Critical Info for those that care
Dr Stuart McLay Coaxial Tube Occlusion Calculator Outer tube size Diameter: — mm = — Fr = — G Inner tube size Diameter: — mm = — Fr = — G % Occlusion of larger tube: — Residual flow capacity: — Residual CSA: — Linked variables (Fr = French, G = gauge): Gauge: G = 19.375 − (7.807 … 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:–
Tube Thickness Calculator Diameter: 0.0 mm Gauge (G): 36.6 French (Fr): 0.3
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 Qs/Qt = (CcO₂ − CaO₂) / (CcO₂ − CvO₂) Inputs Units mmHg kPa CcO₂ [PAO₂] Calculate mmHg CaO₂ [PaO₂] mmHg CvO₂ [ScvO₂ surrogate] mmHg Alveolar Gas Calculation (PAO₂) Assume sea-level: PB=760 mmHg (101.3 kPa), PH₂O=47 mmHg (6.3 kPa), RQ=0.8 FiO₂ (%) % PaCO₂ (mmHg) Equation PAO₂ … 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
What a stupid name. Nonetheless it’s what we’re stuck with. It is the ratio of LVOT VTI to AV VTI. Given that ALL ratios are dimensionless, you can see my chagrin. VTI LVOT / VTI AV LVOT is measured with pulse wave, to localise it to the LVOT AV VTI is measured with continuous wave, … Read more
What follows is a curated distillation of the ANZICS Statement on Death and Organ Donation. Donation after Circulatory Determination of Death (DCDD) Maastricht classification – only 3 & 4 used in Aus/NZ Category Context Warm ischaemic time Degree of control Category 1 Dead on arrival Unknown Uncontrolled Category 2 Failed resuscitation (ED or ICU) Known … Read more
Death is defined variably (or not defined at all) in jurisdictions around the world, but are mostly similar. What follows below are the two types of determination of death, as recommended in the ANZICS Statement on Death and Organ Donation Neurological Determination of Death Preconditions Clinical testing Cranial Nerves Tested (II – X) Reflex Afferent … Read more
Ok, so classically we talk about transudates vs exudates by pleural fluid analysis. I’ll reframe this (I’m sure it’s already obvious to you, but hey) as ‘how can we diagnose an exudate, and the cause’ Protein & LDH Differential Glucose pH Amylase Cholesterol