Podcast
Questions and Answers
What is the primary purpose of pre-oxygenation before the induction of general anesthesia?
What is the primary purpose of pre-oxygenation before the induction of general anesthesia?
- To increase the concentration of nitrogen in the patient's lungs.
- To decrease the patient's FRC.
- To create a 100% concentration of oxygen in the patient’s FRC. (correct)
- To reduce the safety margin for intubation.
What step immediately follows pre-oxygenation in standard airway management?
What step immediately follows pre-oxygenation in standard airway management?
- Induction of general anesthesia. (correct)
- Insertion of a supraglottic airway.
- Taping the patient's eyes shut.
- Application of cricoid pressure.
What is the purpose of using a stylet when preparing an endotracheal tube (ETT)?
What is the purpose of using a stylet when preparing an endotracheal tube (ETT)?
- To lubricate the ETT.
- To test the cuff on the ETT.
- To inject the cuff with 10ml of air.
- To shape the ETT into a "hockey stick" position for insertion. (correct)
Which of the following best describes the Sellick maneuver?
Which of the following best describes the Sellick maneuver?
Why is it important to check the ability to mask ventilate a patient after induction of general anesthesia?
Why is it important to check the ability to mask ventilate a patient after induction of general anesthesia?
What is the key difference between a Rapid Sequence Intubation (RSI) and a 'Modified' RSI?
What is the key difference between a Rapid Sequence Intubation (RSI) and a 'Modified' RSI?
What is the correct position to place a patient in to optimize airway management?
What is the correct position to place a patient in to optimize airway management?
What is the role of eye protection during airway management?
What is the role of eye protection during airway management?
What is the primary purpose of a bougie during intubation?
What is the primary purpose of a bougie during intubation?
In what Cormack-Lehane grades is the use of a bougie typically indicated?
In what Cormack-Lehane grades is the use of a bougie typically indicated?
What is the significance of the 'J' shape at the tip of a bougie?
What is the significance of the 'J' shape at the tip of a bougie?
What is the standard length of a bougie?
What is the standard length of a bougie?
Which of these is NOT a characteristic of video laryngoscopy?
Which of these is NOT a characteristic of video laryngoscopy?
Which approach is recommended when using video laryngoscopy with a Glidescope?
Which approach is recommended when using video laryngoscopy with a Glidescope?
According to the information, the use of video assisted intubation improves Cormack-Lehane views from grades 3 and 4 to 1 and 2 what percentage of the time?
According to the information, the use of video assisted intubation improves Cormack-Lehane views from grades 3 and 4 to 1 and 2 what percentage of the time?
What is a key benefit of using video laryngoscopy in patients who are difficult to intubate?
What is a key benefit of using video laryngoscopy in patients who are difficult to intubate?
What is the recommended gauge size for an angiocath used in transtracheal jet ventilation?
What is the recommended gauge size for an angiocath used in transtracheal jet ventilation?
Which of the following is a potential early complication of a cricothyrotomy?
Which of the following is a potential early complication of a cricothyrotomy?
What is the recommended size of ETT for a surgical cricothyrotomy?
What is the recommended size of ETT for a surgical cricothyrotomy?
What is the primary source of oxygen delivery in transtracheal jet ventilation?
What is the primary source of oxygen delivery in transtracheal jet ventilation?
Which of the following is a component of a surgical cricothyrotomy?
Which of the following is a component of a surgical cricothyrotomy?
What is the initial step in a percutaneous cricothyrotomy?
What is the initial step in a percutaneous cricothyrotomy?
What is a potential late complication of cricothyrotomy?
What is a potential late complication of cricothyrotomy?
What is a preferred method when performing a needle cricothyrotomy?
What is a preferred method when performing a needle cricothyrotomy?
What is a primary advantage of using Transtracheal Jet Ventilation (TTJV)?
What is a primary advantage of using Transtracheal Jet Ventilation (TTJV)?
What is a key limitation when using TTJV regarding ventilation?
What is a key limitation when using TTJV regarding ventilation?
What is the recommended I:E ratio when using TTJV?
What is the recommended I:E ratio when using TTJV?
Which of the following is a potential complication associated with TTJV?
Which of the following is a potential complication associated with TTJV?
During TTJV, what should be continuously monitored and documented?
During TTJV, what should be continuously monitored and documented?
During lightwand intubation, a well-defined glow at the sternal notch indicates passage through which structure?
During lightwand intubation, a well-defined glow at the sternal notch indicates passage through which structure?
What is the primary purpose of the ring at the proximal end of an Endotrol ET tube?
What is the primary purpose of the ring at the proximal end of an Endotrol ET tube?
