Concept

Laryngeal tube

The laryngeal tube (also known as the King LT) is an airway management device designed as an alternative to other airway management techniques such as mask ventilation, laryngeal mask airway, and tracheal intubation. This device can be inserted blindly through the oropharynx into the hypopharynx to create an airway during anaesthesia and cardiopulmonary resuscitation so as to enable mechanical ventilation of the lungs. Various studies have shown that insertion and use of the standard tracheal tube is easy, providing a clear airway in the majority of cases. Comparative studies indicate that the standard laryngeal tube is generally as effective as the laryngeal mask airway, while some studies indicate that the Pro-seal laryngeal mask may be more effective than the standard laryngeal tube under controlled ventilation conditions in general anaesthesia. The indications and contraindications for use of the laryngeal tube are similar to those of the laryngeal mask airway and include the use in general anaesthesia for minor surgical operations. Several studies describe the usefulness of the device in securing a difficult airway, even in cases where insertion of the laryngeal mask had failed. The double-lumen laryngeal tube-Suction II, with the possibility of placing a gastric tube, has been found to have distinct advantages over the standard laryngeal tube and has been recommended as a first-line device to secure the airway in emergency situations when direct laryngoscopy fails in neonates and infants. The laryngeal tube is also recommended for medical personnel not experienced in tracheal intubation, and as a rescue device when intubation has failed in adults. According to the manufacturer the use of Laryngeal tubes is contraindicated in people with an intact gag reflex, known oesophageal disease, and people who have ingested caustic substances. In its basic (standard) version, the laryngeal tube is made up of a tube with a larger balloon cuff in the middle (oropharyngeal cuff) and a smaller balloon cuff at the end (oesophageal cuff).

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