Maximum AP diameter of trachea in male and female are: (A) 27 mm and 25 mm, (B) 25 mm and 23 mm, (C) 25 mm and 21 mm, (D) 20 mm and 15 mm
Answer is D. Trachea: - Trachea is a flexible tube that extends from veebral level C6 in the lower neck to veebral level T 4 / 5 in the mediastinum where it bifurcates into a right and a left main bronchus. Measurement of trachea: - Parameters Average Minimum Maximum A - P diameter (mm) Male Female Male Female Male Female 18.82 13.25 10.15 10.72 22.92 17.25 Transverse diameter 16.30 14.92 11.02 10.57 19.98 17.22