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The “stacking” of breaths, which often is seen in mechanically ventilated patients with severe airway obstruction, can be caused by:

On a PA film, what number of posterior ribs visible above the diaphragm indicates a good inspiratory effort?

Which equation is used to determine airway resistance:

Given : corrected tidal volume = 650ml, PIP = 32 cm H2O, Calculate dynamic compliance.

What is the significance of the silhouette sign?

Acute respiratory distress syndrome (ARDS), pneumonia, and pulmonary edema are likely to cause a decrease in lung compliance. This is evidenced in a mechanically ventilated patient by an increase in:

Given : corrected tidal volume = 600 ml, PIP = 35 cm H2O, PPlat = 25 cm H2O and PEEP= 5 cm H2O. Calculate dynamic compliance.

Which of the following is least likely to cause an increase in a patient’s tidal volume?

Patients who are ventilated with excessively large tidal volumes are at risk for:

Given: flow = 8 l/min, the inspiratory time = 0.4 sec. Calculate the delivered tidal volume based on these settings on a constant flow time-cycled ventilator.