Minitracheotomy: complications and follow-up with fibreoptic tracheoscopy

An unusual complication of minitracheostomy

A 72-year-old woman had a minitracheostomy inserted for sputum retention. This was undertaken by a relatively junior resident who opted to use an early model minitracheostomy kit Minitrach II. The following day the patients condition deteriorated and intubation was warranted, at which time it was apparent to senior staff that the minitracheostomy had been malpositioned. Ten days later, formal tracheostomy was performed under general anaesthesia. After incision, an abscess in the thyroid gland was found. Histology subsequently revealed a Hurthle cell tumour of the thyroid. Thyroid abscess is exceedingly rare. It typically occurs in abnormal thyroid tissue and with a focus on infection. The combination of Hurthle cell adenoma and a foreign body (the minitracheostomy) was evidently causative in this instance. This complication of minitracheostomy insertion has not to our knowledge, previously been reported.

Management of upper airway obstruction using a Seldinger minitracheotomy kit

Two adult patients with upper airway obstruction due to epiglottitis and infectious mononucleosis requiring urgent airway management are presented. Successful establishment of an open airway was achieved by performing a minitracheotomy using the Seldinger technique followed finally with nasotracheal fibreoptic intubation.

Percutaneous subcricoid minitracheostomy: report of 50 procedures

A minitracheostomy is a small cannula in the trachea that allows permanent access to the tracheal lumen and that is used for the evacuation of bronchial secretions. It generally is performed through the cricothyroid membrane. We used a Seldinger technique in 50 patients to insert a minitracheostomy cannula in the subcricoid position. This technique proved to be easy to perform in translaryngeally intubated patients, both under local anesthesia and under general anesthesia. Operative complications occurred in 5 patients (10%), all of which were minor. The pros and cons of a minitracheostomy in the subcricoid position are discussed.

Insertion forces and risk of complications during cricothyroid cannulation

Our purpose was to determine the forces required to insert several different styles of cricothyroid cannulas and to relate the magnitude of these forces and cannula design features to the incidence of complications during insertion. Tests were done on unembalmed cadavers and anesthetized dogs. Samples of 4 different commercial cricothyroid cannulas were tested. Each cannula type was tested in 5 different cadavers and 10 different dogs. A lubricant was applied to the cannulas in half of the dogs tested. Major findings are 1) there is a linear correlation between insertion force and device diameter, 2) higher puncture force is associated with a greater incidence of complications, 3) posterior wall penetration occurs more frequently with a curved penetrating device, 4) using small pilot needles to guide insertion of large cannulas minimizes complications, and 5) lubricant is less effective for cannulas having abrupt diameter changes. These findings provide guidelines for design of safer cricothyroid cannulas.

Minitracheotomy: a new interventional technique for treatment of sputum retention

Sputum retention causing pulmonary atelectasis, secondary pneumonia, and respiratory failure is a frequent complication particularly in patients recovering from abdominal and thoracic surgery. Physiotherapy and conventional therapeutic means like blind tracheobronchial and bronchoscopic suction applied to prevent and treat postoperative respiratory complications have been shown to not be completely effective. Minitracheotomy is a new alternative method for the treatment of sputum retention. Endobronchial suction can be performed as often as required, using a thin uncuffed tube (ID 4.5 mm) which is inserted into the trachea through the cricothyroid membrane under local anaesthesia. Since respiration occurs normally through the nose, mouth, and larynx these patients retain speech and the ability to cough. Complications are rare. Endobronchial suction via minitracheotomy is minimally invasive, more comfortable, and at least as effective as conventional bronchoscopic suction. It therefore has become a routine method used in the treatment of postoperative sputum retention in high-risk patients in many intensive-care units.