The puncture process of thoracentesis needle drainage

①Determine the puncture site and position it

②Local disinfection and draping

③ Local anesthesia at the puncture site, generally 2% lidocaine

④Use a puncture needle to puncture. Pay attention to draw back while puncturing during puncture. If gas is drawn back, the puncture can be stopped.

⑤Use the Seldinger method to insert the thoracic catheter

⑥Fix the chest tube and connect the water-sealed bottle

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