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Adult Anaesthesia
Published in John C Watkinson, Raymond W Clarke, Louise Jayne Clark, Adam J Donne, R James A England, Hisham M Mehanna, Gerald William McGarry, Sean Carrie, Basic Sciences Endocrine Surgery Rhinology, 2018
Daphne A. Varveris, Neil G. Smart
As a result of the large distal cuff, most SAD devices do not permit a good view of structures distal to the oropharynx. Thus, for almost all periglottic, laryngeal and subglottic operations in which an unobstructed view of the relevant anatomy is required, a tracheal tube is preferred. A tracheal tube is also less likely to be dislodged by excessive movements of the head and neck.
Fiber-optic intubation
Published in Hemanshu Prabhakar, Charu Mahajan, Indu Kapoor, Essentials of Anesthesia for Neurotrauma, 2018
Prasanna Udupi Bidkar, K. Narmadhalakshmi
The glossopharyngeal nerve supplies certain areas of interest to anesthesiologists. The mucosa of the pharynx, palatine tonsil, soft palate, and posterior part of the tongue are supplied by the branches of the glossopharyngeal nerve. When the fiber-optic scope is passed through the pharynx, the gag reflex will be elicited as the scope presses the posterior part of the tongue. The glossopharyngeal nerve block will eliminate the gag reflex and allow smooth passage of the scope. This is particularly useful in spontaneously breathing awake patient with tracheal tube in situ.
Tracheostomy
Published in S Asbury, A Mishra, KM Mokbel, M Fishman Jonathan, Principles of Operative Surgery, 2017
S Asbury, A Mishra, KM Mokbel, M Fishman Jonathan
The tracheostomy is performed between the second and fourth tracheal rings, either excising a 1-cm window of the trachea or creating an inferiorly based flap (Bjork flap). The tracheal tube is inserted and secured with sutures to the peri-stomal skin.
Effects of nitrous acid exposure on baseline pulmonary resistance and Muc5ac in rats
Published in Inhalation Toxicology, 2018
Masayuki Ohyama, Ichiro Horie, Yoichiro Isohama, Kenichi Azuma, Shuichi Adachi, Chika Minejima, Norimichi Takenaka
Baseline RLung and baseline Cdyn were measured by tracheal cannulation using a PULMOS-II system (MIPS Co. Ltd., Osaka, Japan) in three consecutive days. Three rats were measured per day in each group in the order of C group, M group, and H group. The rats were anesthetized i.p. with urethane (1 g/kg, 20% w/v). The tip of the tracheal tube was inserted into the trachea through an open tracheostomy. The transpulmonary pressure was determined by monitoring the difference between pressure in the external end of the tracheal cannula and the esophageal cannula using a Statham differential transducer (DP-45; Validyne Engineering corp., Northridge, CA, USA). The intrapleural pressure was measured through a water-filled cannula that was placed in the lower third of the esophagus and connected to one port of a differential pressure transducer (DP-45; Validyne Engineering corp., Northridge, CA, USA). A Fleisch pneumotachograph and a differential transducer were used to monitor the respiratory flow rate (PULMOS-II system; MIPS Co. Ltd., Osaka, Japan). Baseline RLung and baseline Cdyn were estimated under artificial ventilation with a Shinano Respirator (Model SN-480-7; Shinano, Tokyo, Japan) at a respiration rate of 70 breaths/min and a tidal volume of 7 mL/kg (Giles et al., 1971; Filep et al., 2016). The baseline RLung and baseline Cdyn are calculated for each breath. The mean of 20 breaths for the baseline RLung and baseline Cdyn was taken for each rat. The PULMOS-II system was calibrated before and after the measurement, and the calibration error was less than 5%.
Effectiveness of C-MAC video-stylet versus C-MAC D-blade video-laryngoscope for tracheal intubation in patients with predicted difficult airway: Randomized comparative study
Published in Egyptian Journal of Anaesthesia, 2023
Yasser Mohamed Osman, Rehab Abd El-Raof Abd El-Aziz
In VS group, the anesthesiologist performed a jaw thrust with his left hand to expose the laryngeal inlet. VS preloaded with size 7.0 tracheal tube, grasped with the right hand was introduced into the center of the mouth parallel to the sagittal plane. Then the stylet was advanced slowly under vision along the palate till the uvula. The anesthesiologist then manipulated the tip of the video stylet till the opening of the glottis appeared on the monitor screen. Advancement was done until the distal tip became above the vocal cords and getting a full image of the vocal cords. Using the left hand, tracheal tube was passed carefully into the trachea till the cuff was seen crossed the vocal cord. After confirming the tracheal tube place by capnograph, the VS was removed slowly.
Partial vs full glottic view with CMACTM D blade intubation of airway with simulated cervical spine injury: a randomized controlled trial
Published in Expert Review of Medical Devices, 2023
Chao Chia Cheong, Soon Yiu Ong, Siu Min Lim, Wan Zakaria Wan A., Marzida Mansor, Sook Hui Chaw
The patient’s antihypertensive medication was managed by physician. Before induction of anesthesia, the anesthetic nurse would perform a fit test of the cervical collar (LaerdalTM Stifneck) using the finger sizing method according to the patient’s neck length [13]. The adjustment peg was matched and locked from the angle of the mandible to the trapezius. The cervical collar was then removed and reapplied after induction of anesthesia. The tracheal tube with internal diameter of 7.0 to 7.5 mm and 7.5 to 8.0 mm was used for female and male patients, respectively. The tracheal tube and malleable stylet (ShileyTM Satin Slip 14 Fr size Intubating Stylet) were lubricated and shaped following the curvature of the CMACTM D blade [14,15].