During inspiration in PCV, which behavior is shown in the volume graph?
Understand the Problem
The question is asking about the specific behavior of a volume graph during the process of inspiration in Positive Pressure Controlled Ventilation (PCV). It seeks to identify which of the listed options correctly describes the characteristic graph behavior during this phase.
Answer
Volume graph shows steady increase during inspiration in PCV.
During inspiration in pressure-controlled ventilation (PCV), the volume graph shows a steady increase in volume as the set inspiratory pressure is maintained throughout the breath.
Answer for screen readers
During inspiration in pressure-controlled ventilation (PCV), the volume graph shows a steady increase in volume as the set inspiratory pressure is maintained throughout the breath.
More Information
In pressure-controlled ventilation, the pressure is set and constant, causing the volume to rise steadily during inspiration. The shape of the volume-time waveform is linear upward.
Tips
A common mistake is confusing volume-controlled ventilation with pressure-controlled ventilation, where in the former, the volume is set, and pressure changes, leading to different graph patterns.
Sources
- The Basics of Ventilator Waveforms - PMC - pmc.ncbi.nlm.nih.gov
- Understanding Ventilator Graphics - AARC - archive2023.aarc.org
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