Technician Sally is about to administer an injectable anesthetic to a feline patient. She plans to intubate her patient and administer inhalant anesthetic. She will need an endotracheal tube and has several sizes to choose from. When selecting the correct size endotracheal tube (ET), which measurement on the tube should be considered when placing the endotracheal tube orally?
A)Outer Diameter (O.D.)
B)Internal Diameter (I.D.)
C)The length of the ET tube
D)A and C
E)B and C

Question

Quizplus · Accepted Answer

It is common to select endotracheal tube sizes based on the internal diameter (I.D.) as well as the length of the ET tube. The internal diameter should be sufficient to reduce resistance to ventilation while the length allows proper placement of the distal end of the ET tube to be located at the mid-cervical trachea while the proximal end of the ET tube with the breathing circuit adapter is located at the patient's incisors. A tube too short may slip out and creates excessive dead space and a tube too long may enter a bronchus creating partial inflation of the lungs and transfer of oxygen and inhalant.

Technician Sally Is About to Administer an Injectable Anesthetic to a Feline