7c682e55_RSES__abnormal_uterine_actions__CONSTRICTION_RING
[0] Vaginal examination [RETRACTION RING] o Lower segment is very much pressed by the forcibly driven presenting part o Ring cannot be felt vaginally o Features are present [CONSTRICTION RING] 
o The lower segment is not pressed by the presenting part o Ring is felt usually above the head o Features of obstructed labour are absent
A GUIDE FOR NURSES: abnormal uterine actions
CONSTRICTION RING