Which of the following studies is gradually replacing scanning for the diagnosis of pulmonary embolus?

A patient’s airway pressures are as follows: PIP = 45 cm H2O and the PPlat = 15 cm H2O. The ventilator constant flow rate is set at 60L/min (1L/sec).

If auto-PEEP is present, it is most likely to be detected if the expiratory limb of the patient circuit is occluded at what point in the cycle?

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:

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