Imminent upper airway obstruction due to life-threatening tracheal stenosis of any cause is a challenging situation. We present a challenging case of total thyroidectomy for a malignant, invasive, and highly vascularized thyroid carcinoma that has invaded the surrounding tissues, including the sternum and mediastinum, resulting in compression of the trachea with indentation. The patient presented with a significant symptomatic tracheal stenosis, the narrowest area of that was 4 mm. Airway management in such cases presents a particular challenge to the anesthesiologists, especially considering that the option of tracheostomy is very difficult most of the time due to the highly swollen thyroid and distorted anatomy. A meticulous history of the patient's illness had been taken, and a comprehensive preoperative evaluation was conducted, including construction of a 3D model airway, virtual endoscopy, and transnasal tracheoscopy. On the day of the surgery, the airway was managed through spontaneous respiration using intravenous anesthesia and the high-flow nasal oxygen (STRIVE-Hi) technique. It was then secured with intubation using a straw endotracheal tube (Tritube®) with an internal diameter (ID) of 2.4 mm and an outer diameter of 4.4 mm with the help of a fiberscope and D-MAC blade of a video laryngoscope. At the end of the procedure, the airway was checked with a fiber optic scope, which showed an improvement in the narrowed area. This enabled us to replace the Tritube with an adult cuffed ETT of size 6.5 mm ID, and the patient was transferred intubated to the surgical ICU. Two days later, the patient's tracheal diameter was evaluated with the help of a fiberoptic scope and extubated successfully in the operating theater.
Studies have demonstrated that poor assessment and planning contribute to airway complications and that current airway assessment strategies have a poor diagnostic accuracy in predicting difficult intubation in the general population. There is a higher risk for difficulties during airway management in patients with pathologies arising from the head and neck region and are more likely to need emergency surgical access. Therefore, thorough assessment and adequate knowledge about the various head and neck pathologies is mandatory. In this chapter, we will briefly go through the preoperative assessment and history & clinical assessment, the investigations. Also we will discuss the airway management at various pathologies involving the head and neck region whether benign/malignant pathologies, OSA (obstructive sleep apnea) and post head & neck operative airway management.
Bilateral congenital choanal atresia (CCA) in newborns carries significant morbidity and mortality. Many surgical approaches have been described for its correction but none of the approaches have proved superior in preventing postoperative granulation tissue and restenosis. Recently, topical Mitomycin C (MMC) has been used intraoperatively to prevent the formation of granulation tissue and restenosis in choanal atresia repair. We report a series of three consecutive patients who underwent bilateral CCA repair and received topical MMC intraoperatively. We have used topical MMC in CCA repair for the first time in Qatar and report the outcome of these patients. Case 1 was a preterm child (29 gestational weeks) who underwent transnasal repair. Case 2 had CHARGE association and case 3 had no other anomalies, both of whom underwent transpalatal repair. In case 1, we had used topical MMC \ during revision surgery with improved outcome. In cases 2 and 3, topical MMC was applied during primary repair and in addition both received a second application selectively at the margins of the choanae 6 weeks after stent removal. Case 3 needed further dilatation of the choanae four months after second application of topical MMC. None of our patients developed any local or systemic side effects. To our knowledge, bilateral CCA repair in a 29 weeks gestational age child has not been reported in the literature. Our study suggests that topical MMC may be a useful adjunctive therapy in choanal atresia repair.
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