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Uptodate Reference Title
Z-track technique for needle insertion during paracentesis
Z-track technique for needle insertion during paracentesis
A: Relative locations where the needle will enter the skin and the peritoneal cavity. B: The skin is pulled down, and the needle is then advanced in 5 mm increments, pulling the plunger back a few millimeters with each advancement to see if any blood or ascitic fluid is aspirated. C: The skin is released, returning the skin and peritoneal cavity entry sites to their original positions.