Adjusted Body Weight Calculator

Paano gamitin ang calculator na ito

1. Ilagay ang Actual Body Weight (kg)
2. Ilagay ang Height (cm)
3. Ilagay ang Sex
4. I-click ang Kalkulahin na buton
5. Basahin ang resultang ipinapakita sa ibaba ng calculator

What is Adjusted Body Weight?

Adjusted Body Weight (AdjBW) is used in clinical pharmacokinetics when a patient's actual weight significantly exceeds their ideal body weight (IBW). Many drugs distribute into lean body mass but not equally into excess adipose tissue, making actual body weight inaccurate for dosing.

The formula: AdjBW = IBW + 0.4 × (Actual Weight − IBW)

The 0.4 correction factor reflects that excess adipose tissue does contribute somewhat (about 40%) to drug distribution volume.

Ideal Body Weight Formulas

The Devine formula (1974) is most commonly used for IBW:

• Men: IBW = 50 kg + 2.3 kg per inch over 5 feet
• Women: IBW = 45.5 kg + 2.3 kg per inch over 5 feet

Adjusted body weight is typically used when actual weight exceeds IBW by more than 20–30%. When actual weight is at or below IBW, use actual weight for dosing.

Clinical Applications

AdjBW is used for dosing of drugs that don't readily distribute into fat tissue, including:

• Aminoglycoside antibiotics (gentamicin, tobramycin)
• Some chemotherapy agents
• Low molecular weight heparins
• Certain anesthetics

Always consult clinical guidelines and a pharmacist when making dosing decisions. Different drugs may use actual weight, IBW, or AdjBW depending on their pharmacokinetic properties.

Frequently Asked Questions

Sanggunian ng Ideal na Bigat ng Katawan (Devine Formula)

IBW sa pamamagitan ng taas gamit ang Devine formula.