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?

Which of the following statements would be helpful in determining a patient’s location of pain?

A patient, who is orally intubated, requires frequent endotracheal suctioning through an 8.0- mm ET tube with a 12 Fr. catheter at a suction pressure of 135 mm Hg. During suctioning, the following ECG tracing can be seen on the monitor. Which of the following should the respiratory therapist recommend? 91.png

A patient has idiopathic pneumonia with consolidation in the right lower lobe. The physician suspects a bacterial infection. Which of the following will provide conclusive data to rule out the physician’s suspicions?