Patent ID: 9706965
Date: 2017-07-18
CPC Classifications: A61B,A61M,G06N

Claim:
1. A method for evaluating carbon dioxide (CO 2 ) in breath of a subject ventilated with High Frequency Ventilation (HFV), the method comprising: providing HFV to a subject; sampling breath from a distal area of a trachea of the subject using a double lumen endotracheal tube (ETT), wherein the double lumen endotracheal tube (ETT) comprises a main endotracheal tube and a second endotracheal tube and wherein a distal opening of the second endotracheal tube is located inside the main endotracheal tube and proximal to a distal opening of the main endotracheal tube, wherein the sampling is performed by a capnograph operably coupled to a proximal end of the second endotracheal tube; calculating average CO obtaining a raw CO