Example of a thoracentesis kit: the kit includes 3 needles of different caliber, a connection system with a 3-way tap, a syringe for aspiration, and a collection bag. On the left side, there is a sterile probe cover and a sterile gel pack. In the best operating setting with a mobilizable and cooperative patient, the patient sits on the edge of the bed and hugs a pillow; this movement allows the intercostal spaces to open more easily. A sterile field with a sterile drape is set up. The operator wears sterile gown and gloves. In this figure, the needle insertion site has already been identified through ultrasound evaluation, and local disinfection is carried out with povidone iodine by using sterile gauze.