Kazan medical journalKazan medical journal0368-48142587-9359Eco-Vector5967510.17816/kazmj59675Research ArticleOn the frequency of contractions according to external hysterography in different course of laborKrementsovYu. G.<p>Obstetric department, graduate student</p>info@eco-vector.comInstitute of Obstetrics and Gynecology of the USSR Academy of Medical Sciences1401196546152532901202129012021Copyright © 1965, Krementsov Y.G.1965<p>Assessment of labor activity both in the normal course of labor and in case of various kinds of complications is carried out in practical obstetrics according to 3 indicators: frequency, duration and intensity of contractions.</p>Kazan Medical archiveКазанский медицинский архив