Sections View Full Chapter Figures Tables Videos Full Chapter Figures Tables Videos Supplementary Content ++ Allowable blood loss (ABL): weight (kg) × EBV × (Hinitial − Hfinal)/ Havg. ++ Total body deficit of HCO3: weight (kg) × (deviation from 24) × ECF. ++ Anion gap: Na + (Cl + HCO3). ++ Normal 8–16. ++ ++Table Graphic Jump LocationFavorite Table | Download (.pdf) | PrintPerfusion to Various Body CompartmentsCompartmentBody mass in adults (%)Cardiac output (%)Vessel-rich group (brain, heart, liver, kidneys)1075Muscles5019Fat205Vessel-poor group (bone, tendons)201 ++Table Graphic Jump LocationTable 220-1 Respiratory Formulae and EquationsView Table|Favorite Table|Download (.pdf)Table 220-1 Respiratory Formulae and EquationsFick equation: VO2 (O2 consumption) (N: 250 mL/min)CO × (CaO2 − CvO2)CO: cardiac outputCaO2: arterial oxygen contentCvO2: venous oxygen contentAlveolar gas equationPAO2 = (PB − 47)FiO2 − PaCO2/RQPB: barometric pressurePA: alveolar pressureRQ: respiratory quotient (0.8 on a typical diet)Pa: arterial pressureFiO2: fraction of inspired O2A–a gradientPAO2 − PaO2O2 content (N: 20 mL O2/dL)CaO2 = 1.39(Hb × SaO2) + (PaO2 × 0.003)CaO2: arterial oxygen contentPaO2: arterial oxygen contentHb: hemoglobinShunt fraction (N: 5%)CćO2: end capillaryO2 contentCaO2: arterial oxygen content: mixed venous oxygen contentOxygen delivery (N: 400–660 mL/min/m2)DO2 = CO × CaO2Oxygen extraction(CaO2 − C)/CaO2Bohr's equation (physiologic dead space)Normal 25–30%: mixed expired CO2CompliancePAP: peak airway pressurePplat: plateau pressureTime constant definitionTotal compliance × airway resistanceFractional SaO2SaO2: oxygen saturation of hemoglobin in the arterial bloodLaplace's lawT =PR/WT: tensionW: wall thicknessBoyle's lawPfVf =P0V0, i.e., the PV product is constantT: temperatureP: pressureV: volumeIdeal gas lawPV =nRTP: pressureV: volumen: number of moles of gasR: universal gas constant = 8.31 J/moles/kgT: temperature Adapted from Schwartz's Principles of Surgery, Table 13-3. ++Table Graphic Jump LocationFavorite Table | Download (.pdf) | PrintCardiac FormulaeParameterFormulaNormal rangeCardiac indexCO/BSA2.2–4.2 L/min/m2Stroke volume indexSV/BSA40–70 mL/beats/m2Left ventricular stroke work indexSI × 0.0136(MAP − PAOP)46–60 g m/beat/m2Right ventricular stroke work indexSI × 0.0136(PA − CVP)30–65 g m/beat/m2Stroke volumeCO × 1,000/HR40–80 mLPulmonary ... GET ACCESS TO THIS RESOURCE Sign In Username Error: Please enter User Name Password Error: Please enter Password Forgot Username? Forgot Password? Sign in via OpenAthens Sign in via Shibboleth Get Free Access Through Your Institution Contact your institution's library to ask if they subscribe to McGraw-Hill Medical Products. Access My Subscription GET ACCESS TO THIS RESOURCE Subscription Options Pay Per View Timed Access to all of AccessAnesthesiology 24 Hour $34.95 (USD) Buy Now 48 Hour $54.95 (USD) Buy Now Best Value AccessAnesthesiology Full Site: One-Year Individual Subscription $995 USD Buy Now View All Subscription Options