© 2011 National Safety Council 7-1
VENTILATION DEVICES AND OXYGEN
LESSON 7
© 2011 National Safety Council 7-2
Introduction
• EMRs usually provide care for airway and breathing without specialized equipment or supplies
• Adjunctive devices can enhance effectiveness of resuscitation:
- Suction devices help keep patient’s airway clear
- Oral and nasal airways help ensure air reaches patient’s lungs
- Bag mask units for more effective ventilation
- Supplemental oxygen
© 2011 National Safety Council 7-3
Introduction (continued)
• Resuscitation adjuncts used depend on training and job
• Devices may not always be available – be able to ventilate without special equipment
• Never delay care while waiting for adjunctive equipment
© 2011 National Safety Council 7-4
Suction Devices
• Used to clear blood, vomit, other substances from patient’s airway
• Suction equipment includes manual devices, powered devices, soft bulb syringes
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Using Suction Devices
• Clear plastic tip is inserted into mouth or nostrils
• Suction tips vary from small, soft plastic tips, to larger, more rigid tips
• Some devices have suction control port at base of tip
• Be familiar with specific equipment you may use
© 2011 National Safety Council 7-6
Uses of Suction
• Useful if airway is fully or partially obstructed
• Most suction units inadequate for removing solid objects
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General Principlesof Suctioning
• If patient vomits during ventilation, or secretions or blood impede ventilation, stop and quickly suction before continuing resuscitation
• Airway usually needs suctioning if you hear gurgling sounds during breathing or ventilation
• Turn patient’s head to side to help drain vomit or fluids before suctioning
• If patient may have spinal injury, turn head and body inline as a unit with help of other responders
© 2011 National Safety Council 7-8
Suction: Safety Precautions
• Prolonged contact with mucous membranes can cause bruising, swelling, bleeding
• Never insert suction tip further than you can see
• Vigorous suctioning may stimulate gag reflex
• Do not suction infant too deeply and suction mouth before nose
• Use standard precautions
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• 15 seconds at a time for adults
• 10 seconds at a time for children
• 5 seconds at a time for infants
Do Not Suction Longer Than
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Suction in an Infant
• Watch for a decreased heart rate
• If pulse is slow, stop suctioning and provide ventilation
• Don’t suction too deep in an infant
• Always suction infant’s mouth before nostrils – suctioning nose may stimulate infant to inhale fluid or secretions from mouth
© 2011 National Safety Council 7-11
Skill: Suctioning (Adult or Child)
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1. Confirm suction device working and produces suction
2. Turn patient’s head to one side and open mouth
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3. Sweep out solids and larger amounts of fluid with finger
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4. Determine maximum depth of insertion
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5. Turn on suction or pump handle to create suction
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6. Insert catheter tip into mouth, move tip as you withdraw it
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7. Reposition patient’s head with airway open and begin or resume ventilation if needed
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Skill: Suctioning (Infant)
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1. Hold infant in position for suctioning
• Head lower than body
• Turned to one side
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2. Squeeze suction bulb and insert tip into infant’s mouth
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3. Gradually release bulb to create suction as you withdraw tip
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4. Move bulb aside, squeeze it with tip down to empty
5. Repeat if necessary
6. Repeat suctioning steps for each nostril
7. Resume rescue breathing or CPR
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Airway Adjuncts
• Help keep patient’s airway open
• Prevent obstruction by tongue more easily than head position alone
• Supplemental oxygen can be given through mask or bag-valve-mask (BVM) with airway in place
© 2011 National Safety Council 7-24
Oral Airways
• Use only with unresponsive patient without gag reflex
• Can be breathing or not
• Available in variety of sizes
• Patient can be suctioned with airway in place
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Sizing and Placement of Oral Airways
• Proper placement is essential
• Periodically reassess to confirm airway remains in proper position
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Skill: Oral Airway Insertion
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1. Choose correct size
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2. Open patient’s airway with head tilt–chin lift or jaw thrust and open the mouth
3. Insert with tip pointing toward roof of mouth
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4. When tip reaches back of mouth and you feel resistance, rotate airway 180 degrees
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5. Continue to insert until flange rests on lips
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Oral Airway in Children
1. Select proper size – measure from corner of patient’s lips to bottom of earlobe or angle of jaw
2. Open patient’s mouth
3. Use a tongue blade to press tongue down and out of way
4. Insert airway in the upright (anatomic) position
Alternate technique for inserting an oral airway in infants/children:
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Nasal Airways
• Use with responsive patient
• Use with unresponsive patient with gag reflex
• Use with unresponsive patient with mouth or jaw injuries or tightly clenched teeth
© 2011 National Safety Council 7-33
Nasal Airways (continued)
• Do not use with significant facial injuries and significant head trauma
• Less likely to cause gagging and vomiting than oral airways
• Difficult to suction
• Cause pain or significant bleeding in some patients
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Skill: Nasal Airway insertion
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1. Choose correct size
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2. Lubricate airway
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3. Insert into right nostril with bevel toward septum
