Articles: intubation.
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Anesthesia and analgesia · Jan 1982
Comparative StudyCuffed tracheal tubes--physical and behavioral characteristics.
This study compares physical and behavioral characteristics of currently used cuffed tracheal tubes. Variability in physical and behavioral characteristics between size 8 tracheal tubes and cuffs exists: radius of tube curvature varies from 12.1 to 15.8 cm, bevel angle 39 to 56 degrees, bevel direction 73 to 107 degrees, distance from proximal end of bevel to cuff 15.4 to 24.4 mm, internal tube diameter 7.5 to 8.8 mm, wall thickness 1.14 to 2.37 mm, force to collapse 1020 to 3103 g, angle to kink 52 to 96 degrees, and indentation hardness 65.4 to 83.1. ⋯ Argyle, National Catheter, Ohio, Portex, Rusch "safety," and Shiley tracheal tubes resist collapse and kinking. Argyle, Lanz, National Catheter "hi-lo," National Catheter "intermediate hi-lo," Ohio, and Portex "profile" cuffs are thin and have diameters larger than the average male tracheal diameter.
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Ann Otolaryngol Chir Cervicofac · Jan 1982
[High frequency ventilation by the inter-cricothyroid approach during ENT endoscopy: report on 83 cases (author's transl)].
The value of high frequency ventilation employing the inter-cricothyroid approach was assessed during general anesthesia for endoscopic examination of the upper respiratory tract passages. The technique for introducing the inter-cricothyroid canula, and the ventilatory apparatus, are described, and results exposed as a function of local effects of puncture and the quality of pulmonary ventilation obtained. Advantages, and other indications for the use of this technique, are discussed.
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Ann Fr Anesth Reanim · Jan 1982
Comparative Study[Nitrous oxide and pressures exerted on the trachea by endotracheal tubes. Study on a tracheal model].
The authors studied the effects of nitrous oxide diffusion, using a tracheal model, on the pressure of several endotracheal tube cuffs. Studies carried out showed an increase in volume and pressure of the cuffs related to time exposure and nitrous oxide concentrations used. Use of a self-controlled pressure cuff or filling the cuff with inspired gas composition should be of value to counteract or to prevent the diffusion effect.