Current possibilities and prospects of tocolytic therapy

The urgency of the problem of preterm birth (PB) is because of its high prevalence and neonatal mortality. The effects of PB on the fetus are often fatal, and PB accounts for 70% of neonatal mortality and 36% of infant mortality. Severe neurological deficits (e.g., cerebral palsy, epilepsy, intraventricular hemorrhages, retinopathy, blindness, hearing loss, delayed neuropsychiatric and motor development) occur in 68% of surviving premature infants. Additionally, children born prematurely have a high risk for purulent septic diseases. The metabolic consequences of prematurity cause diseases such as metabolic syndrome and hypertension. Thus, tocolytic therapy is a crucial therapeutic measure in obstetrics. However, most known and actively used tocolytic drugs induce insufficient effect for long-term prolongation of pregnancy or have serious side effects. Currently, there is a search for new tocolytics to obtain safe, adequate, and long-term effects. This review examines promising and relevant drugs that may be used in routine obstetric practice. Scientific articles, meta-analyses, and systematic reviews from the databases PubMed, Embase, Web of Science, and Google Scholar, and RSCI were analyzed. For the analysis, publications in English and posted no more than 5 years before the study was conducted were selected, except for fundamental works with a longer publication period.