Airway Management - mums.ac.ir...Head Tilt/Chin Lift Opens most common cause of obstruction, the...
Transcript of Airway Management - mums.ac.ir...Head Tilt/Chin Lift Opens most common cause of obstruction, the...
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Airway Management Sabzevari A,MD.
Pediatric anesthesiologist
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Opening the airway
Remove crash helmet with manual in-line stabilisation of the c-
spine Head tilt (NOT if c-spine injury)
Chin lift with manual in-line stabilisation of the c-spine
Jaw thrust with manual in-line stabilisation of the c-spine
Suction with manual in-line stabilisation of the c-spine
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MANUAL TECHNIQUES
Head Tilt/Chin Lift
Opens most common cause of obstruction, the
tongue
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( عقب افتادن زبان) درمان انسداد راه هوائي فوقان
دادن پوزيشن سر و گردن:( Gaw-thrust -2 , Chine -Lift , Head – tilt -1 )
1 2
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دادن پوزيشن سر و گردن
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Opening the Airway
Performing the head tilt – chin lift
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Oropharyngeal or nasopharyngeal airway
Oral airway Nasal airway
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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
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Always remember that when you do something to
open or control an airway, there are implications
for the cervical spine - Remember the C-Spine!
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Giving Breaths
Mouth – to – Mouth
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to Barrier Device Breathing –Mouth
Mouth – to – Mask
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Adult Bag mask
Technique and Rescue
Breathing
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ماسكهاي آناتوميك
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روش گرفتن ماسك
كشيدن منديبول به عقب و بالا در حالت اكستانسيون: يك دستي
.
كشيدن شديد منديبول به عقب و بالا در حالت : دو دستي
ت اكستانسيون و نگاه راشتن با دو دس
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روش گرفتن ماسك
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Face mask and self inflating bag
Magill forcep
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LARYNGEAL MASK AIRWAY (LMA)
Developed as an alternative to the face mask for achieving and
maintaining control of the airway during routine anesthetic
procedures in the operating room.
Found to be useful in the emergency situation when intubation is
not possible and you can’t ventilate with a BVM
May prevent doing a surgical procedure to open the airway
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LMA
Not designed to seal the esophagus and was not originally meant
for emergency use.
It is not equal to the ET and should only be used when efforts to
intubate the trachea have been unsuccessful and ventilation is
compromised.
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LMA/WARNINGS
Use only in patients who are unresponsive
and without protective reflexes.
Do not use in any patient with injury to the
esophagus
Lubricate only the posterior surface of the
LMA to avoid blockage of the aperture or
aspiration of the lubricant
Patients should be adequately monitored
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LMA/WARNINGS
Never force the device to avoid trauma to the
airway
Never overinflate the cuff. May cause
malposition, loss of seal, or trauma.
If airway problems persist, it should be
removed and reinserted.
Does not prevent aspiration if the patient
vomits
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LMA/WARNINGS
If the patient regains consciousness, you must remove it.
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تكنيك گذاشتن
L.M.A
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ETI Documentation
• Who did it
• With what was it done
• Where was it done
• When was it done
• Why was it performed
Also include at least 3 specific assessments
you made to confirm placement...
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Endotracheal Intubation
• ET tube passes through glottic opening and is sealed with a
cuff inflated against the tracheal wall
− Orotracheal intubation: through the mouth
− Nasotracheal intubation: through the nose
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Endotracheal Intubation
• Advantages
− Secure airway
− Protection against
aspiration
− Alternative to IV or IO
route
• Disadvantages
− Special equipment
− Physiologic functions
bypassed
• Complications
− Bleeding
− Hypoxia
− Laryngeal swelling
− Laryngospasm
− Vocal cord damage
− Mucosal necrosis
− Barotrauma
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Endotracheal Tubes
• Basic structure
includes:
− Proximal end
− Tube
− Cuff and pilot
balloon
− Distal tip
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Endotracheal Tubes
• Sizes range
− 2.5 to 9.0 mm in inside diameter
− 12 to 32 cm in length
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Endotracheal Tubes
• Pediatric patients
− 2.5 to 4.5 mm tubes used
− Funnel-shaped cricoid ring forms an anatomic seal with ET tube
• No need for distal cuff in most cases.
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Endotracheal Tubes
• Anatomic clues can help determine tube size
− Internal diameter of the nostril approximates diameter of glottic
opening
− Diameter of the little finger or size of thumbnail approximates
airway size.
