Respiratory Care Calculations, Fourth Edition provides a detailed coverage of the essential equations and calculations for students in the classroom and practitioners in the clinical settings. This edition continues to offer the key elements of previous editions: (1) review of basic math functions, (2) description of each variable in an equation, (3) step-by-step approach to perform calculations, (4) examples, (5) self-assessment questions, (6) basic educational statistics, and (7) references. This text ensures that students and practitioners will be able perform the calculations correctly and apply the information appropriately in patient care situations.