Q: Whats the danger of being very close to inguinal ligament while putting femoral venous or arterial central line?
Answer: Possible development of retroperitoneal hematoma and decrease ability to compress the bleeding site. Retroperitoneal hematoma is a serious and potentially very fatal complication after femoral cannulation. High femoral puncture (particularly if accompanied by coagulopathy), increases the risk of hematoma formation. Its always wise to stay well below inguinal ligament (atleast 3-4 cm) so developing hematoma is visible and can be compressed.
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