Stephen Smith 4-Variable OMI Calculator Score: 0.00 Interpretation: Unlikely LAD occlusion. Formula: (1.062 × STE 60 ms) + (0.052 × QTc) − (0.151 × QRS in V2) − (0.268 × R-wave in V4) Reference: Driver BE, Khalil A, Henry T, Kazmi F, Adil A, Smith SW. A new 4-variable formula to differentiate normal variant ST […]
Read More »Opioid Equivalence Calculator Opioid Equivalence Calculator Oral Morphine Dose mg (per day) Preparations IV/IM/SC Oral Sublingual Transdermal Rectal IV/IM/SC preparations Fentanyl (0.2): µg Sufentanil (2): µg Codeine (0.25): mg Hydromorphone (15): mg Morphine (3): mg Oxycodone (3): mg Pethidine (0.4): mg Oral preparations Codeine / Dihydrocodeine [0.1–0.15] (0.13): mg Dextropropoxyphene (0.1): mg Hydrocodone (1): mg […]
Read More »Let’s start with the Adrogué–Madias (A-M) formula (1997): Na+ deficit = TBW fraction x weight x ΔNa+ Sodium Deficit Calculator Sex Male (0.6)Female (0.5) Weight: 80 kg Starting [Na+]: 110 mmol/L Target [Na+]: 115 mmol/L Sodium deficit = ksex × Wt × Δ[Na+] = 150 mmol Glucose-adjusted Sodium Calculator Glucose-adjusted Sodium Calculator Measured [Na+] 115 […]
Read More »Choose your favourite formula (60/50 is my default for adults) 60/50 Watson Hume-Weyers Mellits-Cheek (paeds) Age: 18 years Height: 90 cm Weight: 70 kg Male Female Total Body Water: 42 L Intracellular Fluid: 23.1 L Extracellular Fluid: 18.9 L – Plasma volume: 2.8 L 60/50 is from the Report on the Task Group on Reference […]
Read More »Circle Occlusion and Flow Calculator Larger tube size: 20.0 Fr (d = 6.37 mm) Smaller tube size: 10.0 Fr (d = 3.18 mm) % Occlusion of larger tube: 25.0% Residual flow capacity: 56.3% Residual CSA: 20.5 mm² (≈ 14.5 Fr) Notes: d = diameter; CSA = cross-sectional area; French (Fr) denotes circumference in mm.
Read More »Liquid Medicine Calculator Liquid Medicine Calculator Weight: 14 kg Total daily dose: 45 mg/kg 3 doses per day Medication strength: 250 mg / 5 mL (50.0 mg mL‑1) Bottle size: 100 mL Course length: 5 days Summary Dose (mg):– Dose (mL):– Days per bottle:– Bottles needed:–
Read More »Tube Thickness Calculator Diameter: 0.0 mm Gauge (G): 36.6 French (Fr): 0.3
Read More »Your patient is on High Flow oxygen via a gas blender (ie Airvo2). What wall-oxygen rate will deliver the same amount of oxygen to the patient? Oxygen Equivalence Calculator FiO₂: 21% High Flow Rate: 1 L/min Equivalent Wall Oxygen Flow Rate: 0.0 L/min Estimated maximum PEEP deliverable with closed-mouth: 1 L/min: 0.1 cmH2O Sharma S, […]
Read More »The Berggren Equation, also known as the shunt equation. Berggren Equation Shunt Fraction Calculator Units mmHg kPa PAO2 Calculator FIO2 (%) PaCO2 (mmHg) Equation: PAO2 = FIO2 × (PB − PH2O) − (PaCO2 / 0.8), with PB = 760 mmHg and PH2O = 47 mmHg Compute & Fill PAO2: – Hide CcO2 [PAO2] Calculate mmHg […]
Read More »A-a Gradient Calculator | criticalcare.info A-a Gradient Calculator PAO2 = (713 × FiO2) − (1.25 × PaCO2) A-a Gradient = PAO2 − PaO2 FiO2: 0.21 (fraction) PaCO2: 40 mm Hg PaO2: 90 mm Hg
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