Halls BSA Dose Calculator

Body Surface Area Formula (Haycock):

\[ BSA = 0.024265 \times W^{0.5378} \times H^{0.3964} \]

Body Surface Area (m²):

Definition: This calculator estimates Body Surface Area (BSA) using the Haycock formula for accurate medication dosing across all ages.

Purpose: It helps medical professionals determine appropriate drug dosages that are based on body surface area rather than just weight.

The calculator uses the Haycock formula:

\[ BSA = 0.024265 \times W^{0.5378} \times H^{0.3964} \]

Where:

Explanation: The Haycock formula provides more accurate BSA estimates across all ages compared to other formulas.

Details: BSA-based dosing is critical for chemotherapy, pediatric medications, and other drugs with narrow therapeutic windows.

Tips: Enter the patient's weight in kilograms and height in centimeters. Both values must be > 0.

Q1: Why use BSA instead of weight for dosing?
A: BSA correlates better with metabolic processes and drug distribution than weight alone.

Q2: How accurate is the Haycock formula?
A: The Haycock formula is among the most accurate BSA formulas, especially for pediatric patients.

Q3: When is BSA dosing most important?
A: For chemotherapy, immunosuppressants, and other drugs with significant toxicity risks.

Q4: How do I convert pounds to kilograms?
A: Divide pounds by 2.205 (1 kg = 2.205 lbs).

Q5: How do I convert inches to centimeters?
A: Multiply inches by 2.54 (1 inch = 2.54 cm).