APVcmv - Adaptive Pressure Ventilation - Controlled Mechanical Ventilation Summary
Most Similar to PRVC - Pressure Regulated Volume Control
Basic Set Parameters:
 1) Rate
 2) Target Tidal Volume
 3) PEEP
 4) FiO2
What's Happening
 - The ventilator adapts to the exhaled volume and in doing so assesses plateau pressure and static compliance.
 - The vent finds the correct pressure to deliver the desired volume. Baseline pressure is constant
Best for:
 - Passive or partially active patients
 - The more work the patient does the less support it gets from the ventilator.
 - May be more comfortable for patients
Downside:
 - May be uncomfortable for patients with a strong resp drive or neurogenic breathing patterns
 - Active patients may get more than set target minute ventilation (hyperventilate)
Troubleshooting - If hyper/hypo-ventilating:
 - Confirm the height/ IBW are correct as the target tidal volume may be too high / too low (respectively)
 - Can adjust the I:E ratio, patient trigger and sensitivity, rise time
Assess: Pressures generated by vent to hit the target volume

Casey Albin, MD @caseyalbin

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