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| * Mechanical ventilation |
| | #178724 |
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A pt is in ICU and placed on mechanical ventilation. The physician sets the ventilator to a mode which delivers a preset volume of gas at a preset rate plus the pt can initiate spontaneous breaths between mechanical breaths. The machine does not help the pt with the extra breaths. Which mode of mechanical ventilation does this describe?
A.)controled mechanical ventilation
B.)assist control ventilation
C.)intermittent mandatory ventilation
D.)synchronized intermittent mandatory ventilation
E.)continuous positive airway pressure |
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| * Re:Mechanical ventilation |
| #740516 |
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answer is C. In contolled ventilation machine delivers preset volume of gas at a preset rate. Pt. has no respiratory effort so pt can not initiate spontaneous respirations. It is often used during general anashesia and drug overdose.In assist controlled ventilation, usually used when pt is awake. Machine senses pt attempt to breath and awards with TV. If no respirations machine delivers breaths according to the backup rate, there are no spontaneous breaths in between mechanical breaths. In Intermittent mandatory machine delivers preset volume of gas at preset rate but unlike controlled ventilation pt can initiate spontaneous breaths in between mechanical breaths. The machine ,however, does not help with the extra breaths. In synchronized intermittent mandatory ventilation the ventilator senses the pt breathing effort and trys to synchronize with pt to deliver a mechanical breath when pt has initiated a spontaneous breath. Pt can also initiate spontaneous unsopported breaths in between mechanical breaths. If no breaths from pt backup rate is delivered. This is used mor oftan than IMV because it is more comfortable to pt. |
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