• Always have three sizes ready!
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Laryngoscopes and Blades
• A laryngoscope is
required to perform
orotracheal
intubation by direct
laryngoscopy.
• Consists of a
handle and
interchangeable
blades
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Laryngoscopes and Blades
• Straight (Miller and
Wisconsin) blades
− Tip extends
beneath epiglottis
and lifts it up
• Useful with infants
and small children
• More likely to
damage teeth in
adults
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Laryngoscopes and Blades
• Curved
(Macintosh) blades
− Curve conforms to
tongue and
pharynx
− Tip is placed in the
vallecula
• Indirectly lifts
epiglottis to expose
vocal cords
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Laryngoscopes and Blades
• Blade sizes range from 0 to 4
− 0, 1, and 2 appropriate for infants and children
− 3 and 4 considered adult sizes
− Pediatric patients: based on age or height
− Adults: based on experience, size of patient
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Laryngoscopes and Blades
• Stylet: semirigid wire inserted into ET tube
− Molds and maintains shape of tube
− Should be lubricated for removal
− End should be bent to form a gentle curve
− End should rest at least 1/2″ from end of ET tube
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Laryngoscopes and Blades
• Magill forceps
− Remove airway obstructions under direct visualization.
− Guide tip of ET tube through glottic opening if the proper angle
cannot be achieved by manipulating the tube
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Orotracheal Intubation by Direct Laryngoscopy
• ET tube inserted through mouth and into trachea while
visualizing the glottic opening with a laryngoscope
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Orotracheal Intubation by Direct Laryngoscopy
• Indications
− Airway control needed
due to coma,
respiratory arrest,
and/or cardiac arrest
− Ventilatory support
before impending
respiratory failure
− Prolonged ventilatory
support
− Absence of gag reflex
− Traumatic brain injury
− Unresponsiveness
− Impending airway
compromise
− Medication
administration
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Orotracheal Intubation by Direct Laryngoscopy
• Contraindications
− Intact gag reflex
− Inability to open mouth because of trauma, dislocation of the jaw,
or a pathologic condition
− Inability to see the glottic opening
− Copious secretions, vomitus, or blood in airway
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Standard Precautions
• Intubation can expose you to bodily fluids.
− Take proper precautions.
• Gloves
• Mask that covers your entire face
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Preoxygenation
• Critical before intubating
− 2–3 minutes for apneic or hypoventilating patient
− Prevents hypoxia from occurring
− Monitor SpO2 and achieve as close to 100% saturation as possible.
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Positioning the Patient
• Airway has three
axes: mouth,
pharynx, and
larynx
− At acute angles in
neutral position
− Place patient in
“sniffing” position
to facilitate
visualization of the
airway.
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Positioning the Patient
• Sniffing position
− 20° extension of the atlanto-occipital joint
− 30° flexion at C6 and C7 with short neck and/or no chin
− Elevate head and/or neck until ear is at the level of the sternum
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Blade Insertion
• Position yourself at the
patient’s head.
• Grasp laryngoscope.
• If mouth is not open:
− Place thumb below
bottom lip and
push open.
− “Scissor” thumb
and index finger
between molars
− Open with tongue-
jaw lift
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Blade Insertion
• Insert blade into
right side of mouth
• Sweep tongue to
the left while
moving blade into
midline
• Slowly advance the
blade.
© Jones & Bartlett Learning. Courtesy of MIEMSS. Specimens provided by the Maryland State Anatomy Board,
Department of Health and Mental Hygiene at the Anatomical Services Division, University of Maryland School
of Medicine
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Blade Insertion
• Exert gentle
traction at a 45°
angle as you lift the
patient’s jaw.
− Keep your back
and arm straight as
you pull upward. © Jones & Bartlett Learning. Courtesy of MIEMSS. Specimens provided by the Maryland State Anatomy Board,
Department of Health and Mental Hygiene at the Anatomical Services Division, University of Maryland School of
Medicine
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Visualization of the Glottic Opening
• Continue lifting the
laryngoscope as
you look down the
blade.
• Work the tip of the
blade into position.
− The glottic opening
should come into
view.
• The vocal cords lie
within.
