Airway Management - CPAP, Stomas, Obstructions, & ALS Assist Flashcards
Alveolar collapse
Atelectasis
What does the CPAP do?
Increases pressure in the lungs, opens collapsed alveoli and prevents further alveolar collapse, pushes more oxygen across the alveolar membrane, and forces interstitial fluid back into the pulmonary circulation
Desired effect of the CPAP
Improve pulmonary compliance and make spontaneous ventilation easier for the patient
Many CPAP systems use ___ as the driving force to deliver positive ventilatory pressure
Oxygen
Some CPAP units can empty a D cylinder in ___
5 to 10 minutes
CPAP pressure relief valve determines ___
The amount of pressure the patient must breathe against and overcome
The amount of pressure the patient must breathe against and overcome
Expiratory positive airway pressure
EPAP
Expiratory positive airway pressure
CPAP EPAP setting typically ranges between ___
5 and 20 cm H2O
As a patient breathes against the EPAP, positive pressure is redirected to the ___
Lower airway
Patients benefit the most from CPAP during ___
Exhalation rather than inhalation
CPAP lowers the ___ of the heart
Cardiac output
CPAP is for ___
Patients experiencing respiratory distress in which their own compensatory mechanisms are not enough to keep up with the oxygen demand
General indications for using CPAP
- Patient is alert and able to follow commands
- Patient is displaying obvious signs of moderate to severe respiratory distress from an underlying pathology, such as pulmonary edema or obstructive pulmonary disease, or bronchospasm
- Respiratory distress occurs after a submersion incident
- Patient is breathing so rapidly that it affects overall minute volume
- Pulse oximeter reading is less than 90%
General contraindications for using CPAP
- Patient is in respiratory arrest or has agonal respirations
- Patient is hypoventilating
- Patient cannot speak
- Patient is unresponsive or otherwise unable to follow verbal commands
- Patient cannot protect their own airway
- Patient has hypotension
- Signs and symptoms of pneumothorax or chest trauma are present
- Patient has a tracheostomy
- Active gastrointestinal bleeding, nausea, or vomiting is present
- Patient has experienced facial trauma
- Patient is in cardiogenic shock
- Patient cannot sit upright
- CPAP system mask and strap cannot properly fit
- Patient cannot tolerate the mask
If CPAP is on a patient who deteriorates ___
Initiate positive-pressure ventilation with a bag-mask device attached to high-flow oxygen
CPAP units generally comprise a ___
- Generator
- Mask
- Circuit with corrugated tubing
- Bacteria filter
- One-way valve
The CPAP generator creates resistance that creates ___
Back pressure into the airways that pushes open the smaller airway structures as the patient exhales
CPAP pressure of __ is a generally acceptable therapeutic range
7.0 to 10.0 cm H2O
A typical CPAP unit will deplete a full D cylinder of oxygen in ___
15 to 30 minutes
The rate a CPAP oxygen bottle is depleted depends on ___
The fraction of inspired oxygen (FIO2) setting
Position for patient when using CPAP mask
High Fowler position
Valve to adjust CPAP
PEEP valve
PEEP valve
Positive end-expiratory pressure valve
The high pressure of the CPAP could cause a ___
Pneumothorax
A patient with a tracheostomy may have numerous holes in the neck, you should ignore any opening other than the ___
Midline tracheal stoma
If a patient has a tracheostomy tube, ventilate ___
Through the tube with a bag mask device and 100% oxygen attached directly to the device
If a patient has a stoma and no tube is in place ___
Use an infant or child mask to make a seal over the stoma, and seal the patient’s mouth and nose with one hand. Release the seal on the mouth and nose for exhalation