Calculator

Infusion rate from a fixed hourly or per-minute dose

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Pump rate for non-weight-based infusions such as vasopressin (U/min), labetalol (mg/min) or amiodarone (mg/h).

unit/h
unit/mL

Pump rate

6.0 mL/h

Formula

dose / conc

Notes

Convert per-minute doses to per-hour first (×60). Vasopressin 0.03 U/min = 1.8 U/h; with 20 U in 50 mL (0.4 U/mL) = 4.5 mL/h.

Used in

Peri-arrest rhythms: unstable tachycardia and bradycardiaVasopressors: choice, titration and escalationRefractory shock: vasopressin, steroids and adjunctsAcute heart failure and pulmonary oedemaHypertensive emergenciesAcute aortic dissection: BP and HR targets

Calculators support, not replace, clinical judgement. Check inputs and units, and confirm doses with your unit protocol.