The Volume Delivered by a Pressure-Limited Ventilator Will Decrease Under

The volume delivered by a pressure-limited ventilator will decrease under which of the following conditions?
1) The patient's lung or thoracic (chest wall) compliance falls.
2) Airway resistance rises (inspiratory time <3 times the time constant) .
3) The patient tenses the respiratory muscles during inspiration.
4) Airway resistance rises (inspiratory time >3 times the time constant) .

A) 1 and 3 only
B) 1, 3, and 4 only
C) 3 and 4 only
D) 2, 3, and 4 only

Correct Answer:

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