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- W2004229768 abstract "A recent article (Fisher et al. Anaesthesia 2002; 57: 253–5) describes a new method of airway management using a microlaryngeal tube during percutaneous tracheostomy. The procedure involved the existing tracheal tube being replaced with a longer 5.0-mm internal diameter microlaryngeal tube. Prior to tracheostomy, the cuff was deflated and the resulting gas leak prevented by a pharyngeal throat pack. I consider there are inherent problems with this particular technique of airway management that need to be addressed. (a) The airway pressure may increase following ventilation through a smaller microlaryngeal tube in patients with poor lung compliance, and adequate ventilation may be impossible to achieve. Mechanical ventilation via a microlaryngeal tube can lead to hypercarbia. The rise in arterial carbon dioxide may be detrimental in patients with raised intracranial pressure. (b) There have been numerous studies evaluating various airway devices including the laryngeal mask [1], the intubating laryngeal mask [2], the airway management device [3], the Combitube [4] and a microlaryngeal tube [5] being used during retrograde translaryngeal tracheostomy. None of these has achieved widespread acceptance. Major complications including loss of airway and hypoxic episodes have been reported in about 14% of patients during the process of changing the existing tracheal tube to a microlaryngeal tube during translaryngeal tracheostomy [6]. (c) Accurate needle and guidewire placement in the trachea is an important step during percutaneous tracheostomy prior to insertion of single or multiple dilators. Life-threatening complications can occur during the needle placement, dilatation and subsequent placement of a tracheostomy tube. Fibreoptic bronchoscopy is increasingly used and has been found useful to guide these steps during tracheostomy [7]. In addition, continuous endoscopic guidance has been shown to increase the safety of percutaneous tracheostomy [8]. This series reports a case of oesophageal dilatation and placement of a tracheostomy tube necessitating thoracotomy for the oesophageal repair. The use of a microlaryngeal tube during tracheostomy does not allow passage of a bronchoscope to visualise the key steps of the procedure. The oesophageal tear could have been avoided by bronchoscopy. (d) In patients with thick secretions or blood clot in the airway, it would be difficult to perform an effective suction via a microlaryngeal tube during tracheostomy. Despite the growth of multiple percutaneous techniques in recent years, there has been a decreasing trend of immediate or early complications of tracheostomy since the introduction of the Ciaglia serial dilatational technique. This may be as a result of more training and increasing use of bronchoscopy during the procedure. We believe using a bronchoscope through the existing tracheal tube should lead to a safer percutaneous tracheostomy. The use of a microlaryngeal tube prevents this option." @default.
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- W2004229768 date "2002-10-22" @default.
- W2004229768 modified "2023-09-27" @default.
- W2004229768 title "Airway management is simpler with the existing tracheal tube" @default.
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- W2004229768 doi "https://doi.org/10.1046/j.1365-2044.2002.28808.x" @default.
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