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BASIC AIRWAY MANAGEMENT. Basic Airway Objectives. Upon completion the student will be able to: Describe the anatomy of the airway and the physiology of respiration. Explain the primary objective of airway maintenance Identify commonly neglected prehospital skills related to the airway
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Basic Airway Objectives Upon completion the student will be able to: • Describe the anatomy of the airway and the physiology of respiration. • Explain the primary objective of airway maintenance • Identify commonly neglected prehospital skills related to the airway • Describe assessment of the airway and the respiratory system • Describe the modified forms of respiration and list the factors that affect respiratory rate and depth • Discuss the methods for measuring oxygen and carbon dioxide in the blood and their prehospital use.
Basic AirwayObjectives • Define and explain the implications of partial airway obstruction with good and poor air exchange and complete airway obstruction • Describe the common causes of upper airway obstruction, including: • Tongue • Foreign body aspiration • Laryngeal spasm • Laryngeal edema • Trauma
Basic AirwayObjectives • Describe complete airway obstruction maneuvers, including: • Heimlich maneuver • Removal with Magill forceps • Describe causes of respiratory distress, including: • Upper and lower airway obstruction • Inadequate ventilation • Impairment of respiratory muscles • Explain the risk of infection associated with airway management and ventilation
Basic AirwayObjectives • Describe manual airway maneuvers including: • Head-tilt/chin-lift maneuver • Jaw-thrust maneuver • Modified jaw-thrust maneuver • Discuss the indications, contraindications, advantages, disadvantages, complications, special considerations, equipment, and techniques of the following: • Upper airway and tracheo-bronchial suctioning • Naso-gastric and oro-gastric tube insertion
Basic AirwayObjectives • Oropharyngeal and nasopharyngeal airway • Ventilating a patient by mouth-to-mouth, mouth-to-nose, mouth-to-mask, one/two/three person bag-valve mask, flow-restricted oxygen-powered ventilation device, automatic transport ventilator • Compare the ventilation techniques used for an adult patient to those used for pediatric patients, and describe special considerations in airway management and ventilation for the pediatric patient
Basic AirwayObjectives • Identify types of oxygen cylinders and pressure regulators, and explain safety considerations of oxygen storage and delivery, including steps for delivering oxygen, from a cylinder and regulator • Describe the indications, contraindications, advantages, disadvantages, complication, liter flow range, and concentration of delivered oxygen for the following supplemental oxygen delivery devices: • Nasal cannula • Simple face mask
Basic AirwayObjectives • Partial rebreather mask • Nonrebreather mask • Venturi mask • Describe the use, advantages, and disadvantages of an oxygen humidifier
ADMINISTRATION Oxygen is the most important drug that we can give a patient. Without it, the body’s cells die and thus the patient dies also. • Room air contains approximately 21-30% oxygen
ADMINISTRATION • Usually stored in steel cylinders - colored GREEN • Sizes and Capacity: * “D” 350 L * “E” 600 L * “M” 3,000 L • Pressure: 2,000-2,200 psi
ADMINISTRATION Flow Meter (Two Types) • Pressure Compensated * Small ball in a calibrated tube; affected by gravity, measures actual delivered flow; found in Units mounted on wall. • Bourdon Gauge * Not affected by gravity; records a higher reading when an obstruction blocks tubing; used on portable O2 tanks
ADMINISTRATION • Nasal Cannula: 2-6 lpm; 25-50% • Basic Mask: 6-10 lpm; 35-60% • Partial Rebreather: 10 & higher lpm; 60% • Non Rebreather: 10 & higher lpm; 60-95% • Demand Valve: 100 lpm; 100% • BVM: 0 lpm 21% 15 w/o reservoir 50% 15 w/reservoir up to 95%
MANUAL TECHNIQUES • Head Tilt/Chin Lift Opens most common cause of obstruction, the tongue
MANUAL TECHNIQUES • Modify for suspected spinal injury: 1. Tongue/jaw lift 2. Modified jaw thrust
BODY POSITION • Left or right lateral positioning of a patient aids airway maintenance by allowing fluids/vomitus to drain out • Only to be used when spinal injury is NOT suspected • If spinal injury is suspected, the patient must be secured solidly to a rigid board so that the body can be turned to the side as a total unit.
