• A Macarone Palmieri, S Motta, D Testa, S La Marca, M Meglio, and D Gentile.
• Istituto di Anestesia e Rianimazione, Università Federico II di Napoli.
• Acta Otorhinolaryngol Ital. 1995 Oct 1; 15 (5): 361-7.

AbstractDirect microlaryngoscopy is an endoscopic technique with considerable diagnostic and surgical potentialities, which are increased when carbon-dioxide Laser is used, but often limited by the anaesthesiologic methods employed. In fact, the traditional anaesthesiologic technique, which uses small bore oral-tracheal tubes and provides good ventilation, has significant disadvantages: the tube often impedes surgical activity especially in the posterior regions of the larynx; stenoses of the larynx impede oral-thacheal intubation and thus require pre-operatory thacheotomy; administration of succinylcholine often induces diffused myalgia in the following 12-24 hours; administration of traditional narcotics always requires hospitalization. Jet-ventilation used by the Freach School as an alterative, while offering a more ample operatory space, is also accompanied by many disadvantages: vocal cords vibration; spray expulsion of smoke, blood, etc.; as with the traditional method, it cannot be employed in cases of laryngeal stenoses; succinylcholine often induces diffused myalgia; it cannot be used on out-patients. Introduction of Propofol, a new endovenous anaesthetic, the anaesthetologic pratice has permitted total endovenous anaesthesia to be achieved, in spontaneous respiration, without intubation. This method is indicated even in cases where the previously mentioned approaches are shown to be inadequate or impracticable. Narcosis with Propofol was used in 70 patients with benign laryngeal pathologies, belonging to the ASA risk classes I-II who underwent surgery via CO2 Laser during Microlaryngoscopy. The pharmacologic protocol of this narcosis require intravenous premedication with atropine and phentanyl, induction and continuation with Propofol and pharyngolaryngeal local anaesthesia with lidocaine spray. The advantages offered by this method are considerable: a completely free operative space; the possibility of being used in cases of laryngeal stenosis; a rapid return to consciousness; the absence of myalgia after surgery; the possibility of treating the disease on an out-patient basis. The absence of significant complications and the good results obtained lead us to propose this anaesthesiologic method as a valid alternative to anaesthesia by the traditional oral-tracheal intubation and to Jet ventilation.

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