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29 Cards in this Set
- Front
- Back
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What is the most appropriate ventilator mode for OSA? |
CPAP |
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What variables do a spontaneous mechanical ventilator control? |
Patient triggered, limited, and cycled Baseline can be set |
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What type of breath occurs when the ventilator controls the timing, VT, and inspiratory pressure? |
Mandatory breath |
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What is the most appropriate ventilator mode for central sleep apnea? |
NIV or BiPAP |
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What happens to peak airway pressure when Raw increases during V/C ventilation? |
Increases |
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What ventilatory mode is most appropriate for a patient who is hyperventilating due to moderate hypoxemia? |
CPAP with oxygenation |
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What is the trigger, limit, and cycle for an assisted breath in the PC-CMV? |
Time or patient triggered, pressure targeted, time cycled |
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What ventilation mode is most appropriate initially for a patient who has the following ABG: pH 7.34, PCO2 46mmHg, PaO2 52mmHg, oxygen saturation 86%, HCO3- 24mEq/L? Patients respirations are 30bpm and labored. Currently on a nonrebreather mask. |
CPAP or BiPAP |
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What is the ventilator mode that allows the patient to breathe spontaneously between operator selected time triggered volume and pressure targeted breaths? |
SIMV |
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What type of pressure time scalar is this? |
PC-IMV with pressure support |
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A breath that is triggered, limited, and cycled by the ventilator is what kind of breath? |
Mandatory |
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A breath that is patient triggered, pressure targeted, and time cycled is what kind of breath? |
Assisted |
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What type of pressure time scalar is this? |
AC/PC AKA PC-CMV |
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What type of pressure time scalar is this? |
PC-IMV with pressure support |
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What additional setting can be used in addition to IMV to assist in facilitation weaning from a mechanical ventilator? |
Pressure support |
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What happens to peak pressures and measured VT during PC-CMV when the lung compliance decreases? |
Peak pressure increases Measured VT decreases |
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How do you calculate average VT from VE and RR? |
VT = VE / frequency |
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How do you calculate TI from VT and flow? |
TI = VT / flow |
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I:E ratio calculation |
I:E = (TI / TI) / (TE / TI) |
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How to calculate TE |
TCT = TI + TE TE = TCT - TI |
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Calculation of VE |
VE = VT x frequency |
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What will happen to gas exchange, I:E ratio, and peak airway pressure when flow rates are set high? |
Shorter TI Increased peak pressures Longer TE = less chance air trapping |
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What will happen to gas exchange, I:E ratio, and peak airway pressure when flow rates are set low? |
Longer TI Decreased peak pressures Shorter TE = greater chance air trapping |
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What waveform pattern will provide the best mean airway pressure delivered to the lung? |
Descending ramp |
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How to calculate initial VT range settings |
IBW (male) = 106 + 6(H-60) IBW (female) = 105 + 5(H-60) Initial VT Low = IBW x 5ml/kg Initial VT High = IBW x 8ml/kg |
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Calculation of VE from BSA |
VE male = 4 x BSA VE female = 3.5 x BSA |
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What waveform best improves distribution of gas in the lungs? |
Descending ramp |
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What are the initial range settings for RR and PEEP |
RR = 10-18bpm PEEP = 0-5cmH2O |
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The initial inspiratory pressure should be set at what level when changing from the control variable from VC to PC? |
Initial setting of 10-15cmH2O OR Set to VC Pplat |
