A local anesthetic's maximum dose is only as trustworthy as the weight you figure it on. Master Anesthesia now lets you choose that weight — ideal, lean, or actual body weight — so the ceiling reflects the patient in front of you instead of one hard-coded assumption. If you have ever wondered whether a local anesthetic dose should ride on ideal body weight, this is where you decide.
It matters most in obesity, where the three weights pull far apart. Local anesthetic settles into lean tissue, not fat, so scaling the dose to total body weight can push the “safe” number well past safe. Choose ideal or lean body weight and the ceiling drops back to the patient's real physiology.
How it works
- Adults get three bases a tap apart — ideal (IBW), lean (LBW), and actual body weight.
- Patients with obesity (BMI 30+) default to the most conservative ideal-weight ceiling, and you can override it anytime.
- Children show ideal and actual only — the lean-weight formula isn't validated in kids, so it stays hidden.
- Dose an obese patient on actual weight and a gentle caution appears, so you never inflate the ceiling by accident.
The maximum moves the instant you switch bases, so you can see exactly how much headroom obesity was quietly borrowing — and give your block with the real margin in view.