How to use the oropharyngeal airway correctly?

Second: Choosing a model：

Soft Oropharyngeal tube (specification: 55~115mm)

Emergency mouth-to-mouth Oropharyngeal Tube (specification: adult 80~105mm)

Semi-rigid oropharyngeal tube (specification: 40~110mm)

Two-channel semi-rigid oropharyngeal tube (Specification: 40~100mm)

The method of measuring the length：

The length of the oropharyngeal tube is equivalent to the distance from the incisors to the earlobe or the angle of inclination of the lower jaw.

Three: The method of placement of the oropharyngeal airways

(1)Direct injection method: The curved surface of the tube is directed to the upper part of the pharynx along the lingual surface, and the root of the tongue is separated from the posterior wall of the oropharynx. The tube can also be inserted using a laryngoscope.

(2) Reverse insertion method: apply the oropharyngeal tube with the concave side up to the tongue and carefully place it into the entrance cavity. When its head end approaches the back wall of the oropharynx (it will pass through the tongue), turn it 180° so that it is concave side down, and the front end is placed behind the root of the tongue. (As shown below).

Four: The operational process:

1. Select the appropriate model.

2. Do good outreach to patients.

3. Align the headboard of the bed, help the patient to take a lying position, tilt his head back so that the three axes of the upper respiratory tract (mouth, pharynx and larynx) are as straight as possible.

4. Clean the mouth and do not allow it to enter the respiratory tract.

5. For those who are unconscious, the operator separates the teeth of the patient's upper lip from the teeth of the lower lip with the thumb and forefinger of one hand, and with the other hand introduces the oropharyngeal airway from the posterior molars, paying attention to soft and precise movements.

6. As shown in the figure below, allow the oropharyngeal duct to press down along the hard palate until the near edge reaches the lip and rotates 180 degrees.Another method is to put pressure directly on the body of the tongue with a spatula and insert it directly into the oropharyngeal airways.

7. Check if the artificial airway is free.Place your palm on the outside of the oropharyngeal airway to feel if air is coming out during exhalation.Observe the amplitude of his movement when breathing.

8. Check the condition of the oral cavity so that the tongue or lips do not end up between the teeth and the oropharyngeal tube.Finally, the flange part should be secured.