What is a potential complication during subclavian venous catheter placement if high pressure alarms are activated?

During subclavian venous catheter placement, the activation of high pressure alarms can indicate that there is resistance to blood flow, which may lead to complications such as a tension pneumothorax. This occurs if there is inadvertent injury to the pleura during the procedure. If air enters the pleural space and cannot escape, it can create increasing pressure, leading to respiratory distress and cardiovascular compromise. The presence of high pressure alarms may suggest that there is a blockage or constriction, which could lead to excess pressure and consequently a tension pneumothorax if the procedure is not managed properly.

A tension pneumothorax is particularly concerning in this context, as it constitutes a medical emergency requiring immediate intervention to relieve the pressure and restore normal respiratory and hemodynamic function. Awareness of this complication is crucial for those performing the procedure, ensuring they maintain vigilance regarding any alarms that indicate abnormal conditions during catheter placement.