28 terms

Outdoor Emergency Care (5th Edition): Chapter 9

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Airway
Passageway for air to enter/exit the body
Upper airway
(Nose, mouth, pharynx, larynx)
FUNCTION:
*Conducts air to lower airway
*Protects lower airways
*Warms, filters & humidifies air
Pharynx
the membrane-lined cavity behind the nose and mouth, connecting them to the esophagus.
Nasopharynx
the upper part of the pharynx, connecting with the nasal cavity above the soft palate.
Oropharynx
central portion of the pharynx between the roof of the mouth and the upper edge of the epiglottis
Laryngopharynx
lower part of the pharynx, just below the oropharyngeal opening into the larynx and esophagus
Lower airway
trachea, bronchi, bronchioles, and aveoli (gasses travel through the structers to and from the blood)
Trachea
a large membranous tube reinforced by rings of cartilage, extending from the larynx to the bronchial tubes and conveying air to and from the lungs; the windpipe.
Bronchi
two short branches located at the lower end of the trachea that carry air into the lungs.
Alveoli
tiny sacs of lung tissue specialized for the movement of gases between air and blood
Inhalation
the act of taking in air as the diaphragm contracts and pulls downward. Creates negative internal pressure. Active process
Exhalation
The passive part of the breathing process in which the diaphragm and the intercostal muscles relax, forcing air out of the lungs.
Crossed-finger method
If mouth needs to be open
1. Cross index finger under thumb
2. Place index finger and thumb at upper and lower teeth, respectively
3. Spread the fingers apart to open mouth
Suction
negative force used to withdraw air, fluid, or secretions out of a body cavity or part
Rigid suction catheter
also known as a "tonsil tip" or Yankauer, best suited for suctioning the oral airway
Flexible suction catheter
attachment for the suction device comes in various sizes but are not usually large enough to suction vomitus or thick secretions and may kink
What to do before suction?
Pre-oxygenate, open the mouth and look to see if you can find fluid/object.
Suction time
10-15 seconds for adults/ 5-10 for children
Recovery Position, HAINES, Coma, left-lateral-recumbent
A side-lying position used to maintain a clear airway in unconscious patients without injuries who are breathing adequately.
Adjunt
Medical device used to assist OEC technician in providing care
Nasopharyngeal airway
a flexible breathing tube inserted through the patient's nostril into the pharynx to help maintain an open airway
Oropharyngeal airway
a curved device inserted through the patient's mouth into the pharynx to help maintain an open airway
SLIC & SIC
Size, Lubricate, Insert, Check the adjunct (airway device)
What to do when mouth is bleeding?
Gravity + suction
Oxygen flow rate of nasal cannula
24-44%
How to size an oropharyngeal airway
The length of the airway should approximate the distance from the corner of the mouth to the angle of the​ jaw
Most common oxygen delivery service used by OEC technicians
A nonrebreather mask
After attaching regulator to oxygen cylinder, what do you do?
Turn the valve stem on the top of the cylinder using a special oxygen wrench or key
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