On intubation for an abdominal mass, a five-week-old infant is noted to have stenosis secondary to complete tracheal rings. The stenosis is located at the thoracic inlet, 2.5 cm below the vocal cords.
Using a Fogarty balloon catheter, the diameter of both the stenotic segment and the normal trachea is measured by inflating the balloon until it just touches the tracheal wall at each position. The balloon is then deflated and removed, reinflated to the volume noted and the diameter measured.
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The length of the stenotic segment is determined by using a Fogarty balloon catheter. The balloon is passed through the stricture, inflated, and then pulled back until trapped by the stricture. The catheter is marked, and the balloon is deflated, withdrawn, and inflated again at the proximal end. The catheter is marked again, and the length of the stenotic segment is measured as the distance between the two marks.
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