Insert straight down
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4. Insert straight back, sliding along floor of nostril
5. Insert until flange rests against nose
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After Insertion of Nasal Airway
• Continue to keep patient’s airway open with head tiltchin lift or jaw thrust
• Suction through nasal airway with small flexible suction catheter if needed
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Bag Mask Ventilation
• Bag mask units are more effective for providing ventilations
• Patient receives air from atmosphere (21% oxygen) rather than exhaled air (16% oxygen)
• Can be used for ventilation performed alone or during CPR by 2 rescuers
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Bag Mask Components
self-inflating bag
oxygen reservoir bag
1-way valve
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Using the Bag Mask: Sealing Mask
• Open airway and position mask on patient’s face
• If alone, hold mask in one hand and squeeze bag with other – use C-clamp technique
• If there is a second rescuer, hold mask with both hands
© 2011 National Safety Council 7-43
Using the Bag Mask: Giving Ventilations
• Rescue breaths delivered by squeezing bag
- Squeeze one L bag about ½ to ⅔ of volume
- Squeeze two L bag about ⅓ of volume
• Squeeze bag over one second (watch patient’s chest rise)
© 2011 National Safety Council 7-44
Using the Bag Mask:Giving Ventilations (continued)
• Give ventilation every 5-6 seconds in adult
• Give ventilation every 3-5 seconds in child
• Give ventilation every 3 seconds in infant
• If supplemental oxygen, give smaller ventilations
© 2011 National Safety Council 7-45
Monitor Bag Mask Ventilations
• Do not over-ventilate patient
• Watch for rise and fall of patient’s chest
• Feel for resistance when squeezing bag
• If air escapes around mask, reposition mask and fingers
• If problem occurs or you cannot get a good seal, use alternate technique
© 2011 National Safety Council 7-46
Bag Mask for Inadequate Breathing
• If patient is responsive, explain what you will be doing
• Initially assist patient’s breathing at the rate at which the patient has been breathing
• Squeeze the bag each time the patient begins to inhale
• Gradually adjust the rate and delivered volume of air as appropriate
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Using the Bag Mask: Supplemental Oxygen
• Use supplemental oxygen if possible
• Attach oxygen reservoir bag to valve on bag and attach oxygen tubing to bag
• Use device same way
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BVM with Children and Infants
• Use with a non-breathing infant or child the same as with an adult
• Choose a mask of the correct size
• Squeeze the bag only enough to make the chest rise
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Skill: Bag Mask for Ventilation – Two Rescuers
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• Rescuer 1: Assembles bag mask and positions it over patient’s mouth and nose
• Rescuer 2: Seals mask over patient’s mouth and nose
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• Rescuer 1: Squeezes bag to provide ventilations
• Recheck pulse about every two minutes
• If no pulse, call for AED and start CPR
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Supplemental Oxygen
• Can supply up to 100% oxygen
• Should be used along with other basic life support (BLS) techniques
• Patients with serious medical conditions will benefit
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Supplemental Oxygen: Equipment
• Pressurized cylinder
• Pressure regulator
• Flowmeter
• Oxygen tubing
• Oxygen delivery device
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Safety Around Oxygen
• No smoking or open flame near oxygen source
• Never use grease, oil or adhesive tape on equipment
• Never expose oxygen cylinder to temperature over 120◦F
• Never drop cylinder or let fall against another object
• Never use non-oxygen regulator on oxygen cylinder
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Oxygen Delivery Devices
• Nasal cannula
• Resuscitation mask
• Non-rebreathing mask
• Bag mask
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Nasal Cannula
• Use with breathing patients who do not require high concentration of oxygen
• Oxygen concentration depends on flow rate
• 1 to 6 liters per minute (LPM) delivers 24% to 50% O2
Note: The Nasal
Cannula is placed
entirely in front of patient
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Resuscitation Mask (Pocket Mask)
• Use for non-breathing patients
• Some have oxygen port
• Can be used for breathing patients
• Provides 30% to 60% oxygen with flow rate of 10 LPM
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Non-Rebreather Mask
• Use with breathing patient
• 80% to 95% oxygen with flow at minimum of 8 LPM
• Adjust flow rate to keep reservoir from collapsing completely when patient inhales
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Bag Mask Units
• Delivers oxygen through tube or reservoir
• Up to 100% oxygen
• Can also use with breathing patient
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Oxygen Administration
• If you are alone with patient, do not stop providing BLS to set up oxygen equipment
• Wait until patient is more stable or until another rescuer can help
• Once oxygen set up, continue to monitor oxygen flow rate, tank pressure and patient’s condition
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Skill: Oxygen Administration
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1. Check equipment
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2. Remove any protective seal
3. Point cylinder away
4. Open main valve for one second
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5. Attach regulator and tighten it
Lining up the pins is a critical
step
Don’t forget
the washer
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6. Open main cylinder valve and ensure there are no leaks
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7. Check pressure regulator gauge
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8. Attach oxygen tubing to flowmeter and oxygen delivery device
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9. Set flowmeter at correct rate:
- 1-6 LPM for nasal cannula
- 10 LPM for face mask
- 10-15 LPM for bag mask or
non-rebreathing mask
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10. Confirm oxygen is flowing
11. Position delivery device on patient
12. Monitor pressure gauge
Fi
ng
er
Fill the bagbefore placing on the patient