Anesthesia Machine & Anesthesia Workstation
Welcome to the nerve center of the operating room. The anesthesia workstation, with its complex array of dials, circuits, and monitors, can seem like an intimidating beast. But what if you could master it? This comprehensive resource is your guide on a fascinating journey—from the historic, clunky elegance of the Boyle's machine to the sleek, intelligent workstations of Dräger, GE, and Mindray that define modern practice. We will demystify the physics, deconstruct the components, and build your confidence. This isn't just about learning a machine; it's about understanding your most critical partner in ensuring patient safety.
Our journey will be a methodical one. We'll start by laying a strong foundation, exploring the history and the core physics that govern every machine. From there, we'll build up your knowledge piece by piece, dissecting the classic anatomy of an anesthesia machine and mastering the circle breathing system. Only then will we leap into the modern era, comparing the sophisticated features of today's leading workstations. Each module is designed to build upon the last, transforming a daunting subject into a clear, manageable, and ultimately, masterable skill.
Conversion Tables
Anesthesia practice requires constant and precise conversion of units to ensure patient safety. Here is a comprehensive list of conversion tables and formulas routinely used by anesthesia providers.
Pulse Oximeter (SpO2)
The Ambu Bag

In every code blue, in every ambulance, and in every operating room around the world, there is one device that stands as the universal symbol of respiratory rescue: the “Ambu Bag.” It’s a simple, handheld tool that represents the difference between life and death, a direct mechanical extension of a clinician’s will to breathe for another.
Cricothyrotomy Kit
5-Lead Electrocardiogram (ECG)

While a 12-lead ECG is the gold standard for diagnosing a heart attack, the 5-lead ECG is the workhorse for continuous monitoring. It provides a dynamic, ongoing picture of the heart’s electrical activity, serving as an early warning system for a wide range of potentially life-threatening conditions.
Tracheostomy Tube & Set
Laryngeal Mask Airway (LMA)
Stylet & Gum Elastic Bougie: Essential Tools in Airway Management

In the practice of anesthesia, securing a definitive airway through endotracheal intubation is one of the most critical skills. While direct laryngoscopy is the standard technique, anesthesiologists often encounter challenging anatomies that require specialized tools. Among the most fundamental and widely used of these are the stylet and the gum elastic bougie (GEB).
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