What does a B.A.A.M. whistle do?
What does a B.A.A.M. whistle do?
Which of the following is the most common approach to a known difficult airway using a fiberoptic scope?
Which of the following is the most common approach to a known difficult airway using a fiberoptic scope?
Which of these medications is used as an antisialogogue to reduce secretions before fiberoptic intubation?
Which of these medications is used as an antisialogogue to reduce secretions before fiberoptic intubation?
What is the function of Williams, Ovassapian and Berman airways during fiberoptic intubation?
What is the function of Williams, Ovassapian and Berman airways during fiberoptic intubation?
When using a fiberoptic scope for intubation, how should the distal hand hold the scope?
When using a fiberoptic scope for intubation, how should the distal hand hold the scope?
What action is often required in anesthetized patients during fiberoptic intubation to optimize conditions?
What action is often required in anesthetized patients during fiberoptic intubation to optimize conditions?
In the context of difficult airway management, when might a needle cricothyrotomy be necessary?
In the context of difficult airway management, when might a needle cricothyrotomy be necessary?
During advancement of a fiberoptic scope, what should be done if the visual field is lost?
During advancement of a fiberoptic scope, what should be done if the visual field is lost?
What is the recommended range of pressure in Newtons for applying cricoid pressure?
What is the recommended range of pressure in Newtons for applying cricoid pressure?
Which of the following is NOT a risk associated with applying cricoid pressure?
Which of the following is NOT a risk associated with applying cricoid pressure?
When should cricoid pressure be released during intubation?
When should cricoid pressure be released during intubation?
During mask ventilation, what is the purpose of the 'C' formed by the thumb and index finger?
During mask ventilation, what is the purpose of the 'C' formed by the thumb and index finger?
When using the 'EC' technique for mask ventilation, which fingers lift the mandible into the mask?
When using the 'EC' technique for mask ventilation, which fingers lift the mandible into the mask?
What is the primary function of an oral airway (OPA)?
What is the primary function of an oral airway (OPA)?
How is the correct size of an oral airway (OPA) determined?
How is the correct size of an oral airway (OPA) determined?
A nasal pharyngeal airway (NPA) is sized by measuring the distance from the nasal opening to which landmark?
A nasal pharyngeal airway (NPA) is sized by measuring the distance from the nasal opening to which landmark?
During direct laryngoscopy using a Mac blade, where should the blade be advanced?
During direct laryngoscopy using a Mac blade, where should the blade be advanced?
What does a Cormack-Lehane Grade III view indicate during direct laryngoscopy?
What does a Cormack-Lehane Grade III view indicate during direct laryngoscopy?
During a BURP maneuver, in what direction should pressure be applied to the thyroid cartilage?
During a BURP maneuver, in what direction should pressure be applied to the thyroid cartilage?
Which of the following is NOT a step to verify the integrity of a reusable LMA before insertion?
Which of the following is NOT a step to verify the integrity of a reusable LMA before insertion?
During an LMA insertion, what should be done if resistance is initially felt as the device is advanced?
During an LMA insertion, what should be done if resistance is initially felt as the device is advanced?
What does the acronym RODS stand for in reference to LMA placement?
What does the acronym RODS stand for in reference to LMA placement?
What is a distinct advantage of the Fastrach LMA over the classic LMA?
What is a distinct advantage of the Fastrach LMA over the classic LMA?
Flashcards
Sniffing Position
Sniffing Position
The sniffing position helps align the pharyngeal, oral, and laryngeal axes, making intubation easier.
Pre-oxygenation
Pre-oxygenation
Pre-oxygenation washes out nitrogen from the lungs, increasing the time a patient can safely hold their breath before intubation.
Rapid Sequence Induction (RSI)
Rapid Sequence Induction (RSI)
A rapid sequence induction (RSI) uses a specific sequence of medications to ensure a safe and rapid intubation in patients at high risk for aspiration.
Cricoid Pressure (Sellick Maneuver)
Cricoid Pressure (Sellick Maneuver)
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Succinylcholine
Succinylcholine
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Propofol
Propofol
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Modified Rapid Sequence Induction (RSI)
Modified Rapid Sequence Induction (RSI)
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Stylet in ‘Hockey Stick’ Position
Stylet in ‘Hockey Stick’ Position
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What is a tracheal bougie?
What is a tracheal bougie?
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How does a tracheal bougie help with intubation?
How does a tracheal bougie help with intubation?
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How does the bougie confirm correct ETT placement?
How does the bougie confirm correct ETT placement?
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What is video laryngoscopy?
What is video laryngoscopy?
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How does video laryngoscopy differ from direct laryngoscopy?
