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An unusual cause of tracheal stenosis

Lakshmi Vas, MD^*, Savita Sanzgiri , MD DNB^*, Bharati Patil, MD^* and Vikram Sanghvi, MS

^* From the Department of Anesthetics, Bai Jerbai Wadia Hospital For Children, and
Tata Memorial Hospital for Oncology, Bombay, India.

Address Correspondence to: Dr. Lakshmi Vas, Department of Anesthetics, Bai Jerbai Wadia Hospital for Children, Acharya Donde Marg, Parel Bombay - 12, India.

Purpose: To report a large chronic tracheal foreign body, causing tracheal stenosis in an 11-yr-old girl.

Clinical Features: The history was suggestive of obstructive airways disease with secondary bronchiectasis. Physical findings were crepitations and rhonchi all over the chest. Blood gases were normal. Chest X-ray showed bronchiectasis and a ventilation perfusion scan identified a tracheo-esophageal fistula. During anesthesia to confirm this, intubation and ventilation were difficult because of tracheal stenosis. The hypoventilation resulted in severe hypercarbia and acidosis. A subsequent CT scan showed a stenosis of 2 mm diameter and 1 cm length in the middle third of trachea, bronchiectasis, and an air filled pocket between the trachea and esophagus. PFT showed a severe obstruction. Antitubercular treatment which was started on the presumptive diagnosis of tuberculous stenosis and tracheoesophageal fistula caused a delay with deterioration of patient from intermittent dyspnea to orthopnea with severe hypecarbia and acidosis. The anesthetic management of the tracheal reconstruction was difficult due to her moribund condition even after medical treatment, the short length of the trachea above the obstruction, its severity and lack of resources for alternative techniques. A large foreign body was found lying obliquely in the trachea dividing it into an anterior narrow airway mimicking a stenosed trachea , and a wider posterior blind passage.

Conclusion: The anesthetic consequences were peculiar to the unexpected etiology of the stenosis and poor general condition of the patient. Minor details like the tracheal tube bevel and ventilatory pattern became vitally important.