In which of the following situations is obtaining a chest radiograph least useful?

Question

Quizplus · Accepted Answer

A chest radiograph is least useful when the static pressure drops by 2 cm H2O during controlled mechanical ventilation (CMV) as this change is often too minor and nonspecific to warrant a chest X-ray. In contrast, chest radiographs are very useful in confirming proper placement of medical devices (like after intubation or central venous pressure line placement) and in evaluating sudden deteriorations in a patient's oxygenation status.

In Which of the Following Situations Is Obtaining a Chest