Oxytocin antagonists for the management of preterm birth: a review

Ihab M Usta1, Ali Khalil, Anwar H Nassar

  • 1Department of Obstetrics and Gynecology, American University of Beirut Medical Center, Beirut, Lebanon.

Insights

Preterm birth remains a major concern. Oxytocin antagonists like atosiban show promise as effective tocolytics with a favorable safety profile for managing preterm labor.

Area of Science:

  • Obstetrics and Gynecology
  • Pharmacology
  • Neonatal Medicine

Background:

  • Preterm birth is the primary cause of neonatal morbidity and mortality.
  • Incidence of preterm birth is 12.7%, with no decrease in four decades despite interventions.
  • Current tocolytic therapies have limitations and side effects.

Purpose of the Study:

  • To review the literature on oxytocin antagonists for preterm labor.
  • To evaluate the pharmacokinetics, administration, and clinical utility of oxytocin antagonists.
  • To emphasize the safety profile of oxytocin antagonists compared to traditional tocolytics.

Main Methods:

  • Literature review of available studies on oxytocin antagonists.
  • Analysis of pharmacokinetic data.
  • Assessment of clinical trial results for efficacy and safety.

Main Results:

  • Oxytocin antagonists, specifically atosiban, are presented as an alternative tocolytic agent.
  • Evidence suggests effectiveness in acute and maintenance tocolysis.
  • Oxytocin antagonists appear to have fewer side effects than traditional tocolytics.

Conclusions:

  • Oxytocin antagonists offer a potentially safer and effective option for preterm labor management.
  • Further research and clinical application of oxytocin antagonists are warranted.
  • Atosiban is a key example of oxytocin antagonists in tocolysis.

Related Concept Videos

Intrauterine Drug Delivery Systems01:21

Intrauterine Drug Delivery Systems

Controlled-release systems for intravaginal and intrauterine drug delivery have been developed primarily for the administration of contraceptive steroid hormones. These delivery routes circumvent first-pass hepatic metabolism, thereby enhancing bioavailability and allowing for reduced systemic dosages compared to oral administration. Such approaches contribute to improved therapeutic efficacy and patient compliance, particularly in long-term contraceptive regimens.Intravaginal Drug Delivery...
Chemotherapy-Induced Nausea and Vomiting: 5-HT3 Receptor Antagonists01:27

Chemotherapy-Induced Nausea and Vomiting: 5-HT3 Receptor Antagonists

5-HT3 receptor antagonists, such as dolasetron, granisetron (Kytril), ondansetron (Zofran), and palonosetron (Axoli), are crucial in managing chemotherapy-induced nausea and vomiting (CINV) and postoperative nausea. These drugs selectively block 5-HT3 receptors in the visceral vagal and spinal afferent nerves, chemoreceptor trigger zone, and the vomiting center. They have a rapid onset of action and can be given as a single dose before chemotherapy. Ondansetron and granisetron, in particular,...
Cardiopulmonary Resuscitation IV: Pharmacological Management01:25

Cardiopulmonary Resuscitation IV: Pharmacological Management

Pharmacologic intervention is crucial in treating cardiac arrest patients during ACLS or Advanced Cardiovascular Life Support. The ACLS algorithms guide the administration of specific drugs based on the patient's cardiac arrest rhythm, which includes pulseless ventricular tachycardia (VT), ventricular fibrillation (VF), asystole, and pulseless electrical activity (PEA).EpinephrineIndication: Epinephrine is the first-line drug for all cardiac arrest rhythms.Mechanism of Action: Epinephrine...
Adrenergic Antagonists: ɑ and β-Receptor Blockers01:31

Adrenergic Antagonists: ɑ and β-Receptor Blockers

Third-generation β-blockers, such as labetalol and carvedilol, represent a significant advancement in managing cardiovascular conditions. Unlike conventional β-blockers, which can induce peripheral vasoconstriction, third-generation drugs block α1 adrenoceptors. This promotes vasodilation through several mechanisms, such as increased nitric oxide production, inhibition of calcium ion entry, opening of potassium ion channels, and antioxidant action. Labetalol, for instance, is clinically...
Parenteral Anesthetics: Overview01:24

Parenteral Anesthetics: Overview

Intravenous anesthetics are drugs administered parenterally to induce anesthesia or sedation. Propofol is a widely used agent formulated as a 1% emulsion in soybean oil, glycerol, and egg phosphatide. It induces rapid anesthesia primarily due to its rapid distribution from the bloodstream to target tissues and is metabolized in the liver. However, it can cause significant pain on injection and hypertriglyceridemia. Fospropofol, a water-based prodrug of propofol, lacks these adverse effects.
Local Anesthetics: Clinical Application as Epidural Anesthesia01:29

Local Anesthetics: Clinical Application as Epidural Anesthesia

Epidural anesthetics are administered in the fat-filled epidural space, the outermost part of the spinal canal. This technique is commonly employed for pain management and anesthesia during lower abdomen and pelvis surgeries or labor and delivery.
Since epidural anesthetics can be infused through an epidural catheter, all types of drugs, including short-acting ones, can be administered. Chloroprocaine and lidocaine are examples of short and long-duration anesthetics, respectively. Bupivacaine...