In which of the following types of ventilation can pleural pressure become positive during inspiration?
1) Positive-pressure ventilation
2) Spontaneous ventilation
3) Negative-pressure ventilation

Question

Quizplus · Accepted Answer

During positive-pressure ventilation, air is pushed into the lungs, increasing the pressure in the pleural space, which can become positive. In spontaneous and negative-pressure ventilation, the mechanism involves expanding the chest cavity, lowering the pressure in the pleural space to draw air in, typically not leading to positive pleural pressure during inspiration.

In Which of the Following Types of Ventilation Can Pleural