Use of pulse oximetry for monitoring tracheostomy tube obstruction.
Experimental studies were performed on dogs for monitoring postoperative tracheostomy tube obstruction using a pulse oximeter. While a 25% obstruction of the cross-sectional area of the tube did not alter the oxygen saturation, obstruction of 40% and above resulted in a drop in the oxygen saturation level which corresponded to the degree of obstruction. The greater the degree of obstruction, the sooner was the fall of oxygen saturation. Therefore a pulse oximeter could be effectively put to use to monitor tracheostomy tube obstruction.
Rao
A J
AJ
Department of Otorhinolaryngology, Nagoya University School of Medicine, Japan.
Komatsu
T
T
Kainuma
M
M
Koh
T
T
Shimada
Y
Y
Yanagita
N
N
Nakashima
T
T
D000818:Animals; D004285:Dogs; D008991:Monitoring, Physiologic; D010092:Oximetry; D011183:Postoperative Complications / Q000175:diagnosis*; D014139:Tracheostomy