1. Volume 104, Issue 2, Pages 623-624 (August 1993)
Intertwining and Knotting of a Guidewire With a Central Venous Catheter 
David Olsfanger, M.B., Ch.B., Robert Jedeiken, M.B., Ch.B., Brian Fredman, M.B., Ch.B., Amos Ben-Or, M.D. 
CHEST 
Volume 104, Issue 2, Pages (August 1993)
DOI: /chest
Copyright © 1993 The American College of Chest Physicians Terms and Conditions

2. Figure 1
Initial chest radiograph showing the existing right subclavian double-lumen catheter intertwined and knotted with the newly inserted guidewire at the entrance to the right atrium.
CHEST  , DOI: ( /chest )
Copyright © 1993 The American College of Chest Physicians Terms and Conditions