If for any reason the uterus starts to be reduced prematurely it is called as a uterus hypertone. Danger of a hypertone of a uterus consists that it can lead to a spontaneous abortion. Thus the hypertone can arise both on early, and on late terms of pregnancy. If the hypertone is expressed slightly, the woman does not feel pressure of a uterus, the doctor can be limited naznachenime preparations, snimabshchih spasms of smooth muscles and soothing.

However if painful sensations are obviously expressed, hospitalisation is inevitable. Otherwise the woman can lose the child. It is necessary to know, that after 32 weeks of pregnancy not strong reductions of a uterus are a norm variant.