Courtesy of James P. Thomas, M.D. www.voicedoctor.net
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Visualization of the Glottic Opening
• Gum elastic bougie
− Flexible device
− Approximately 1 cm in diameter, 60 cm long
− Used in epiglottis-only views to facilitate intubation
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Visualization of the Glottic Opening
• Gum elastic bougie
(cont’d)
− Insert through the
glottic opening
under direct
laryngoscopy.
− Once placed, it
becomes a guide
for the ET tube.
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Tube Insertion
• Pick up preselected ET tube.
− Hold it near connector as you would a pencil.
• Insert tube from the right corner of mouth through the vocal
cords.
− Continue until the proximal end of the cuff is 1 to 2 cm past the
vocal cords.
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Tube Insertion
• Do not pass the
tube down the
barrel of the
laryngoscope
blade.
− Will obscure your
view of the glottic
opening
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Ventilation
• After you have seen the ET tube cuff pass roughly 1/2″
beyond the vocal cords
− Gently remove the blade.
− Secure tube with right hand
− Remove stylet from tube
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Ventilation
• Inflate the distal cuff with 5 to 10 mL of air, then detach the
syringe from the inflation port.
• Have your assistant attach the bag-mask device to the ET
tube; continue ventilation.
− Ensure that the patient’s chest rises with each ventilation.
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Ventilation
• Listen to both lungs and to the stomach.
− You should hear equal breath sounds and a quiet epigastrium.
• Ventilation should be dictated by age.
− Adult with a pulse: 10 to 12 breaths/min
− Infant/child with a pulse: 12 to 20 breaths/min
− Patient in cardiac arrest: 8 to 10 breaths/min
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Confirmation of Tube Placement
• Visualize the ET tube passing between the vocal cords.
• Auscultate.
− Unequal or absent breath sounds suggest:
• Esophageal placement
• Right mainstem bronchus placement
• Pneumothorax
• Bronchial obstruction
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Confirmation of Tube Placement
• Auscultate (cont’d).
− Bilaterally absent breath sounds or gurgling over the epigastrium:
esophagus was intubated
• Immediately remove ET tube.
• Be prepared to suction the airway.
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Confirmation of Tube Placement
• Auscultate (cont’d).
− Breath sounds only on right: tube has been advanced too far.
• Reposition the tube.
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Confirmation of Tube Placement
• With proper tube position:
− Bag-mask device should be easy to compress.
− You should see corresponding chest expansion.
• Increased resistance may indicate:
− Gastric distention
− Esophageal intubation
− Tension pneumothorax
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Confirmation of Tube Placement
• Continuous waveform capnography plus clinical assessment
− Most reliable method of confirming placement
− Attach capnography T-piece when bag-mask device is attached to
the ET tube.
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Confirmation of Tube Placement
• Esophageal
detector device
− Syringe model:
plunger is
withdrawn
• Tube in the
trachea: plunger
does not move
• Tube in the
esophagus:
plunger moves
back
Courtesy of Marianne Gausche-Hill, MD, FACEP, FAAP
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Confirmation of Tube Placement
• Esophageal
detector device
(cont’d)
− Bulb model: bulb is
squeezed
• Tube in the
esophagus: bulb
remains collapsed
• Tube in the
trachea: bulb
briskly expands
Courtesy of Marianne Gausche-Hill, MD, FACEP, FAAP
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Confirmation of Tube Placement
• After confirming proper placement, mark ET tube where it
emerges from the mouth
− Shows others whether tube has slipped in or out
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Securing the Tube
• Never take your hand off the ET tube before securing with
an appropriate device.
− Support the tube manually while you ventilate to avoid a sudden jolt
from the bag-mask device.
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Securing the Tube
• Steps:
− Note the centimeter marking on the ET tube.
− Remove the bag-mask device.
− Position the tube in the center of the mouth.
− Place the securing device over the tube.
− Reattach the bag-mask device, auscultate, and note the
capnography reading and waveform.
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Securing the Tube
• Many devices feature a built-in bite block.
− Alternative: Secure tube with tape and insert a bite block or oral
airway.
• Minimize head movement in patient.
• See Skill Drill 15-18.
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Assess severity
Severe airway obstruction
(ineffective cough)
Mild airway obstruction
(effective cough)
Unconscious
Start CPR
Conscious 5 back blows
5 abdominal
thrusts
Encourage cough
Continue to check for deterioration to ineffective cough or until obstruction
relieved