Respiratory Care Calculations

David W. Chang, EdD, RRT-NPS is Professor of Cardio respiratory Care at the University of South Alabama, Mobile, Alabama.

LISTING BY SUBJECT AREAS: FORWORD. PREFACE. ACKNOWLEDGEMENTS. REVIEW OF BASIC MATH FUNCTIONS: Review of Basic Math Functions. RESPIRATORY CARE CALCULATIONS: Airway Resistance: Estimated. Oxygen Tension Gradient. Alveolar Oxygen Tension. Anion Gap. Arterial/Alveolar Oxygen Tension Ratio. Venous Oxygen Content Difference. TAPS to BOPS. Bicarbonate Corrections for Deficit. Body Surface Area. Cardiac Index. cardiac Output: Kick"s Estimated Method. Compliance: Dynamic. Compliance Static. Compliance: Total (CT). Corrected Tidal Volume. Correction Factor. Dead space to Tidal Volume Ratio. Density of Gases. Dosage Calculation: Intravenous Solution Infusion Dosage. Dosage Calculation: Intravenous Solution Infusion Rate. Dosage Calculation: Percent Solutions. Dosage Calculation: Unit Dose. Dosage Estimation for Children: Young"s Rule. Dosage Estimation for Infants and Children: Clark"s Rule. Dosage Estimation for Infants and Children: Fried"s Rule. Elastance. Endotracheal Tube Size for Children. F1O2 from Two Gas Sources. F1O2 Needed for a Desired PaO2. F1O2 Needed for a Desired PaO2 (COPD Patients). Flow Rate in Mechanical Ventilation. Forced Vital Capacity Tracing - FEVt and FEVt %. Forced Vital Capacity Tracing - FEF 200-1200. Forced Vital Capacity Tracing - FEF 25-75%. Gas Law Equations. Gas Volume Corrections. Helium/Oxygen (He/O2) Flow Rate Conversion. Humidity Deficit. I:E Ratio. Lung Volume and Capacities. Mean Airway Pressure (MAWP). Mean Arterial Pressure (MAP). Metric Conversion- Length. Metric Conversion- Volume. Metric Conversion- Weight. Minute Ventilation During IMV. Minute Ventilation: Expired and Alveolar. Oxygen: Air (O2:Air) Entrainment Ratio. Oxygen Consumption (VO2) and Index (VO2 Index). Oxygen Content: Arterial (C2O2). Oxygen Content: End-Capillary (C2O2). Oxygen Content: Mixed Venous (C2O2). Oxygen Duration of E Cylinder. Oxygen Duration of H or K Cylinder. Oxygen Duration of Liquid System. Oxygen Extraction Ratio (O2ER). Partial Pressure of a Dry Gas. PCO2 to H2CO3. pH (Henderson-Hasselbalch). Predicted PaO2 Based on Age. Relativity Humidity. Shunt Equations: Classic Physiology. Shunt Equation: Estimated. Stroke Volume (SV) and Stroke Volume Index (SVI). Stroke Work: Left Ventricular (LVSW) and Index (LVSWI). Stroke Work: Right Ventricular (RVSW) and Index (RVSWI). Temperature Conversion (Celsius to Fahrenheit). Temperature (Celsius to Kelvin). Temperature Conversion (Fahrenheit to Celsius). Tidal Volume Based on Flow and I Time. Time Constant. Vascular Resistance: Pulmonary. Vascular Resistance: Systemic. Ventilator Rate Needed for a Desired PaCO2. Weaning Index: Rapid Shallow Breathing (RSBWI). Weaning Index: Simplified (SWI). Dalton"s Law of Partial Pressure. Fick"s Law of Diffusion. Graham"s Law of Diffusion Coefficient. Law of LaPlace. Modified Shunt Equation. Poiseuille"s Law. Reynolds" Number. BASIC STATISTICS AND EDUCATIONAL CALCULATIONS: Terminology. Measure of Central Tendency. Exercises. Test Reliability. Cut Score: Revised Nedelsky Procedure. ANSWER KEY TO SELF-ASSESSMENT QUESTIONS. SYMBOLS AND ABBREVIATIONS: Symbols and Abbreviations Commonly Used in Respiratory Physiology. UNITS OF MEASUREMENT: Pressure Conversions. French (Fr) and Millimeters (mm) Conversions. Conventional and Systems Internation Units. Conversions of Other Units of Measurement. APPENDICES: Appendix A: Partial Pressure (in mm Hg) of Gases in the Air, Alveoli, and Blood. Appendix B: PAO2 at Selected F1O2. Appendix C: Normal Electrolyte Concentrations in Plasma. Appendix D: Oxygen Transport Normal Ranges. Appendix E: Factors for Converting Gas Volumes from TAPS to BOPS. Appendix F: DuBois Body Surface Chart. Appendix G: Hemodynamic Normal Ranges. Appendix H: Periodic Chart of Elements. Appendix I: Humidity Capacity of Saturated Gas at Selected Temperatures. Appendix J: Normal Values for Lung Volumes, Capacities, and Ventilation. Appendix K: Conversion Factors for Calculating Duration of Gas Cylinders. Appendix L: Barometric Pressure at Selected Altitudes. Appendix M: Using the Logarithm Table. Bibliography. Index by Alphabetical Listing.