Breathing circuits, also known as anesthesia breathing circuits, are medical devices that are used to administer anesthesia gases or medications to patients during surgical procedures. They are designed to monitor the patient's breathing and remove carbon dioxide from the body, ensuring that the patient remains safe and comfortable throughout the procedure.

There are several types of breathing circuits, each with its own unique design and function. These circuits can be classified as either open or closed systems, with closed systems being more commonly used in modern anesthesia practice due to their ability to conserve anesthetic gases and reduce environmental pollution.

Breathing circuits are an essential component of safe and effective anesthesia delivery. They allow for precise control of anesthesia administration, while also ensuring patient safety through continuous monitoring of breathing and gas exchange. Whether you are a medical professional or a patient undergoing surgery, understanding the definition, use, and classification of breathing circuits is crucial to ensuring a successful and safe procedure.