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BSA Formula:
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Body Surface Area (BSA) is the calculated surface area of a human body. It is often used in medical practice to calculate drug dosages and medical indicators. The Mosteller formula is one of the commonly used methods for BSA calculation.
The calculator uses the Mosteller formula:
Where:
Explanation: The formula calculates body surface area based on the square root of the product of height and weight divided by 3600.
Details: BSA is crucial for determining appropriate drug dosages, especially for chemotherapy, renal function assessment, and other medical treatments where body size affects medication metabolism and distribution.
Tips: Enter height in centimeters and weight in kilograms. All values must be valid (height > 0, weight > 0).
Q1: Why is BSA important in medicine?
A: BSA provides a more accurate measurement for drug dosing than body weight alone, particularly for medications with narrow therapeutic windows.
Q2: What are normal BSA values?
A: Average BSA for adults is approximately 1.7 m² for men and 1.6 m² for women, but varies significantly based on height and weight.
Q3: Are there other formulas for calculating BSA?
A: Yes, other formulas include Du Bois, Haycock, and Gehan-George formulas, but Mosteller is widely used for its simplicity and accuracy.
Q4: When should BSA be used for drug dosing?
A: BSA-based dosing is commonly used for chemotherapy, some antibiotics, and other drugs where body surface area affects drug distribution and clearance.
Q5: Can BSA be used for pediatric patients?
A: Yes, BSA calculations are particularly important for pediatric drug dosing as children's metabolism and body composition differ from adults.