Page 111 - Clinical Application of Mechanical Ventilation
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Classification of Mechanical Ventilators 77
Self-Assessment Questions
1. The primary forces that the ventilatory muscles must overcome include:
I. resistive forces III. elastic forces
II. compliance forces IV. inductive forces
A. I and II. C. II and III.
B. I and III. D. II and IV.
2. When the ventilator assumes all of the ventilatory work, this is termed:
A. partial ventilatory support. C. incomplete ventilatory support.
B. full ventilatory support. D. no ventilatory support.
3. A ventilator that measures flow and uses that measurement to control the output of the ventilator is
termed a:
A. pressure controller. C. volume controller.
B. flow controller. D. time controller.
4. When the ventilator delivers a mechanical breath in response to the patient’s inspiratory effort, the
mechanical breath is called:
A. time-triggered. C. flow-triggered.
B. volume-triggered. D. pressure- or flow-triggered.
5. If pressure rises to a preset level and is maintained at that level until inspiration ends, this is termed a:
A. time limit. C. pressure limit.
B. volume limit. D. flow limit.
6. An alarm that results from the loss of 50 psi gas pressure is termed a(n):
A. input power alarm. C. output alarm.
B. control circuit alarm. D. gas pressure alarm.
7. PEEP and CPAP are modes in which the pressure is set:
A. at the baseline pressure. C. below the baseline pressure.
B. above the baseline pressure. D. 5 to 10 cm H O above the baseline pressure.
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8. In volume-controlled ventilation, the peak inspiratory pressure increases when the patient’s:
A. compliance or airway resistance is increased.
B. compliance or airway resistance is decreased.
C. compliance is increased or airway resistance is decreased.
D. compliance is decreased or airway resistance is increased.
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