Twenty women were treated with Lamicel tents for 4 h and 20 women for 16 h before vacuum aspiration in the first trimester of pregnancy. The shorter time of treatment was as effective as the longer time with respect to cervical softening and dilatation. In comparison with an untreated control group, Lamicel treatment was followed by an increased collagenolytic activity and increased sensitivity to prostaglandin E2 of the cervical smooth muscle.
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Norström et al. (1988) studied this question.
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