How does video laryngoscopy differ from direct laryngoscopy?
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What are the advantages of video laryngoscopy in difficult airways?
What are the advantages of video laryngoscopy in difficult airways?
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What is important to remember when using a video laryngoscope?
What is important to remember when using a video laryngoscope?
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What is the impact of the Glidescope on airway management?
What is the impact of the Glidescope on airway management?
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Lightwand Intubation
Lightwand Intubation
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Endotrol ET Tube
Endotrol ET Tube
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B.A.A.M Whistle
B.A.A.M Whistle
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Fiberoptic Intubation
Fiberoptic Intubation
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Awake Fiberoptic Intubation (AFOI)
Awake Fiberoptic Intubation (AFOI)
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Antisialogogue
Antisialogogue
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Williams, Ovassapian, and Berman Airways
Williams, Ovassapian, and Berman Airways
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Needle Cricothyrotomy
Needle Cricothyrotomy
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Tracheal Rings for Orientation
Tracheal Rings for Orientation
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Optimizing Fiberoptic Conditions
Optimizing Fiberoptic Conditions
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Tracheal-Tracheal Jet Ventilation (TTJV)
Tracheal-Tracheal Jet Ventilation (TTJV)
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How long is TTJV effective?
How long is TTJV effective?
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What is the downside of TTJV?
What is the downside of TTJV?
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What does I:E ratio mean in TTJV?
What does I:E ratio mean in TTJV?
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What are potential risks of TTJV?
What are potential risks of TTJV?
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Cricothyrotomy
Cricothyrotomy
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Transtracheal Jet Ventilation (TTJV)
Transtracheal Jet Ventilation (TTJV)
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Surgical Cricothyrotomy
Surgical Cricothyrotomy
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Percutaneous Cricothyrotomy
Percutaneous Cricothyrotomy
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Improper Tube Placement
Improper Tube Placement
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Subcutaneous Emphysema
Subcutaneous Emphysema
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Vocal Cord Injury
Vocal Cord Injury
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Aspiration
Aspiration
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BVM Pressure
BVM Pressure
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One-Handed Mask Ventilation (EC Technique)
One-Handed Mask Ventilation (EC Technique)
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Difficult Mask Ventilation
Difficult Mask Ventilation
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Oral Pharyngeal Airway (OPA)
Oral Pharyngeal Airway (OPA)
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Nasal Pharyngeal Airway (NPA)
Nasal Pharyngeal Airway (NPA)
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Direct Laryngoscopy
Direct Laryngoscopy
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Cormack and Lehane Grading System
Cormack and Lehane Grading System
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BURP Maneuver
BURP Maneuver
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Laryngeal Mask Airway (LMA)
Laryngeal Mask Airway (LMA)
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Reusable LMA Inspection
Reusable LMA Inspection
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LMA Insertion
LMA Insertion
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Fastrach (Intubating LMA)
Fastrach (Intubating LMA)
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Intubating Bougie (Eschmann Stylet)
Intubating Bougie (Eschmann Stylet)
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Difficult Intubation
Difficult Intubation
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Intubation
Intubation
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Study Notes
Airway Management
- Prepare equipment: Appropriately sized masks, oral and nasal airways, laryngoscope with extra handles and blades, adequate light source, extra ETT (endotracheal tube) often one size smaller with stylet, syringe (10ml), and suction.
- Prepare patient: Position head at waist level or higher, "sniffing" position, ramped if needed, pre-oxygenate with 100% FiO2.
- Pre-oxygenation: Washes out nitrogen (79% in room air), increases safety margin from 3-5 minutes to 10–12 minutes, creates 100% concentration of O2 in patient's FRC (functional residual capacity).
- Protect patient: During induction, tape eyes shut and apply ointment to prevent corneal abrasions.
- Mask ventilation and adjuncts: Assess ability to mask ventilate (+ETCO2). Use additional adjuncts (oral airways, nasopharyngeal airways, etc.) as needed.
- Intubation: If intubating, give paralytic and ventilate with volatile, maintain anesthetic depth, when paralytic takes effect then intubate, if difficulty then try alternative methods/adjuncts, maintain mask ventilation between attempts. Alternative is supraglottic airway or continue mask airway management (+ETCO2).
- Rapid Sequence Induction (RSI): RSI is used when patient is high-risk for aspiration, includes anesthesia induction with Propofol, neuromuscular blockade with Succinylcholine.
- Laryngoscopy: Steps in performing include open mouth via "scissoring", placing blade along right side of mouth avoiding teeth, and advancing blade while sweeping tongue to the left, and if using Miller blade, advancing to epiglottis.
