Total body weight is the wrong number for most of what you give. Dose propofol or an opioid on a 140-kg actual weight and you have overshot; dose a paralytic on ideal weight and you may have undershot. The weight that is right depends on the drug, and doing that math three different ways mid-case is exactly the step that gets skipped.
The dosing weight calculator does it once. Enter the patient a single time, height and sex for an adult, age and sex for a child, and it returns ideal, lean, and adjusted body weight together on one screen, alongside BSA and BMI.
Lean body weight is the scalar that matters most. For nearly every induction agent and opioid it tracks drug clearance better than total or ideal weight, so dosing on it avoids both the underdose of ideal weight and the overdose of actual weight. Adjusted body weight (ideal + 0.4 times the excess) is there for the hydrophilic drugs and maintenance infusions that need it in obesity.
This is where it earns its keep in the obese patient. Total body weight would overshoot the ventilator and several drug doses at once, and the calculator keeps every number matched to the physiology it targets.
What's included
- Ideal, lean, and adjusted body weight from a single patient entry
- The right weight scalar flagged for the drug class you are dosing
- BSA and BMI on the same screen, no second lookup
- Adult height-based and pediatric age-based weights handled automatically
- Every weight carried straight into the calculations that depend on it