Does thoracentesis require a signed informed consent?

A signed informed consent is required for thoracentesis because it is considered an invasive procedure that involves entering a body cavity, specifically the pleural space. This invasion into the body carries risks, such as injury to surrounding structures (including the lungs), bleeding, infection, and potential for pneumothorax. Obtaining informed consent ensures that the patient understands these risks, the purpose of the procedure, and what to expect during and after the process, thereby empowering them to make an informed decision about their healthcare.

The requirement for consent in this context is rooted in the principles of patient autonomy and the ethical obligation to involve patients in their own medical care. While some may categorize thoracentesis as a minor procedure compared to more invasive surgeries, the potential complications and the invasive nature of accessing the pleural space mandate a thorough consent process.