22 Questions
What does the term 'apparatus dead space' refer to?
The volume within the apparatus that may contain exhaled patient gas and will be rebreathed at the beginning of a subsequent inspiratory breath
What is rebreathing in anesthetic systems?
The rebreathing of some or all of the previously exhaled gasses, including carbon dioxide and water vapor
What does the term 'circuit' refer to in breathing systems?
The apparatus that allows recirculation of medical gasses and vapors
What is the term 'breathing system' used to describe?
Both the apparatus and the mode of operation by which medical gasses and inhalational agents are delivered to the patient
Which breathing system is the oldest method using ether or chloroform?
Open system
Which Mapleson classified breathing systems are commonly used with modifications?
A, D, E, and F systems
Which properties are considered as properties of the ideal breathing system?
Simple and safe, efficient, and sturdy
What is the main function of an adjustable pressure limiting (APL) valve in breathing systems?
Allow exhaled gases and excess fresh gas flow to leave the system
Which component acts as a reservoir for gases in most breathing systems?
Reservoir bag
What do tubings connect in a breathing system?
Connect one part of a breathing system to another
Which breathing system recirculates gases with varying fresh gas flow?
Semi-closed system
Which Mapleson classified breathing systems are used more frequently in recovery periods and emergency situations?
B and C systems
What material are tubings typically made of in breathing systems?
Plastic
What is the function of an APL valve in a breathing system?
Allow exhaled gases and excess fresh gas flow to leave the system
What is a key function of an open breathing system?
To deliver oxygen
Which component of most breathing systems acts as a reservoir for gases?
Reservoir bag
Which anesthesia circuit is not suitable for use with children under 25-30 kg?
Mapleson A (Magill system)
Which anesthesia circuit is commonly used for controlled ventilation and minimizes the mixing of fresh gases and exhaled gases?
Mapleson D (Bain system)
Which anesthesia circuit is a valveless breathing system used for children up to 25-30 kg body weight and is only for spontaneous ventilation?
Mapleson E and F (T-piece system)
Which anesthesia circuit type has a fresh gas flow inlet near the APL valve but is not commonly used due to lack of advantages?
Mapleson B
Which anesthesia circuit consists of corrugated tubing, a reservoir bag, and an APL valve?
Mapleson A (Magill system)
Which anesthesia circuit type is commonly used for controlled ventilation?
Mapleson D (Bain system)
Study Notes
- The text describes various types of anesthesia circuits used for ventilation systems.
- The Magill system (Mapleson A) is a spontaneous ventilation circuit with a coaxial modification called the Lack system.
- It consists of corrugated tubing, a reservoir bag, and an APL valve.
- The system is not suitable for use with children under 25-30 kg due to increased dead space and should not be used for controlled ventilation.
- The Mapleson B and C systems type have a fresh gas flow inlet near the APL valve but are not commonly used due to lack of advantages.
- The Mapleson D, or Bain, system is a coaxial system that minimizes the mixing of fresh gases and exhaled gases.
- It is commonly used for controlled ventilation and is the most commonly used semi-closed circuit in anesthesia.
- The T-piece system (Mapleson E and F) is a valveless breathing system used for children up to 25-30 kg body weight.
- It is a pediatric circuit that is a T-piece with corrugated tubing and does not contain a breathing bag.
- It is only for spontaneous ventilation.
Test your knowledge of the apparatus and mode of operation used to deliver medical gases and inhalational agents to patients. Learn about circuits that allow the recirculation of gasses and vapors, and the concept of rebreathing in anesthetic systems.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
