When a tension pneumothorax occurs during positive pressure ventilation,how will the cardiac output and blood pressure affected?
A) Both will decrease
B) Both will increase
C) The cardiac output will increase but the BP will decrease
D) The BP will increase but the BP will decrease

Question

Quizplus · Accepted Answer

During a tension pneumothorax, air enters the pleural space and compresses the lung, causing an increase in intrathoracic pressure. Positive pressure ventilation exacerbates this condition by further increasing the pressure within the thorax. This increased intrathoracic pressure causes a decrease in venous return to the heart, resulting in a decrease in cardiac output. Additionally, the compression of the lung may impede blood flow to the affected side of the heart, leading to a further decrease in cardiac output. The decrease in cardiac output, coupled with the increased intrathoracic pressure, leads to a decrease in blood pressure. Therefore, both cardiac output and blood pressure will decrease during positive pressure ventilation in the presence of a tension pneumothorax.

When a Tension Pneumothorax Occurs During Positive Pressure Ventilation,how Will