Articles: intubation.
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Ugeskrift for laeger · Jan 1991
Review Comparative Study[Methods for ensuring correct tracheal intubation. A review].
To confirm correct intubation of the trachea, the literature mentions the following methods: Auscultation of thorax, the sensation of normal ventilation, gastric and thorax movement, condensation of water vapor in the tube lumen, external palpation on the patient's neck of the tube and the cuff, tactile palpation through the patient's mouth of the tube, x-ray of thorax and detection of hemoglobin oxysaturation with pulse oximetry. These methods can be used, but cannot be recommended, because they are not reliable. The following methods are recommended in the literature as reliable: Repeated laryngoscopy when there are direct visualization of the vocal cords, fiberoptic bronchoscopy, suction on the tube with a 60-ml syringe, auscultation of the upper abdomen and lungs and end-tidal carbon dioxide measurement. For the daily routine, control, of the endotracheal tube placement, by auscultation over the epigastrium, then in the right and left axilla, and continuous measurement of carbon dioxide in the expired air are recommended.
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Ann Fr Anesth Reanim · Jan 1991
Comparative Study[Comparative value of clinical signs of difficult tracheal intubation in women].
A prospective study was designed to compare the value of clinical signs aimed to predict difficult intubation in women. A group of 663 women, scheduled for elective surgery, were assessed by an anaesthetist at the preanaesthetic visit. Following parameters were assessed: the degree of mouth opening, the chin-hyoid bone and the chin-thyroid cartilage distances, dental and facial abnormalities, age, weight. ⋯ Other clinical criteria (mouth opening, the chin-hyoid bone distance) had a lower sensitivities, but seemed more specific. Multivariate analysis showed that specificity could be improved (0.84) if the distance between the upper and lower incisor teeth (mouth opening) was associated with Mallampati's rank, without any loss in sensitivity. A simple chart is proposed to assess the risk of difficult intubation.
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Detection of expired carbon dioxide is one of the most reliable methods of avoiding accidental esophageal intubation. Although capnography has become a standard monitoring technique in the hospital operating room, it is rarely available in the office setting or other arenas where emergency endotracheal intubation may be required. ⋯ This semi-quantitative detector fits between the endotracheal tube and the breathing circuit and uses a pH-sensitive indicator that changes color in response to different concentrations of carbon dioxide. Clinical studies indicate that this device provides similar results to standard capnography, and its inclusion in the emergency kit is strongly recommended.
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Case Reports Randomized Controlled Trial Clinical Trial
A management option for leaking endotracheal tube cuffs: use of lidocaine jelly.
To evaluate the effectiveness of methods for sealing a small endotracheal tube cuff perforation. ⋯ The authors' in vitro results, in conjunction with the observations from their two cases, suggest that lidocaine jelly mixed with 1 to 3 parts normal saline may be useful in managing certain types of endotracheal tube cuff incompetence.
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Case Reports
Fiber-optic bronchoscopic guidance for intubating a neonate with Pierre-Robin syndrome.
The Pierre-Robin anomalad features micrognathia, glossoptosis, and frequently a cleft palate. Tracheal intubation may be challenging and sometimes impossible. ⋯ The bronchoscope was then removed, and an endotracheal tube was threaded over the wire. The technique is safe and allows rapid endotracheal intubation in pediatric patients with difficult upper airways.