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Airway Management. Objectives. Discuss Oxygen Delivery Systems Discuss Intubation Equipment & Procedures. Oygen Delivery Devises. Nasal Bi-Prong (NBP) Simple Face Mask Venturi Mask Non-Rebreather Ambu-Mask Laryngeal mask airway (LMA) Continous Positive Airway Pressure (CPAP)
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Objectives • Discuss Oxygen Delivery Systems • Discuss Intubation Equipment & Procedures
Oygen Delivery Devises • Nasal Bi-Prong (NBP) • Simple Face Mask • Venturi Mask • Non-Rebreather • Ambu-Mask • Laryngeal mask airway (LMA) • Continous Positive Airway Pressure (CPAP) • Bilevel Positive Airway Pressure (BiPAP) • Endotrachel tube • Tracheostomy
FiO2 Available By Delivery Device • NBP 1 – 6 l/m @3 % for 1st liter and 4% for each additional liter • Venturi Mask 24%- 50 % • Nonrebreather 80-90% • CPAP 3-15cm H2O + O2 • BiPAP 3-15cmH2O + pressure support + O2 • Ambu-Bag 98% • Mechanical Ventilation 30-100%
Anatomy: The Upper Airway Pharynx Laryngopharynx
Anatomy: The Lower Airway Larynx Vocal Cords
Anatomy: The Lower Airway Larynx Epiglottis Vestibule of Larynx Ventricle of Larynx Trachea Laryngopharynx
Basic RSI Protocol • Preparation and Preoxygenation • Midazolam (Versed) 0.1 mg/kg IVP (5-6 mg) • Apply cricoid pressure • Succinylcholine 1 mg/kg IV (100 mg) Intubate
RSI protocol for high ICP or penetrating Eye Injuries • Preparation and Preoxygenation • Prevent ICP rise • Lidocaine 1.5-2 mg/kg IV • Vecuronium .01 mg/kg IV (defasciculating dose) • Consider Fentanyl 3 ug/kg IVP • Prevent Vagally stimulated Bradycardia • Atropine 0.01 mg/kg IV (Minimum dose: 0.1 mg) • Sedation • Etomidate 0.3 mg/kg IVP OR • Thiopental (Pentothal) 4 mg/kg IVP (IF BP stable) • Apply cricoid pressure • Muscle relaxants/Paralytic Agents • Succinylcholine 1.5 mg/kg IV (2 mg/kg if <10 yo) OR • Vecuronium 0.2 mg/kg IV • Intubate
General RSI Protocol (All Options) • Atropine 0.01 mg/kg IV (Minimum dose: 0.1 mg) • Prevents vagally stimulated Bradycardia • Consider Increased Intracranial pressure management • Lidocaine 1 mg/kg IV (Prevents ICP rise) • Fentanyl 3 ug/kg IVP • Consider Vecuronium 1 mg (defasciculating dose) • Sedation • Preferred medications • Etomidate 0.2-0.3 mg/kg IVP • Midazolam (Versed) 0.1 mg/kg IVP • Other options • Thiopental (Pentothal) 3-5 mg/kg IVP • Ketamine 1-2 mg/kg IV • Muscle relaxants/Paralytic Agents • Succinylcholine 1-1.5 mg/kg IV, 2-4 mg/kg IM • Vecuronium (Norcuron) 0.1 mg/kg IV • Pancuronium (Pavulon) 0.1 mg/kg IV
Intubation Indications • Respiratory arrest • Respiratory failure • Hypoventilation/Hypercarbia • paCO2 >55 mmHg • Arterial Hypoxemia refractory to oxygen • paO2 <55 RA, • Respiratory Acidosis • Airway obstruction • Glasgow Coma Scale <=8 • Need for prolonged Ventilatory support • Class III or IV hemorrhage with poor perfusion • Severe flail chest or pulmonary Contusion • Multiple trauma, Head Injury and abnormal mental status • Inhalation Injury with erythema/edema at cords • Protection from aspiration
Preparation • Monitoring Pulse Oximetry (Hypoxemia, Bradycardia) • May pretreat with Atropine 0.02 mg/kg prior to ET • Check laryngoscope for light and blade size • Estimated blade size selection • With laryngoscope blade held next to patient's face • Blade should reach between lips and larynx • Better to choose a blade too long than too short • Adult: #3 to #4 Macintosh Blade (curved) • Child <8 yo: #2 Macintosh Blade (curved) • Term Infant: #1 Miller Blade (straight) • Premature Infant: #0 Miller Blade (straight) • Check suction • Select ET size and length (See Endotracheal Tube) • Stylet should NOT extend beyond distal ET • Intubation attempts should not last >30 seconds • Limit intubation attempt to 20 seconds in newborns • Preoxygenate with 100% Oxygen • Consider Rapid Sequence Intubation if conscious
Endotracheal Tube Insertion • Insert laryngoscope into the right mouth • At the tonsillar pillars sweep Tongue to midline • Extend blade over base of Tongue and • Curved blade: tip into vallecula • Straight Blade: tip over the epiglottis • Avoid entering esophagus first • Risk of laryngeal trauma • Exert traction upward along axis of handle • Do not use teeth or gums as a fulcrum • Results in significant oral/dental trauma • Insert ET Tube from the right corner of mouth • Avoids obstructing view • Cricoid pressure may facilitate glottis viewing • Position ET Tube • Black marker on ET Tube at level of cords • Cuffs should be placed just below cords
Assess Tube Position • Symmetrical Chest Movement • Auscultate for equal breath sounds • Document absent breath sounds over stomach • Vapor condenses on inside of tube with exhalation • End-tidal carbon dioxide (required by new guidelines)
Secure the ET Tube • Confirm tube position again by auscultation • Tape ET Tube in place and fix to cheek with benzoin • Note the distance marker at lips in chart • Commercial tube holder highly recommended