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mechanical ventilation exam 2024 with verified answers

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force x distance = - ANSWER: work pressure change X volume change is the function of ? - ANSWER: work PSV - ANSWER: often used in conjunction with IMV, but can be used as a primary mode of ventilation With PSV patient dictates? - ANSWER: F, IFR, TI, VT Clinician sets what in PSV - A...

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  • June 23, 2024
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  • 2023/2024
  • Exam (elaborations)
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mechanical ventilation exam 2024 with
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force x distance = - ANSWER: ✔✔work



pressure change X volume change is the function of ? - ANSWER: ✔✔work



PSV - ANSWER: ✔✔often used in conjunction with IMV, but can be used as a primary mode of
ventilation



With PSV patient dictates? - ANSWER: ✔✔F, IFR, TI, VT



Clinician sets what in PSV - ANSWER: ✔✔Pressure support level, Trigger sensitivity, Optimal elevated
baseline pressure (CPAP)



With PSV Every breath is? - ANSWER: ✔✔patient triggered, pressure-limited, and flow-cycled



↑PSV →↑VT → =? - ANSWER: ✔✔↓WOB



↓PSV→↓VT→ =? - ANSWER: ✔✔↑WOB or acceptable WOB



Weaning PSV - ANSWER: ✔✔drop pressure 2-4 cm H20



at a PSV of 5-8 cm H2O - ANSWER: ✔✔extubation is possible



Volume Support - ANSWER: ✔✔•Form of PC ventilation with adaptive breath targeting



Volume support (VS) - ANSWER: ✔✔•PSV with a targeted VT•

, VS mechanism of action - ANSWER: ✔✔•Initially, a test pulse at 10 cm H20 above PEEP is delivered

•Compliance and exhaled VT are measured

•Automatic adjustment of PS level or ¯ on a breath-to-breath basis to achieve targeted VT



Volume-Support Ventilation (VSV) - ANSWER: ✔✔Spontaneous mode

•Every breath

•Patient-triggered

•Pressure-limited

•Flow-cycled•Flow-cycled



PRVC (pressure regulated volume control) vent names - ANSWER: ✔✔•Servo-i, Servo u, Yvaire AVEA



•Adaptive targeting scheme "APC" does what? - ANSWER: ✔✔Auto adjusts pressure between breaths
to reach targeted VT in response to varying patient conditions



•Mechanism of action with Servos - ANSWER: ✔✔•Test breath VT is delivered with inspiratory hold and
Pplat is assessed

•Measure Pplat is given for next breath

•Exhaled VT is compared to target VT

•Inspiratory pressure is regulated to provide clinician set VT from breath-to-breath



PRVC Volume-Targeted Pressure Controlled Breaths - ANSWER: ✔✔•Delivered VT is measured and
compared with target VT

•PC gradually or ¯ until target VT is reached

•+- 3 cm H20 increments

•Provides stable VT with changes in compliance, resistance, pt effort



PRVC Patient-triggered or Time-triggered Breaths - ANSWER: ✔✔•A/C or IMV breaths

•Assisted if triggered by patient

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