This document provides an overview of quality improvement models and tools. It begins with an introduction to common quality improvement models including Plan-Do-Study-Act (PDSA), Total Quality Management, the Model for Improvement, Six Sigma, Lean, and Lean Six Sigma. It then discusses key founders and theories that helped establish the foundations of quality improvement such as Walter Shewhart, W. Edwards Deming, and Avedis Donabedian. The document focuses on explaining the PDSA model in detail and provides examples of how to apply it. It also introduces common quality improvement tools that can be used with the PDSA model including process mapping, metrics, data analysis and display. The goal of quality improvement is