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53 Cards in this Set
- Front
- Back
How are foreign bodies or tissue masses that are beyond the main stem bronchi removed?
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Bronchoscopy
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Key factors to avoid or minimize complications associated with suctioning
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1. preoxygenate
2. limit neg. P & sx time 3. use sterile technique |
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Primary indications for an artificial tracheal airway
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1. relieve airway obstruction
2. facilitate secretion removal 3. protect against aspiration 4. provide PPV |
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What are the two basic types of tracheal airways
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endotracheal (translaryngeal)
tracheostomy |
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preferred route for establishing an emergency tracheal airway
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visualized oral endotracheal
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How can endotracheal tube position be confirmed?
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laryngoscopy
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Serious complications of emergency airway management
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acute hypoxemia, hypercapnia, bradycardia and cardiac arrest
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Primary indication for tracheotomy
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continuing need for artificial airway after prolonged period of nasal or oral intubation
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most common laryngeal injuries associated with ET intubation
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glottic edema, vocal cord inflammation, laryngeal/vocal cord ulcerations, and vocal cord polyps or granulomas
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In what type of artifical airways can laryngeal lesions occur
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Only with oral or nasal intubation
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In what type of artificial airways can tracheal lesions occur
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In any type of artificial airway
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What are the most common tracheal lesions
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granulomas, tracheomalacia, and tracheal stenosis
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to minimize or prevent trauma due to tracheal airways
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1. select correct airway size
2. avoid tube movement or action 3. limit cuff pressure 4. use sterile technique |
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To minimize risk of infection
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1. use closed suction devices
2. use passive humidification 3. monitor cuff pressure 4, use subglottic sx 5. keep head of bed elevated |
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Endotracheal tube obstruction can be caused by:
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1. kinking or biting of tube
2. herniation of cuff over tip 3. jamming of tube orifice over tracheal wall 4. mucus plugging |
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what are the steps if a tracheal airway appears completely obstructed
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1. reposition pt. head & neck
2. deflate tube cuff 3. try passing sx catheter 4. try removing tracheostomy inner cannula 5. remove airway & provide BVM ventilation & oxygenation |
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A patient is ready to extubate if he or she:
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1. can maintain adequate ventilation & oxygenation
2. is at minimal risk for upper airway obstruction 3. has adequate airway protective reflexes 4. can adequately clear secretions |
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Tracheostomy decannulation can be accomplished by:
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using fenestrated tubes, progressively smaller tubes, or tracheostomy buttons
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When can a laryngeal mask airway or combitube be used
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if a difficult intubation is encountered
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when is cricothyroidotomy performed
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when patient cannot be intubated or ventilated
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Key points in planning & conducting fiberoptic bronchoscopy include:
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premedication, equipment preparation, airway preparation, and monitoring
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How do you determine proper sx catheter size to use with a given tracheal tube
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Multiply ET tubes inner diameter by 2 and then use the next smallest size catheter
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To avoid possible obstruction by catheter when sx:
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the size of the sx tube catheter outer diameter should never be greater than 1/2 to 2/3 of the size of the inner diameter of the tracheal airway
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With CNS depression, what order are the reflexes lost?
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from top to bottom
pharyngeal (gag) laryngeal tracheal carinal (cough) |
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What happens when the pharyngeal reflex is stimulated?
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Gag & swallow reflex
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How far should the ET tube be advanced?
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2-3 cm past the vocal cords
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What size must the airway be in order for stridor to be present
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5 mm or less in diamter
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What is an absolute containdication of nasotracheal suctioning
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epiglottitis and croup
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In what type of tracheal airways can a foam cuff be used?
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Only in tracheostomy tubes
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the tip of an endotracheal tube should ideally be how far above the carina
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5 cm or a range of 3-5
1 1/2 inches above carina or 2-3 cm beyond vocal cords |
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What is the average measurement at the teeth of an ET tube
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22 cm
Range 21-23 cm |
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What is indicated when there is marked stridor?
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Artificial airway is usually needed; Mild requires racemic epinephrine
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What are 2 techniques used to reduce the likely hood of tracheal dilation
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MOV - minimum occlusion volume
MLT - minimum leak technique |
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What is the ideal cuff pressure
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25 mmHg or less
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what is laryngeal stenosis
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normal laryngeal tissue is replaced by scar tissue, causes stricture & decreased mobility
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what are the most common tracheal lesions
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granulomas
tracheomalacia tracheal stenosis |
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why do tracheal tubes increase incidence of pulmonary infections
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1. bypassed UA filtration 2.
aspiration of pharyngeal material 3. contaminated equipmemt or solutions 4. impaired mucociliary clearance in trachea 5. increased mucosal damage from tub or sx 6. ineffective cough |
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What is the optimal cuff pressure? What is the acceptable range?
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optimal is 25 mmHg or less
range 25-30 mmHg |
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Bedside methods to assess ET Tube placement
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auscultation of chest/abdomen
watch chest rise tube length (cm at teeth) esophageal detection device light wand capnometry colorimetry fiberoptic laryngoscope |
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Factors to consider in switching from ET tube to tracheostomy
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projected time AA needed
tolerance to ET tube pt. overall condition able to tolerate surgery risk/benefit ratio |
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approximate tracheostoy tube inner diameter for adult
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6-11 mm
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In general the tracheal tube size is correct if:
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it occupiesbetween 2/3 to 3/4 of the internal trachea diameter
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what is tracheomalacia
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softening of the cartilaginous rings of the trachea which causes collapse on inspiration
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what is tracheal stenosis
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narrowing of the tracheal lumen due to fibrous scarring
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The passy muir valve can be used with what type of patients
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spontaneously breathing or ventilator dependants; (cuff must be deflated)
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partial airway obstruction in a spontaneously breathing patient will exhibit
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decreased breath sounds
decreased airflow through tube |
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partial airway obstruction in a pt. receiving VCV will exhibit
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rise in PIP, often causing high pressure alarm to sound
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What are clinical signs of complete airway obstruction
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pt. exhibit severe distress
no breath sounds no gas flow through tube |
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a cuff leak in a pt receiving MV will cause
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system leak resulting in loss of delivered volume, and/or decreased inspiratory pressure
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define bronchoscopy
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general term to describe insertion of an endoscope into the bronchi
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What is the purpose of bronchoscopy
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inspect airway
remove objects from airway collect sample place device into airway |
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What procedures is a rigid bronchoscope is used
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to advance to and view segmental bronchi; lg. diameter allows for sx of thick inspissated secretions & lg. mucus plugs; biopsy of tumors and removal of foreign bodies can also be done
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what is the standard port size on a resucitation device and mask:
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22 mm port
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