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<br>3. The skin area is washed with an antiseptic
→Technique: - <br>
:*If the fluid space is wide enough, the thickness of the thoracic wall can be measured in order to subsequently perform anesthesia and catheter insertion without ultrasound guidance.
:*The puncture location can be marked by a skin impression (such as a pen with withdrawn nib), or with a skin marker (which may, however, disappear during washing).
<br>4. Wear at least sterile gloves, and use sterile coverage on the ultrasound probe
<br>5. Preferably use a pigtail catheter, generally of French gauge around 7 - 10, and fixate a cannula inside it
