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Strategies to prevent premature births

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  1. Preterm birth affects approximately 1 in 10 babies globally, with significant health risks and long-term consequences.
  2. Identifying and addressing risk factors, such as previous preterm births, maternal age, and cervical insufficiency, is crucial for prevention.
  3. Comprehensive prenatal care, including early and regular check-ups, screening for infections, and lifestyle modifications, plays a vital role in preventing preterm births.

[WORLD] Premature birth remains a significant global health concern, affecting millions of infants and families worldwide. According to recent statistics, "Globally, an estimated 13.4 million babies were born prematurely, i.e. more than one in 10 babies, in 2020". This staggering number underscores the urgent need for effective prevention strategies and improved prenatal care. In this comprehensive guide, we'll explore the causes, risk factors, and prevention methods for preterm births, empowering expectant mothers and healthcare providers with the knowledge to safeguard infant health.

Preterm birth is defined as the birth of a baby before 37 completed weeks of pregnancy. Dr. Milton Lum, a renowned medical expert, explains that preterm births are categorized based on gestational age:

Preterm births are sub-categorised based on gestational age:

Extremely preterm – less than 28 completed weeks of pregnancy

Very preterm – 28 to less than 32 completed weeks, and

Moderate to late preterm – 32 to 37 completed weeks

Understanding these categories is crucial for assessing the potential risks and determining appropriate care strategies for premature infants.

The Impact of Preterm Birth

The consequences of premature birth can be severe and long-lasting. Dr. Lum notes, "About 900,000 died in 2019 from the complications of preterm birth, and many had lifetime disabilities of varying severity". This sobering statistic highlights the critical importance of prevention efforts and early intervention.

Premature infants often face numerous health challenges, including:

  • Respiratory difficulties
  • Feeding problems
  • Developmental delays
  • Vision and hearing impairments
  • Increased risk of infections

The earlier a baby is born, the higher the risk of complications. As Dr. Lum states, "The more preterm the birth is, the greater the likelihood of complications, disability and death".

Risk Factors for Preterm Birth

Identifying risk factors is crucial for preventing preterm births. A comprehensive review of clinical practice guidelines has revealed several key risk factors:

Strong Consensus Risk Factors

  • Previous preterm birth
  • Premature pre-labour rupture of membranes (PPROM) or mid-trimester pregnancy loss
  • Cervical surgery/excision
  • Low pre-pregnancy weight
  • Congenital uterine anomalies
  • Smoking during pregnancy
  • Maternal age (less than 18 years old or more than 35 years old)

Moderate Consensus Risk Factors

  • Multiple dilatation and curettage procedures after 13 weeks' gestation
  • High pre-pregnancy weight
  • Inter-pregnancy interval of less than 12 months

Understanding these risk factors can help healthcare providers and expectant mothers take proactive steps to reduce the likelihood of preterm birth.

Prevention Strategies for Preterm Birth

Preventing preterm birth requires a multifaceted approach involving both medical interventions and lifestyle modifications. Here are some key prevention strategies recommended by experts:

For the General Obstetric Population

  • Smoking cessation
  • Screening and treatment of asymptomatic bacteriuria
  • Treatment of symptomatic bacterial vaginosis and other lower genital tract infections
  • Vaginal progesterone for women with a short cervix
  • Cervical cerclage for women with very short cervix or cervical dilation prior to 24 weeks gestation
  • Consideration of cervical pessary for women with a short cervix

Dr. Lum emphasizes the importance of these preventive measures, stating, "There were recommendations for the prevention of preterm births in both the general and high-risk obstetric population".

For High-Risk Obstetric Population

  • Screening and treatment of bacterial vaginosis
  • Progesterone therapy for women with a history of spontaneous preterm birth
  • Cervical cerclage for women with specific risk factors
  • Abdominal cerclage for women with a history of trachelectomy or unsuccessful vaginal cervical cerclage

It's important to note that certain practices, such as activity restriction or bed rest, are not recommended for preventing preterm birth.

The Role of Prenatal Care

Regular prenatal care plays a crucial role in preventing preterm birth and ensuring the health of both mother and baby. Dr. Lum stresses the importance of early and consistent prenatal care, stating, "Get prenatal care early and throughout pregnancy".

Key aspects of prenatal care for preventing preterm birth include:

  • Regular check-ups and monitoring
  • Screening for infections and other risk factors
  • Nutritional counseling and supplementation
  • Management of chronic health conditions
  • Education on signs and symptoms of preterm labor

Innovations in Preterm Birth Prevention

Research in preterm birth prevention continues to evolve, with new strategies and interventions emerging. Some promising areas of research include:

  • Predictive biomarkers for preterm birth
  • Advanced imaging techniques for cervical assessment
  • Personalized progesterone therapy
  • Novel interventions for cervical insufficiency
  • Microbiome-based interventions

While these innovations show promise, more research is needed to fully understand their effectiveness and safety.

Global Initiatives and Awareness

World Prematurity Day, observed annually on November 17th, plays a crucial role in raising awareness about preterm birth. As Dr. Lum notes, "Its objective is to raise global awareness of the challenges and burdens of premature birth, which is the leading cause of death in children under five years".

The World Health Organization (WHO) has also taken significant steps to improve care for preterm infants. Dr. Lum highlights, "The World Health Organization (WHO) launched its guidelines on recommendations for the care of preterm or low birthweight babies on Nov 17, 2022". These guidelines provide 25 evidence-based recommendations for improving the survival and well-being of preterm and low birth weight babies.

Preventing preterm birth is a complex challenge that requires a collaborative effort from healthcare providers, researchers, policymakers, and expectant parents. By understanding the risk factors, implementing effective prevention strategies, and ensuring access to quality prenatal care, we can work towards reducing the global burden of premature birth.

As Dr. Lum eloquently states, "Everyone, from parents, potential parents to governmental agencies at all levels, can play a role in raising awareness and providing appropriate care to one of the most vulnerable, i.e. those who will or have been born before their time".

By continuing to prioritize research, education, and awareness, we can make significant strides in safeguarding the health of our most vulnerable population – premature infants – and ensure a healthier future for generations to come.


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