Anaesthesia Breathing Systems
نویسنده
چکیده
Anaesthesia Breathing System (formerly known as anaesthesia Breathing Apparatus or Anaesthesia Breathing Circuit) is an interface between the anaesthetic machine and the patient. They evolved over 160 years from the open systems used by Morton to the present day closed systems using carbon dioxide absorbents. The main purpose of these systems is to deliver the required oxygen and anaesthetic gases, and maintain carbon dioxide homeostasis. In addition they help us to assess, assist, or control ventilation, and condition temperature and humidity. Present day systems are constructed to facilitate scavenging of exhaled gases as well.
منابع مشابه
Studies on continuous positive airway pressure breathing systems.
A study was undertaken to compare CPAP/IMV systems shown to be in common use in the U.K. The most frequently used system (Servo 900B) has characteristics which are likely to increase the work of breathing. Recommendations are made regarding the theoretically most acceptable systems.
متن کاملCarbon monoxide re-breathing during low-flow anaesthesia in infants and children.
BACKGROUND Carbon monoxide (CO) has been detected within anaesthesia breathing systems. One potential source in this setting is exhaled endogenous CO. We hypothesized that CO is re-breathed during low-flow anaesthesia (LFA) in infants and children. METHODS Twenty children (age 2 months-7 yr) undergoing general anaesthesia were evaluated in a prospective observation study. LFA was established ...
متن کاملNewer design, newer problems: Unusual complication with Limb-O anaesthesia circuit
Several types of breathing circuits are available in anaesthesia practice.[1] Complications have been reported with almost all the breathing circuits.[2,3] Pre-use check of anaesthesia machine and circuits is recommended to avoid these complications.[4] Latest addition to the armamentarium of breathing circuit is Limb-O circuit [Figure 1]. This circuit is a ‘“double lumen’” single-tube breathin...
متن کاملAcute effects of fentanyl on breathing pattern in anaesthetized subjects.
BACKGROUND The predominant effect of opioids on respiratory pattern during anaesthesia is an increase in the duration of expiration (an effect on 'timing'), but there may also be changes in tidal volume (an effect on 'drive'). Timing and drive are controlled by separate neuronal systems, but are infrequently considered individually. The effects of opioids on breathing are not well characterized...
متن کاملGaseous homeostasis and the circle system. Validation of a model.
The performance of a model of a subject breathing from a circle system has been examined in relation to nitrogen and helium. The ability of the model to maintain a nitrogen steady-state breathing air, the attainment of a new steady-state after perturbation of an existing nitrogen equilibrium, the washout of nitrogen from the subject model on breathing oxygen, and the estimation of functional re...
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