Human Reproduction Update, Vol.6, No.5 pp.442-448, 2000
© European Society of Human Reproduction and Embryology 2000; all rights reserved
Preparation of the cervix for surgical termination of pregnancy in the first trimester
1 Department of Obstetrics & Gynaecology, National University Hospital, Singapore
To whom correspondence should be addressed at: K. Singh, Department of Obstetrics & Gynaecology, National University Hospital, Lower Kent Ridge Road, Singapore 119074. Phone: +65–772 4261; Fax: +65 779 4753; e-mail: obgkuldi{at}nus.edu.sg
Abstract
Worldwide, surgical vacuum aspiration is the method of choice of terminating first trimester unwanted pregnancy. Cervical priming prior to surgical evacuation reduces the risks of cervical injury by making the cervix softer and easier to dilate. Over the years, a number of effective methods of cervical priming have became available: osmotic dilators; antiprogesterone and prostaglandins. Of these, prostaglandins remain the most widely used method of cervical preparation. However many of the natural and synthetic analogues of prostaglandins are either expensive or associated with troublesome side-effects. More recently, misoprostol, a synthetic 15-deoxy-16 hydroxy 16-methyl analogue of naturally occurring prostaglandin E, used in the manangement of peptic ulcers, has established a lead for cervical priming in terms of availability, ease of administration, cost and effectiveness. In fact it appears that both oral and vaginal misoprostol given at dosages of 400 µg are effective for cervical priming when administered 3 h prior to surgical vacuum aspiration. Now that the use of misoprostol for cervical priming has been validated, its widespread use in gynaecological practice is expected.
Key words: misoprostol / pre-abortion cervical priming / pregnancy termination