Which of the following would be most beneficial in resolving microatelectasis?

A patient has a balloon-tipped, flow-directed catheter in place in the pulmonary artery. Which of the following will be obtained when extracting blood from the distal lumen of the pulmonary artery catheter?

An 84-kg (185-lb) 6-ft 1-in (185-cm) male is receiving mechanical ventilation by a volume-controlled ventilator in the assist/control mode on the following settings:  Mandatory rate   16     VT 600 mL   FIO2 0.5   PEEP 10 cm H2O     ABGs     pH 7.46   PaCO2 34 mm Hg   PO2 100 mm Hg   HCO3- 24 mEq/L   BE 0 mEq/L  Which of the following represents the most appropriate action?

What is the primary purpose for a helium dilution test?

The physician orders a change in I:E ratio from 1:2 to 1:4 for a COPD patient receiving volume-controlled mechanical ventilation. Which of the following accommodates the physician’s request if the mandatory rate is not changed?

The high-pressure alarm is sounding on a patient receiving volume controlled ventilation. The respiratory therapist should FIRST

A patient’s chest radiograph reveals an enlarged heart, whose shadow occupies two thirds of the chest cavity from side-to-side. With which of the following conditions would this finding be most closely associated?

A respiratory therapist is preparing to assist in a cardioversion procedure on a patient with atrial tachycardia. Which of the following should NOT be part of that preparation?

A patient is in the emergency room (ER) with an oxygen saturation of 86% on a non-rebreather mask. The respiratory therapist observes paradoxical chest movement on the left side. Trachea is mid-line. Which of the following can the therapist conclude?

A patient with ARDS has recently been switched to pressure control ventilation (PCV). Which of the following alarms would be of vital importance to set properly?