Articles: intubation.
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Randomized Controlled Trial Clinical Trial
Assessing the position of the tracheal tube. The reliability of different methods.
Various methods have been developed to confirm proper intubation of the trachea. This blind, randomised study evaluates some of these quantitatively and qualitatively. Forty patients had both their trachea and oesophagus intubated. ⋯ Auscultation of the lungs resulted in a wrong conclusion in 15% (6-30, 95% confidence limits) of the cases when the oesophagus was ventilated: the sounds were misinterpretated as normal breath sounds. Suction on the tubes with a 60-ml syringe was also a reliable test. Other methods assessed were observation for condensation of water vapor, and abnormal movements of the upper abdomen; these were unreliable.
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Ann Oto Rhinol Laryn · Dec 1989
Comparative Study Clinical Trial Controlled Clinical TrialProspective studies evaluating the standard endotracheal tube and a prototype endotracheal tube.
Two prospective studies were designed to evaluate laryngeal injury sustained with the standard endotracheal tube (ETT) and the relative safety of a new prototype ETT. The first study followed patients after prolonged intubation with the standard ETT. Potential patient host factors were recorded and correlated with subjective complaints and objective findings on fiberoptic laryngoscopy. ⋯ The mechanisms of TVC granulomas and immobility are probably different, as suggested by the different host factor associations and onset times. The second study compared the standard ETT with the prototype ETT in short-term intubations. The prototype ETT was associated with no complications in this setting and is considered relatively safe for further testing in the patient with prolonged intubation.
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Anesthesia and analgesia · Dec 1989
What is the safest endotracheal tube for Nd-YAG laser surgery? A comparative study.
To determine whether a safe endotracheal tube for Nd-YAG surgery could be found, an Nd-YAG laser operating at 50 W was directed at six different endotracheal tubes that had 5 L/min of oxygen flowing through them. A plain Rusch red rubber endotracheal tube, a Bivona Fome-cuff laser endotracheal tube, a stainless steel Mallinckrodt Laser-Flex endotracheal tube, and a Xomed Laser-shield endotracheal tube were all ignited and perforated by the laser within 12 s. ⋯ Red rubber endotracheal tubes wrapped with 3M No. 425 or Venture copper foil tape were unaffected by 1 min of exposure to the laser beam. They are recommended for clinical use.
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The tracheas of 420 adult patients were intubated using the tip of a lighted stylet placed inside the lumen of the tracheal tube, just proximal to the tube cuff. The maximum point of transillumination was visible just distal to the cricoid cartilage, with proper cuff positioning. The lighted stylet was also introduced into the oesophagus to see whether transoesophageal illumination could be demonstrated. ⋯ Transoesophageal illumination could not be demonstrated in any patient. The mean distance between the tip of the tracheal tube and the carina varied between 3.7 and 4 cm. Transtracheal illumination is a simple, effective and reliable method that can be used during intubation for the recognition of optimal tube placement.