OROPHARYNGEAL AIRWAY (OP AIRWAY) • Semicircular, disposable and made of hard plastic. Guedel and Berman are the frequent types. • Guedel is tubular and has a hollow center. • Berman is solid and has channeled sides. • Displaces the tongue away from the posterior pharyngeal wall.
OP AIRWAY Even when in place, it is necessary to maintain manual positioning of the airway by a head-tilt, chin-lift or jaw-thrust maneuver. INDICATIONS • Adjunct for airway control, determines presence of gag reflex. • Unconscious/unresponsive
OP AIRWAY INDICATIONS • Remove the airway if patient regains a gag reflex • May be inserted as a bite block after successful intubation
OP AIRWAY SIZING • Hold the airway next to the side of the patient's face and measuring the length of the airway from the corner of the mouth to the tip of the earlobe, • Center of the mouth to the angle of the mandible.
INSERTION • Choose the appropriate size • Open the airway • Insert the airway: 1. Using a tongue blade. Preferred method in children. 2. Insert upside down and rotate into place. Not to be used in children.
COMPLICATIONS • With intact gag reflex could cause vomiting. • Laryngospasm • Inappropriate size: 1. To Long: may push the epiglottis closed over the glottic opening, causing complete airway obstruction 2. To Short: May be easily displaced, distal opening may become obstructed by tongue
COMPLICATIONS • May occur from insertion. Improperly placed may push the tongue back into the pharynx and cause obstruction. • Aggressive insertion may cause trauma to the upper airway and bleeding. • The lumen of the tube is not large enough to allow for suctioning. Suctioning must be performed around the tube.
NASOPHARYNGEAL AIRWAYNP AIRWAY • A curved hollow tube constructed of soft plastic or rubber with a bevel at the distal end and a flange or flare at the proximal end. • This airway is less likely to stimulate gagging and vomiting because the pliable tube moves and flexes as the patient swallows.
NP AIRWAY • It may be used in a patient who is breathing but needs assistance in maintaining a patent airway. • The distal tip sits at the posterior pharynx while the proximal flare is seated on the external nare.
NP AIRWAY • Still requires manual airway maneuvers be maintained during its use.
NP AIRWAY • Indications: 1. When OP is not able to be inserted 2. Airway of choice in spontaneously breathing, but less responsive patient needing airway control. • Sizing 1. Proximal end of the tube at the tip of the nose and the distal end at the earlobe
NP AIRWAY • Technique of Insertion * Needs to be lubricated. * Proper size * Advance with bevel toward the septum * If patient is breathing you should feel airflow when placed properly. * If you meet resistance, remove and use other nare.
NP AIRWAY • Complications * Improper size and too long could end up in the esophagus * Too short could be occluded by the tongue * Laryngospasm * Trauma
ESOPHAGEAL TRACHEAL COMBITUBE • It has a double lumen. • The two lumens are separated by a partition. • One tube is sealed at the distal end, and there are perforations in the area of the tube that would be in the pharynx.
COMBITUBE • When the long tube is in the esophagus, the patient is ventilated through this short tube • The long tube is open at the distal end, and it has a cuff that is blown up to seal the esophagus or the trachea • If the long tube goes into the esophagus, the cuff is inflated and the patient is ventilated through the short tube.
COMBITUBE • If the long tube goes into the trachea, the cuff is inflated and the patient is ventilated through the long tube.
COMBITUBE/ESSENTIALS • Use only in patients who are unresponsive and without protective gag reflex • Do not use in any patient with injury to the esophagus and children below 15 • Pay attention to placement • Insert gently and without force • Remove once patient regains consciousness