Related Experiment Video
Updated: Jun 18, 2026

In Vitro Method to Control Concentrations of Halogenated Gases in Cultured Alveolar Epithelial Cells
Published on: October 23, 2018
Anesthetic gas concentration changes related to the temperature and humidity in high and low flow anesthesia
Mana Sezdi1, Aydin Akan, Fatih Tank
1Biomedical Engineering Institute, Bogazici University, Istanbul, TURKEY. mana@istanbul.edu.tr
Abstract:
The objective of this study, is to investigate the effects of the temperature and the humidity to the amount of anesthetic gas output from the vaporizer in both high and low flow anesthesia, and to attract attention to this relationship during the delivery of anesthesia and the calibration measurements. The performance of the anesthesia vaporizer (isoflurane and sevoflurane) was evaluated in both high and low flow anesthesia, and it was investigated whether the vaporizer supplied the preset amount of anesthetic to the patient. Then, through changing the temperature of the anesthetic device between 20 and 36 degrees C, and through changing the humidity between 20% and 42%, the changes in the gas concentration were measured. After measurements, the results were studied statically. For high and low flow anesthesia, the regression equations were obtained and it was seen that these equations were acceptable.
Related Concept Videos
Inhalational Anesthetics: Overview
Stages of General Anesthesia
Physical Principles Governing Gas Exchange
Gas Laws Governing Respiration
The behavior of gases is guided by Dalton's Law of partial pressures and Henry's Law.
Dalton's Law asserts that the total pressure exerted by...
Chemical Factors Affecting Respiration Centers
CO2 has a potent influence on respiration and is strictly regulated. Under...
Assessment of Diffusion and Perfusion
The Role of Diffusion in Respiration
Diffusion is the process by which molecules move from an area of higher concentration to an area of lower concentration. In the respiratory system, this principle...
Pressure and Volume in an Adiabatic Process

