Son Doctor Medical Calculator – SonDoctor.com × Corrected QT (QTc) Calculator Adjust QT interval based on heart rate Bazett formula: QTc = QT / √RR Fridericia formula: QTc = QT / 3√RR Framingham formula: QTc = QT + 154 x (1 – RR) Hodges formula: QTc = QT + 1.75 x (HR – 60) Rautaharju formula: QTc … Read more
Medical Calculator – SonDoctor.com × ECG Heart Rate Calculator (Calculate BPM from RR Interval) Enter the number of small boxes (mm) between R waves. Heart Rate [bpm] = (Paper Speed [mm/sec] × 60) / RR Interval [mm] R-R interval (mm): Paper speed (mm/sec): How to Use the ECG Heart Rate Calculator
Medical Calculator – SonDoctor.com × Reverse Due Date Calculator (Estimates LMP & Gestational Age) Estimated Due Date (EDD): Menstrual Cycle Length (between 21–40 days): Date to Check Gestational Age:
Medical Calculator – SonDoctor.com × Due Date & Gestational Age Calculator EDD = LMP + 280 + (Cycle Length – 28) First Day of Last Menstrual Period (LMP): Menstrual Cycle Length (between 21–40 days): Date to Check Gestational Age: * The expected due date is calculated as 280 days from the LMP (+ adjustment if … Read more
Medical Calculator – SonDoctor.com × Total body water (TBW) Calculator Watson Formula: TBW(Male) = 2.447 – (0.09516 × G) + (0.1074 × H) + (0.3362 × W) TBW(Female) = -2.097 + (0.1069 × H) + (0.2466 × W) Hume-Weyers Formula: TBW(Male) = (0.194786 × W) + (0.296785 × H) – 14.012934 TBW(Female) = (0.344547 × … Read more
Medical Calculator – SonDoctor.com × Gatt (Drop Rate) Calculator (mL/hr ↔ gtt/min) mL/hr → gtt/min gtt/min → ml/hr Infusion rate to convert (mL/hr): Infusion rate to convert (gtt/min): Drop Factor (gtt/mL): * A drop factor of 20 gtt/mL means 20 drops equal 1 mL. Check the IV set packaging. Listen to Drip Rate :
Medical Calculator – SonDoctor.com × Electrolyte free water clearance (EFWC) Calculator EFWC = UV x (1-((Urine Na + Urine K) / Plasma Na)) UV : Urine flow rate (L/day) * If the 24-hour urine volume is not entered, only a POSITIVE or NEGATIVE result will be provided. Urine Na (mEq/L): Urine K (mEq/L): Plasma Na … Read more
Medical Calculator – SonDoctor.com × Free water clearance (FWC) Calculator FWC = UV x (1-(U osm / P osm)) UV : Urine flow rate (L/day) * If the 24-hour urine volume is not entered, only a POSITIVE or NEGATIVE result will be provided. Urine Osm (mOsm/kg): Plasma Osm (mOsm/kg): [Optional] 24hr Urine Volume (L/day): FWC … Read more
Medical Calculator – SonDoctor.com × Free Water Deficit Calculator in Hypernatremia Male: ((Measured Na – 140) / 140 ) × 0.6 × Weight(kg) Female: ((Measured Na – 140) / 140 ) × 0.5 × Weight(kg) Measured Serum Sodium (mmol/L) : Target Serum Sodium (mmol/L) : Body weight (kg) : Male | Female
Medical Calculator – SonDoctor.com × Infusion Rate Conversion (mcg(mg)/kg/min(hr) ↔ mL/hr) In a solution of a mg drug mixed in b mL fluid: C [mL/hr] = ((60 b)/(1000 a)) x D [mcg/kg/min] x Weight[kg] 〈 Infusion Composition 〉 Solute amount (mg) : Total fluid volume (mL) : [Optional] Drop Factor (gtt/mL) : ※ If provided, … Read more