Which of the following is a contraindication for CPAP use?

The correct answer is that hypotension (less than 90 mmHg) is a contraindication for CPAP use. The rationale behind this is that the application of Continuous Positive Airway Pressure (CPAP) can further decrease blood pressure in patients who are already hypotensive. CPAP increases intrathoracic pressure, which can reduce venous return to the heart, potentially exacerbating hypotension. It is crucial to ensure that any patient receiving CPAP has stable hemodynamics; otherwise, the risks may outweigh the benefits.

In contrast, patients who are awake and cooperative, have an oxygen saturation greater than 95%, and possess normal respiratory drive are typically suitable candidates for CPAP therapy. These factors indicate that the patient is able to actively participate in their own care, has adequate oxygenation, and is capable of initiating breaths, all of which are important considerations for the successful application of CPAP.