Ch. 7 Flashcards
What is selection of FiO2?
The goal of selecting a specific FIO2 for a patient is to achieve a clinically acceptable arterial O2 tension (e.g., 60–100 mm Hg).
What is the formula for selection of FiO2?
If there’s no baseline ABG available, what should you do?
Select a FIO2 setting greater than 50% for a patient with severe hypoxemia
True or false; you should always start with a higher FIO2 then ween down if necessary?
True
What is sensitivity setting?
Ventilator sensitivity is normally set at a level that the patient can easily flow-trigger or pressure-trigger a breath. Flow triggering is set in a range of 1 to 10 L/min below the base flow, depending on the selected ventilator. Pressure sensitivity is commonly set between −1 and −2 cmH2O.
What is the humidification range?
at least 30 mg H2O/Lof absolute humidity at a
temperature range of about 33° to 37° C and for all available flows up to a Ve of 20 to 30 L/min with temp range of 35° to 37° C.
What type of humidification do use for patients on a vent?
HME
What type of humidification do use for patients with thick secretions?
Heated wire circuit
What’s the purpose of alarms?
Designed to alert clinician of potential dangers to patient vent interaction.
What to do if the alarm goes off and you don’t know what the problem is?
Ensure the patient is being ventilated, but when in doubt disconnect and manually resuscitate
True or false; If a patient comes in and we don’t know the FIO2 automatically set it to anything greater than 50%
True
What should the apnea the alarm be set at?
20
What is the periodic hyperinflation sign?
Used to expand collapsed areas of lung involves using sustained high pressures of 35-45 cmH20 for 40-60 sec.
Used to get out extra air
* Not used often*
What are things we set on the vent when the pt comes in?
•FiO2
•RR
•Vt
•PEEP
What should you always have at bedside?
An ambu-bag
