A team from London, England, assessed the effect of endoscope diameter on patient discomfort during unsedated transoral gastroscopy.
|Patients who would request sedation if endoscopy was repeated:|
6.0 mm group: 14%
9.8 mm group: 31%
A total of 322 patients attending for unsedated endoscopy were examined using an endoscope of either 6.0 mm or 9.8 mm in diameter.
The patients completed a two-part questionnaire assessing tolerance of the procedure and discomfort during it.
There was failure to complete the initial unsedated endoscopy in three of 163 patients in the 6.0 mm group and 14 of 159 in the 9.8 mm group.
Patients in the 6.0 mm group reported less discomfort both during endoscope insertion and during the remainder of the procedure.
The researchers found that 14% of patients in the 6.0 mm group indicated that they would request sedation if a further endoscopy were necessary, compared with 31% in the 9.8 mm group.
Dr H. E. Mulcahy, of St. Bartholomew's Hospital, concluded on behalf of colleagues, "Ultra-thin endoscopes may have a role in clinical practice if randomized comparative studies with standard-bore instruments confirm that they do not compromise diagnostic quality."