title: [Duration of left ventricle systolic phases in normal pregnancy and labor].
mesh_terms: D000293:Adolescent; D000328:Adult; D005260:Female; D006801:Humans; D007743:Labor, Obstetric; D009200:Myocardial Contraction; D011247:Pregnancy; D011261:Pregnancy Trimester, First; D011262:Pregnancy Trimester, Second; D011263:Pregnancy Trimester, Third; D013997:Time Factors
vernacular_title: Otsenka prodolzhitel'nosti faz sistoly levogo zheludochka u zdorovykh beremennykh i rodil'nits