- LMA (laryngeal mask airway): Hold LMA as if it were a pen, slide along hard palate to posterior pharynx, stop when resistance felt, and properly place against hypopharyngeal floor. Inflate the cuff to 60cm H2O.
- Mask ventilation: Apply manual breath and listen for leak, 20 cmH20 with LMA classic, up to 30cmH20 with LMA Proseal, E&E states up to 40-45cmH2O. Observe for ETCO2 and breath sounds, if leak observe LMA may not be seated well or epiglottis may be downfolded.
Cricoid Pressure/Sellick Maneuver
- Position cricoid cartilage against cervical vertebrae to prevent regurgitation and aspiration.
- Require 6-10 lbs (30–44 Newtons) of pressure.
- Do not release until successful intubation confirmed.
Mask Ventilation Equipment
- Orifice: 22mm ID
- Body: transparent for observation of exhaled mist.
- Rim/Cushion: can inflate or deflate for a good fit (with 10cc syringe).
- Multiple sizes for variability.
Mask Ventilation Technique
- One-handed technique (left hand): creating "C" shape with thumb and index finger to prevent leaks and apply slight downward pressure on mask.
- Ensure care is taken to prevent compressing soft tissue (can cause obstruction). Middle and fourth fingers are placed under mandible. Utilize 5th finger to lift jaw to open airway.
Cricoid Pressure: Risks
- Possible vomiting,
- airway obstruction,
- Difficult glottic visualization
- Decreased upper/lower esophageal sphincter tone.
Difficult Mask Ventilation Criteria
- Inability to provide adequate ventilation due to: insufficient mask seal, excessive gas leak, or excessive resistance to gas ingress/egress.
Cormack and Lehane Grading System
- Grade I: full view of glottic opening
- Grade II: posterior glottic opening, no anterior commissure.
- Grade III: epiglottis visible but no glottic opening
- Grade IV: epiglottis not visible, view of soft palate only.
Optimizing Laryngoscopy View
- Sniffing position and "ramping" can improve view.
- BURP maneuver (hand on thyroid cartilage, external backward and superior pressure, with right hand) for improved vocal cords view
Supraglottic Airway Devices
- Inspect Visual/Discoloration/Broken/Cracks/Cuff Herniation/Misshaped Tip.
- Perform Kink test.
- Deflate/Inflate for Leak Testing.
- Lubricate dorsal surface just prior to use.
- Open mouth.
Patients who shouldn't get an LMA
- Restricted mouth opening.
- Obstruction in airway.
- Distortion of anatomy.
- Stiff lungs (asthma, COPD, morbidly obese).
- High pressures needed for ventilation.
Fastrach (Intubating LMA)
- Improved features over classic LMA: single-handed handle, accepts larger ETT, reinforced tube, epiglottic elevating bar, increased success rate.
- Three sizes (3, 4, 5), all accommodate #8.0 ETT.
Intubating Bougie or Eschmann Stylet
- Flexible, semi-rigid device for difficult intubations.
- Acts as a guide when direct visualization of cords is challenging.
- "J" shape at the tip aids in maneuvering around epiglottis, aids in visualization
- Allows for feeling tracheal rings (clicking).
- "J" Shape: Manuevering around the Epiglottis and through the cords
Video Laryngoscopy
- Improved view of vocal cords (indirect view).
- Sharp angle around structures.
- Midline approach
Fiberoptic Intubation
- Indicated for early difficulty or during intubation attempt, patient might be awake.
- Principles: Antisialogogue (decreases secretions like glycopyrrolate), topicalization (application to surface), vasoconstriction (narrowing of blood vessels).
- Use Fog free solution on tip of fiberoptic scope.
- Use FO airways (Williams, Ovassapian, and Berman airways).
- Protect FO scope (basically an OPA that has a hole to pass the scope).
- Patient positioning in right side, facing, and sitting.
- Keep the scope straight.
Infraglottic Airway Access
- Emergency Techniques when intubation or ventilation is not possible: Needle Cricothyroidotomy, Percutaneous Cricothyrotomy and Surgical Cricothyrotomy.
Transtracheal Jet Ventilation (TTJV)
- Temporary oxygenation method by passing a catheter (10-14 gauge).
- Use when complete obstruction makes using mask or other airway methods impossible.
- Use needle kit.
- Requires appropriate equipment (oxygen source & appropriate tubing with connectors)
- Provides high-pressure.
- Monitor Peak Inspiratory Pressure.
- Monitor compliance
Lightwand & Light-guided Intubation
- Blind placement of lighted stylet for transillumination into the neck.
- Insertion techniques for stylet and ETT.
- Use light glow as guide, using rocking motion.
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