All 31 subjects underwent LPSDT with the use of an air-pulse stimulator via a nasendoscope.
The nasendoscope (FNL- 10 AP; KayPENTAX; Montvale, N.
At 3 out of 7 institutions, a 00 rigid nasendoscope
was never/sporadically available; one frequently had no headlights available, and registrars had to provide their own.
Further examination can be assisted with the help of a flexible nasendoscope
passed through the lumen of the tube to assess the lower airway.
The airway requires thorough investigation with a flexible nasendoscope
and plain film x-rays can provide an initial evaluation; lateral neck views may demonstrate prevertebral soft tissue swelling and a chest x-ray can provide an estimate to degree of extension (7).
Due to availability of equipment, a nasendoscope (Olympus ENF P3, Olympus Optical, Tokyo, Japan) inserted nasally was used at one institution and a gastroscope (Evis Exera 160 series gastroscope, Olympus Optical, Tokyo, Japan) inserted orally was used at the other.
We found these images to be of significantly higher quality than those obtained using a nasendoscope.