1. Controlled Suction during Flexible Fiberoptic Bronchoscopy
Daniel M. Kovnat, M.D. 
CHEST 
Volume 68, Issue 1, Pages (July 1975)
DOI: /chest
Copyright © 1975 The American College of Chest Physicians Terms and Conditions

2. Figure 1
Suction attachment shown in place on bronchoscope held as during procedure. Note ease with which third finger may be raised and lowered, respectively discontinuing and initiating suction.
CHEST  , DOI: ( /chest )
Copyright © 1975 The American College of Chest Physicians Terms and Conditions