Incidence of short trachea in patients with myelomeningocele.

Short trachea, typically due to reduced tracheal cartilage ring number, produces high tracheal bifurcation which can be demonstrated in radiographs with evaluable air bronchograms. Accidental bronchial intubation with sequelae has been reported in short trachea patients who have tracheal intubation. Short trachea is associated with a number of syndromes, including DiGeorge anomaly and several types of congenital heart disease and skeletal dysplasias. Review of chest radiographs of 87 patients with myelomeningocele revealed that 31 (36%) had short tracheas. Two patients had a total of 3 episodes of bronchial intubation. This degree of association of short trachea with myelomeningocele, the frequency of myelomeningocele, and the number of surgical procedures performed on many such patients suggest that special attention to the short trachea is warranted in myelomeningocele patients because of the risk of accidental bronchial intubation and subsequent sequelae. Twelve (14%) of the myelomeningocele patients lacked radiographic evidence of the presence of twelfth ribs and 11 (13%) had hypoplasia of the twelfth ribs.