7 mm was passed into each trachea 1 cm below the cricoid
cartilage under telescopic visualization with a 4-mm rigid telescope (Storz).
One of the cadavers exhibited injury to the cricoid
The authors describe a modified rapid sequence induction, including pharyngoscopy with a Macintosh laryngoscope, instrumentation with Magill forceps for insertion of a 14 FG gastric tube into the oesophagus, and temporary release of cricoid
and tracheal ring fractures resulting in symptomatic tracheal stenosis are complicated to treat, usually requiring resection and end-to-end anastomosis or anterior augmentation grafting using auricular or costal cartilage.
Traditional management of general anaesthesia for caesarean section focuses on rapid attainment of adequate depth of anaesthesia, with provision of cricoid
pressure and endotracheal intubation.
The cartilaginous skeleton contains the vocal cords (thyroarytenoid muscles) and comprises the thyroid, cricoid
, and arytenoid cartilages.
The entire cricoarytenoid unit had been displaced posterolaterally through an oblique fracture in the body of the cricoid
cartilage beneath the articular surface.
The authors attribute this advantage to the ability to position the tip of the bronchoscope at the level of the vocal cords, allowing for identification of the thyroid cartilage and hence "more reliable and easy definition of the cricoid
and tracheal rings".
Distortion --Voice changes --Mobile laryngeal --Subcutaneous anatomy emphysema (crepitus) --Easily palpated --Laryngeal immobility thyroid cartilage --Nonpalpable thyroid --Easily palpated cartilage cricoid
cartilage --Nonpalpable cricoid
cartilage --Thyromental distance <7 cm (<3 finger --Thyromental distance 3.
If there are 2 or more rescuers, 1 rescuer may provide pressure on the cricoid
cartilage (Sellick's manoeuvre) to prevent air entering the stomach and regurgitation of gastric contents with subsequent pulmonary aspiration.
Findings on physical examination of the head and neck were unremarkable except for the 1 x 2-cm, nontender, firm, and mobile pedunculated subcutaneous mass located in the anterior neck just left of the midline at the level of the cricoid
cartilage (figure 1).
Following pre-oxygenation for five minutes, rapid sequence induction with cricoid
pressure was performed using propofol 180 mg and suxamethonium 160 mg.