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This study aimed to compare the effect of misoprostol using vaginal or sublingual routes on the non-pregnant uterine cervix prior to minor gynaecological procedures. One hundred and forty women were randomised 1:1 into two groups: A and B. Group A received misoprostol 400 mcg vaginally and pyridoxine 40 mg sublingually and Group B received misoprostol 400 mcg sublingually and pyridoxine 40 mg vaginally 4 h prior to procedure. The outcomes studied were maximum size of Hegar’s dilator that could be inserted into the cervix without any resistance, ease of dilatation, need and time required for further dilatation, side effects and complications. Baseline cervical dilatation was significantly more in Group A than Group B. Need for further dilatation and time required for further dilatation were also significantly less in Group A than Group B. Thus, we conclude that vaginal misoprostol is more effective than sublingual misoprostol in cervical priming before minor gynaecological procedures.  Clinical Trial Registration Number:www.ctri.nic.in ; CTRI/2018/07/015080IMPACT STATEMENTWhat is already known on this subject?  Cervical priming has been shown to result in shorter operative time, easier mechanical dilatation, reduced incidence of complications and blood loss when used prior to surgical abortion and has been recommended as a standard practice in various national and international guidelines for safe abortion practices. Misoprostol has many advantages over other ripening agents like osmotic dilators, other prostaglandins and mifepristone. Misoprostol can be given through oral, sublingual, vaginal, buccal and rectal routes. Use of misoprostol has been found to improve cervical dilatation, reduce need of further dilatation and ease of dilatation without many complications when compared to placebo for cervical priming of non-pregnant cervix. Studies comparing vaginal and sublingual routes have shown no significant difference for cervical ripening in pregnant women.What the results of this study add?  We found that vaginal misoprostol for cervical priming was more effective than sublingual misoprostol in reaching a higher baseline cervical dilatation, with reduced need and time required for further dilatation before minor gynaecological procedures, although the ease of dilatation was similar in both groups. This effect of vaginal misoprostol was more marked in premenopausal women.What the implications are of these findings for clinical practice and/or further research?  The results of our study are at variance with other studies done on use of misoprostol via the vaginal or sublingual routes, and hence it is imperative that large multi-center studies be performed to bring about consensus on the topic. What is already known on this subject?  Cervical priming has been shown to result in shorter operative time, easier mechanical dilatation, reduced incidence of complications and blood loss when used prior to surgical abortion and has been recommended as a standard practice in various national and international guidelines for safe abortion practices. Misoprostol has many advantages over other ripening agents like osmotic dilators, other prostaglandins and mifepristone. Misoprostol can be given through oral, sublingual, vaginal, buccal and rectal routes. Use of misoprostol has been found to improve cervical dilatation, reduce need of further dilatation and ease of dilatation without many complications when compared to placebo for cervical priming of non-pregnant cervix. Studies comparing vaginal and sublingual routes have shown no significant difference for cervical ripening in pregnant women. What the results of this study add?  We found that vaginal misoprostol for cervical priming was more effective than sublingual misoprostol in reaching a higher baseline cervical dilatation, with reduced need and time required for further dilatation before minor gynaecological procedures, although the ease of dilatation was similar in both groups. This effect of vaginal misoprostol was more marked in premenopausal women. What the implications are of these findings for clinical practice and/or further research?  The results of our study are at variance with other studies done on use of misoprostol via the vaginal or sublingual routes, and hence it is imperative that large multi-center studies be performed to bring about consensus on the topic.

A randomised comparative study of sublingual and vaginal misoprostol for cervical priming before minor gynaecological procedures