Related Experiment Video
Updated: Aug 11, 2026
08:06
Use of a Low-flow Digital Anesthesia System for Mice and Rats
Published on: September 7, 2016
Anesthesia systems. Part II: Operating principles of fundamental components
J H Cicman1, V F Skibo, J M Yoder
1Department of Education, North American Dräger, Telford, PA 18969.
Journal of Clinical Monitoring
|April 1, 1993
Summary
This article details the Dräger 19.n vaporizer, electronic anesthesia ventilator, pressure limit control, and monitoring systems in Narkomed anesthesia machines. It explains their functions and compensation mechanisms for improved anesthesia delivery.
Area of Science:
- Anesthesiology
- Biomedical Engineering
Background:
- Narkomed anesthesia systems are complex devices requiring detailed operational understanding.
- Previous research (Part I) established foundational knowledge of these systems.
Purpose of the Study:
- To elucidate the operational principles and compensation mechanisms of key components in Narkomed anesthesia systems.
- To describe the function of the Dräger 19.n vaporizer, electronic anesthesia ventilator, pressure limit control, and integrated monitoring systems.
Main Methods:
- Descriptive analysis of the functional components of Narkomed anesthesia systems.
- Explanation of the mechanical and electronic operating principles.
- Review of compensation mechanisms within the vaporizer and ventilator.
Main Results:
- Detailed functional descriptions of the Dräger 19.n vaporizer and electronic anesthesia ventilator.
- Explanation of the structure, mechanics, and pressure limiting control.
- Overview of the three integrated monitoring systems.
Conclusions:
- Understanding these components is crucial for safe and effective anesthesia delivery.
- This article provides essential technical details for clinicians and engineers operating Narkomed systems.
Related Concept Videos
01:13Local Anesthetics: Pharmacokinetics
The potency and duration of action of local anesthetics (LAs) are determined by their pharmacokinetics. Pharmacokinetics describes how LAs are absorbed, distributed, metabolized, and eliminated from the body. When administered to the vascular tissues, LAs are quickly absorbed and enter the systemic circulation, reducing their localized effects. Adding vasoconstrictors such as epinephrine to LAs reduces their absorption into the systemic circulation, making them clinically effective. The...
01:30Local Anesthetics: Clinical Application as Surface, Infiltration, and Conduction Block Anesthesia
Depending on the target organ, local anesthetics (LAs) can be administered via various routes. In surface anesthesia, LAs are applied directly to the surface of the skin or mucous membranes. It is widely used for topical skin numbing before venipuncture or minor surgical procedures. Commonly used surface local anesthetics are lidocaine or benzocaine sprays or creams. Surface anesthesia occurs within 5 minutes and lasts for about 60 minutes. One of the main disadvantages of topical anesthesia is...
01:24General Anesthesia: Overview
Anesthesia is a medical procedure that uses drugs for CNS suppression to enable painless surgeries and procedures. The selection of anesthetics is influenced by their pharmacokinetic properties, side effects, and patient characteristics. Various types of anesthesia include general, local, regional, spinal, and inhalational.
General anesthesia induces unconsciousness in the whole body, while the others target specific areas or sensations. It is administered to minimize adverse effects, maintain...
General anesthesia induces unconsciousness in the whole body, while the others target specific areas or sensations. It is administered to minimize adverse effects, maintain...
01:22Stages of General Anesthesia
Various sedation levels offer significant advantages in facilitating procedural interventions for patients undergoing medical or invasive surgical procedures. These levels span from anxiolysis to general anesthesia, providing a spectrum of sedative effects to cater to specific patient needs. Anxiolysis reduces anxiety and is achieved through minimal sedation, enabling patients to remain awake and responsive while feeling more at ease during the procedure. This level can benefit minor...
01:24Parenteral Anesthetics: Overview
Intravenous anesthetics are drugs administered parenterally to induce anesthesia or sedation. Propofol is a widely used agent formulated as a 1% emulsion in soybean oil, glycerol, and egg phosphatide. It induces rapid anesthesia primarily due to its rapid distribution from the bloodstream to target tissues and is metabolized in the liver. However, it can cause significant pain on injection and hypertriglyceridemia. Fospropofol, a water-based prodrug of propofol, lacks these adverse effects.
01:20Inhalational Anesthetics: Overview
Inhalation anesthetics are drugs that induce general anesthesia upon inhalation. They work by increasing the sensitivity of GABAA receptors or inhibiting NMDA receptors, leading to a decrease in central nervous system activity. The depth of anesthesia can be rapidly adjusted by changing the concentration of the inhaled gas. Some common examples of inhalational anesthetics include volatile liquids like isoflurane, desflurane, sevoflurane and gases like xenon and nitrous oxide. Isoflurane, a...