extraction

[ek-strak´shun]

1. the process or act of pulling or drawing out.

2. the preparation of an extract.

breech extraction extraction of an infant from the uterus in cases of breech presentation.

flap extraction removal of a cataract by making a flap in the cornea.

menstrual extraction a form of induced abortion in which a flexible cannula is inserted through an undilated cervix for the purpose of removing the fertilized embryo and endometrium. The cannula is attached to a syringe, which is used to aspirate the uterine contents and induce the onset of the “missed period.” This technique is not always effective, and sometimes a second procedure is required. It should be done within two weeks of a missed menstrual period.

serial extraction the selective extraction of primary teeth during an extended period of time to allow autonomous adjustment.

tooth extraction forcible removal of a tooth; called also odontectomy.

vacuum extraction removal of the uterine contents by application of a vacuum, done either for delivery of a viable fetus or for an abortion.

vacuum extraction

Obstetrics Operator-assisted delivery in which suction is applied to the skull and the fetus delivered vaginally Complications Brachial plexus injury due to shoulder dystocia, scalp injuries, intracranial–especially, subgaleal–hemorrhage due to tentorial tearing and skull fractures, CNS depression, convulsions, mechanical ventilation. See Operative vaginal delivery. Cf Forceps.

vacuum extraction

A method of assisting childbirth used as an alternative to FORCEPS DELIVERY. A cup-like device is applied to the baby's scalp and firmly secured by suction. Traction can then be applied via a short chain and handle. The equipment is known as a ventouse.