Superior chest drainage with an active tube clearance system: evaluation of a downsized chest tube.
OBJECTIVE
We developed a small-diameter (20-French [Fr]) chest drainage system that incorporates an active tube clearance (ATC) system, and we evaluated its efficacy in an acute hemothorax model.


METHODS
The ATC system includes an internal guidewire that can be advanced into the lumen of the chest tube to keep the tube from clogging. In six pigs, a 20-Fr ATC tube was placed on one side and a 32-Fr standard tube on the other, and 120 mL of fresh blood was infused into each pleural space every 15 minutes for a total of 840 mL.


RESULTS
The amount of drainage for 2 hours with a 20-Fr ATC tube was significantly greater than that with the 32-Fr standard tube (525 ± 179 mL vs 183 ± 85 mL; p = 0.0032).


CONCLUSIONS
This is the first time a smaller diameter tube has been shown to have better drainage in the setting of acute bleeding compared with larger diameter tubes.
Department of Biomedical Engineering, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio 44195, USA.
Yoko
Y
Arakawa
Akira
A
Shiose
Tohru
T
Takaseya
Hideyuki
H
Fumoto
Hyun-Il
HI
Kim
Edward M
EM
Boyle
A Marc
AM
Gillinov
Kiyotaka
K
Fukamachi
D000818:Animals; D015505:Chest Tubes; D004322:Drainage / Q000295:instrumentation*; D004867:Equipment Design; D006491:Hemothorax / Q000628:therapy*; D013552:Swine