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The anaesthetic machine
Published in Daniel Cottle, Shondipon Laha, Peter Nightingale, Anaesthetics for Junior Doctors and Allied Professionals, 2018
The anaesthetic machine is a fundamental piece of equipment and it is a basic requirement that all anaesthetists understand how it works and how to check it. Anaesthetic machines should be checked at the start of every operating session, with additional checks being carried out for each new patient or in the event of any equipment changes (e.g. vaporiser change).
Safety Features of the Anaesthetic Machine
Published in Lara Wijayasiri, Kate McCombe, Paul Hatton, David Bogod, The Primary FRCA Structured Oral Examination Study Guide 1, 2017
Lara Wijayasiri, Kate McCombe, Paul Hatton, David Bogod
What are the principal functions of the anaesthetic machine?To receive compressed gases from their supplies (pipeline or cylinder)To accurately and continuously deliver a gas and volatile mixture of the desired compositionTo avoid delivering hypoxic gas mixturesTo deliver a gas mixture to the patient at a safe pressure (to avoid barotrauma)
Comparison of the supraglottic airway device BlockBusterTM and laryngeal mask airway Supreme in anaesthetised, paralyzed adult patients: a multicenter randomized controlled trial
Published in Expert Review of Medical Devices, 2022
Xue Gao, Ju-Hui Liu, Chun-Mei Chen, Yong Wang, Zhong-Yu Wang, Chun-Ling Yan, Ming-Zhang Zuo, Yu Cao, Xin Qiao, Ya-Qi Huang, Pei-Chang Liu, Hui Zhang, Jia-Qiang Zhang, Jun-Mei Shen, Chao Li, Yi Wang, Yan-Yan Sun, Jian-Nan Song, Xi-Zhe Zhang, Yun-Long Zhang, Xiao-Ting Luo, Lu-Nan Wu, Ye Zhang, Li Shi, Yuan Zhang, Fu-Shan Xue, Ming Tian
The patient head was placed at a sniffing position, and preoxygenation was performed until an end-tidal oxygen concentration of 88–90% was reached. Then, general anesthesia was induced with intravenous midazolam (0.05 mg/kg), sufentanil (0.4 μg/kg), propofol (2 mg/kg), and neuromuscular blockade was provided with intravenous rocuronium 0.6 mg/kg. Three minutes after intravenous rocuronium, an assistant performed the jaw thrust and opened the mouth with both hands. The SAD insertion was carried out by the experienced anesthetists, who had previously used more than 50 LMA Supreme and 50 SAD BlockBusterTM before the study. The devices were advanced into the oropharynx along the hard palate until a significant resistance was felt. After the cuffs were inflated to achieve an intracuff pressure of 40 cmH2O using a pressure gauge (VBM, Medizintechnik GmbH, Germany), the device was connected to the breathing system of an anesthetic machine for mechanical ventilation. General anesthesia was maintained with intravenous infusion of propofol (6–8 mg/kg/h) and remifentanil (0.1–0.2 μg/kg/min). As needed, rocuronium was intravenously administered during surgery.
Dexmedetomidine infusion during caesarean section under general anaesthesia: Evaluation of maternal awareness using BIS, maternal and neonatal outcomes
Published in Egyptian Journal of Anaesthesia, 2018
Emad Eldeen A. Ibrahim, Mokhtar M. Amer, Mohamed E. Abuelnaga, Wafaa I. Abd-Elaal
Airway devices(laryngoscope blade 3 and 4, endotracheal tube size 6.5, bougie, stylet, laryngeal mask and Guedel oro-pharyngeal airway), syringe pump. Anesthetic machine (Avance c/s2™) with capnogragh and gas analyzer, flowmeter and monitor were checked promptly. Monitoring equipment included hemodynamic monitor (Datex-OhmedaTM) with 3leads ECG, non-invasive blood pressure and pulse oximetry and depth of anesthesia monitor (BISTM covidien). Patients were fasting for 6–8 h. Intravenous access was gained using an 18-G cannula. Monitoring equipment was attached to the patients including the BIS.
Autoinflation compared to ventilation tubes for treating chronic otitis media with effusion
Published in Acta Oto-Laryngologica, 2022
Armin B. Moniri, João Lino, Luaay Aziz, Richard M. Rosenfeld
The facemask was used to cover the nose and mouth of the child enabling performance of autoinflation by nose and/or mouth. The balloon was provided for pressure regulation, pressure reservoir and visual feedback on a correct maneuver to the child and the parent. Three different colored balloons with the respective opening pressures of approximately 20 (green), 40 (blue) and 60 (red) cm H2O were used. The balloon opening pressures were verified by an anesthetic machine (Datex Ohmeda S5 ADU), with a pressure monitoring and ventilation function, used at operating theatres.