (bohot kam): <300 mg/day 1

Important: 300 mg/day se kam calcium intake rickets ka risk barha deta hai, chahe vitamin D levels normal bhi hon 1.

Older Children & Adolescents (1-18 years)

Institute of Medicine (IOM) recommendations ke mutabiq:

• 1-5 saal: 800 mg/day 2
• 6-10 saal: 800-1200 mg/day 2
• 11-24 saal (adolescents): 1200-1500 mg/day 2

Parenteral (IV) Calcium Dosing

Acute Hypocalcemia Treatment

Symptomatic hypocalcemia (tetany ya convulsions) ke liye:

• Elementary calcium: 10-20 mg/kg/dose
• 10% calcium gluconate: 1-2 mL/kg/dose
• Administration: Slow IV infusion 3

Asymptomatic Hypocalcemia

• Elementary calcium replacement: 40-80 mg/kg/day 3

Neonatal Parenteral Nutrition

Preterm infants mein optimal bone mineralization ke liye calcium aur phosphorus ka molar ratio 1.3:1 hona chahiye, lekin early PN mein hypophosphatemia se bachne ke liye 0.8-1.0 ratio use kiya jata hai 4.

Key Clinical Considerations

High-Risk Screening

Ye infants 24 aur 48 hours par hypocalcemia ke liye screen hone chahiye:

• Gestational age <32 weeks ke preterm infants
• Small for gestational age infants
• Diabetic mothers ke bachhe
• Severe birth asphyxia (1-min Apgar <4) 3

Common Pitfall

Weight-based scaling adult doses se directly nahi karna chahiye - ye infants mein bohot kam dose aur neonates mein bohot zyada dose de sakta hai kyunki drug elimination pathways immature hote hain 5. Calcium ke liye age-based fixed amounts use karein.

Vitamin D Co-Administration

Calcium absorption ke liye adequate vitamin D zaruri hai:

• 0-12 mahine: 400 IU/day
• >12 mahine: 600 IU/day 1

Dietary Sources Priority

Calcium-rich foods (dairy products) preferred source hain. Supplements tab use karein jab dietary intake insufficient ho 2.

Safety Upper Limit

Total calcium intake (diet + supplements) 2000 mg/day tak generally safe hai 2.