Acute Tocolysis Using a Single Bolus Dose of Atosiban for Preterm Labor Management: A Prospective Study

Abstract

Background: Preterm labor poses a significant challenge within obstetrics, carrying the potential for diverse complications for both maternal and neonatal well-being. Extensive clinical data indicates that atosiban stands as a secure and well-tolerated therapeutic alternative, exhibiting fewer adverse effects on both the mother and fetus compared to other tocolytic treatments. The investigation aimed to assess the feasibility of achieving optimal medical care by employing a solitary atosiban bolus dose. This approach holds the promise of mitigating the necessity for hospitalization, potentially enabling outpatient management of the condition. Aim: The purpose of the study was to assess the efficacy and safety of using a single bolus dose of atosiban to delay premature delivery. Material and Methods: The study included 75 patients experiencing symptoms of preterm labor. These patients were administered a single bolus dose of atosiban (6.5 mg/0.9mL). The study was conducted between August 2019 and July 2023. Results: The study successfully used a single bolus dose of atosiban to delay delivery by up to 48 hours, enabling corticosteroid prophylaxis. The participants' average gestational age was 32.1 weeks. Atosiban effectively delayed delivery in 68% of patients for an average of 13.3 days, with a range of 0-62 days. No adverse effects were reported by either mothers or fetuses during the study period. Conclusion: The study findings suggest that a single bolus dose of atosiban is an effective and safe treatment option for delaying preterm labor. The treatment provides short-term relief for an average of 13 days, with potential benefits over other tocolytics like isoxsuprine, ritodrine, and nifedipine due to fewer side effects. The intravenous bolus dose of atosiban has a quick onset and long-lasting effects, making it convenient for both patients and physicians. The approach is cost-effective and could be repeated after a few days if necessary. Overall, the study demonstrates the potential of using a single bolus dose of atosiban as an outpatient treatment to manage preterm labor effectively, offering benefits in terms of safety, convenience, and cost.