Culdocentesis

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Cervix needle sample

Culdocentesis

Female reproductive anatomy

Culdocentesis is a procedure that checks for abnormal fluid in the space just behind the vagina (cul-de-sac).

First, a pelvic examination is done. Then, the cervix is grasped with an instrument and lifted slightly. A long, thin needle is inserted through the vaginal wall (just below the uterus). A sample is taken of any fluid found in the space, and the needle is then withdrawn.

You may be asked to walk or sit for a short time before the test is done.

There may be an uncomfortable, cramping feeling when the cervix is grasped. There is a sharp, brief pain as the needle is inserted.

This procedure is done when pain occurs in the lower abdomen and pelvic regions, and other tests suggest that fluid may be present in the cul-de-sac. This test may be done when a ruptured ectopic pregnancy or ovarian cyst is suspected. The test is now performed infrequently because of the availability and effectiveness of ultrasound examinations to detect fluid in the cul-de-sac.

Review Date: 05/15/2006
Reviewed By: Audra Robertson, MD, Department of Obstetrics and Gynecology, Brigham and Women's Hospital, Boston, MA. Review provided by VeriMed Healthcare Network