Improving Ventilation
This ABG parameter informs us of adequate ventilation.
What is PaCO2?
This ABG parameter informs us of adequate oxgenation.
What is PaO2 (or SaO2)?
Interpret the following ABG:
pH 7.50
PaCO2 29 torr
PaO2 86 torr
SaO2 97%
HCO3 23 mEq/L
What is uncompensated respiratory alkalosis?
This weaning mode allows the patient to breathe spontaneously while the number of mandatory breaths can be decreased.
What is SIMV?
A MIP of this value is considered acceptable.
What is -20 cmH20?
These two parameters are adjusted to alter a patient's minute ventilation.
What are tidal volume and frequency (respiratory rate)?
An FiO2 greater than this level for more than 48 hours can cause oxygen toxicity.
What is 60%?
Interpret the following ABG:
pH: 7.22 PaCO2: 43 mmHg
PaO2: 88 mmHg HCO3: 18 mmHg
What is metabolic acidosis?
This test will assess the presence of airway edema prior to extubation.
What is a cuff leak test?
A RSBI of this value indicates that a patient is ready to be weaned.
What is <105?
Adjusting this will alter the tidal volume in Pressure Control Ventilation (PCV).
What is inspiratory pressure?
This body position allows for better V/Q matching to improve oxygenation.
What is prone position?
A PaO2 of 54 mmHg would be considered this level of hypoxemia.
What is moderate hypoxemia?
This test is a way to determine if a patient is breathing too quickly with small tidal volumes.
What is the RSBI?
This is considered an acceptable spontaneous Respiratory Rate when weaning a patient from mechanical ventilation.
What is <25 bpm?
When deciding to correct a respiratory acidosis, which parameter should you increase first?
What is tidal volume?
This level of PEEP is considered therapeutic, which improves oxygenation.
What is >5 cmH2O?
Interpret the following ABG:
pH 7.38 PaCO2 42 mmHg
PaO2 67 mmHg HCO3 24 mEq/L
This mode is often used during weaning to allow the patient to breath spontaneously.
What is CPAP?
This is an acceptable value for Vital Capacity.
What is at least 10 ml/kg?
This is the formula to calculate the desired Vt or f.
Desired Vt/f = Known Vt/f x Known PaCO2/Desired PaCO2
What is the best way to increase the patient's Mean Airway Pressure to improve oxygenation?
What is adding PEEP?
Interpret the following ABG:
pH: 7.32 PaCO2: 59 mmHg
PaO2: 38 mmHg HCO3: 30 mEq/L
What is partially compensated respiratory acidosis with severe hypoxemia?
Extubation is considered a failure if the patient needs to be reintubated within ____ hours.
What is 8 hours?
This is considered a normal amount of deadspace (Vd/VT %).
What is 20-40%