Surfactant

Thick meconium in the amniotic fluid occurs in about one out of seven pregnancies and increases the chance that a newborn may have breathing problems after birth. These problems can include the need for oxygen, breathing support, admission to the neonatal intensive care unit (NICU), or, in severe cases, meconium aspiration syndrome or persistent pulmonary hypertension. Although amnioinfusion or placing sterile fluid into the uterus during labor was previously studied as a way to reduce these complications, earlier research had major limitations. Past studies included all types of meconium, used different fluid types and temperatures, had inconsistent protocols, and did not measure biomarkers of inflammation or look at long-term outcomes. As a result, it is still unclear whether a modern, standardized approach to amnioinfusion can meaningfully improve newborn health when the meconium is truly thick. The PEARL Trial is a randomized clinical trial designed to answer this question. The study will enroll pregnant individuals at or beyond 36 weeks of gestation who develop thick meconium-stained amniotic fluid, confirmed using a simple, objective measurement ("meconium-crit"). Participants will be randomly assigned to receive either: Warm lactated Ringer's (LR) amnioinfusion through an intrauterine pressure catheter (IUPC), following a standardized protocol, or standard care without amnioinfusion. The main goal is to determine whether warm LR amnioinfusion reduces short-term breathing problems in newborns. The study also collects umbilical cord blood at birth to evaluate markers of inflammation and potential brain injury, which may help explain why some infants develop complications. Families will also be contacted when their child is 12 months old to complete a developmental questionnaire that is widely used in pediatric practice. By using a clear definition of thick meconium, a warm LR infusion protocol, fidelity checklists, and long-term follow-up, this trial aims to provide high-quality evidence to guide care in labor and delivery units nationwide.

Respiratory distress syndrome (RDS) is common in very preterm infants due to surfactant deficiency. Surfactant replacement therapy is lifesaving, and current guidelines recommend the less invasive surfactant administration (LISA) technique. However, the optimal duration of surfactant instillation during LISA has never been systematically evaluated. Rapid instillation may provoke transient hypoxia and bradycardia, while slower administration might improve physiological stability and cerebral oxygenation. This randomised controlled trial investigates whether the duration of surfactant administration (1 minute versus 5 minutes) affects cerebral and systemic oxygen stability in extremely preterm neonates (\< 28 weeks).

Respiratory distress syndrome (RDS) is a common cause of respiratory failure in preterm infants and is frequently treated with surfactant therapy. With the increasing use of noninvasive ventilation, less invasive methods of surfactant administration have been developed. In the technique known as Less Invasive Surfactant Administration (LISA), surfactant is delivered into the trachea through a thin catheter, without the need for endotracheal intubation. This approach may reduce lung injury and improve respiratory outcomes in spontaneously breathing preterm infants. This multicenter, prospective, randomized study aims to compare the clinical effectiveness of poractant alfa and calfactant when administered using the LISA technique in preterm infants born at less than 30 weeks' gestation with RDS who are not intubated. The study will evaluate short-term outcomes, including the need for intubation, repeat surfactant administration, and respiratory support during the first 72 hours of life, as well as longer-term outcomes such as bronchopulmonary dysplasia and other neonatal morbidities.

What is this study about? This study is comparing two ways of giving surfactant, a medicine that helps premature infants breathe better. Surfactant can be given using a thin tube ("Less Invasive Surfactant Administration", called the LISA method) or through a small airway device placed in the baby's throat ("Surfactant Administration through Laryngeal or Supraglottic Airway", called the SALSA method). The goal is to see which method is safer and more effective for infants who are born at or after 29 weeks of pregnancy and have trouble breathing. What is the main question (hypothesis)? Infants who receive surfactant using the SALSA method will have fewer breathing-related problems and fewer short-term complications than those who receive it using the LISA method. What are the aims? Aim 1: Are babies in the SALSA group less likely to have low heart rate or low oxygen levels during the procedure compared to babies in the LISA group? Aim 2: Do fewer babies in the SALSA group need to be put on a breathing machine within the first 72 hours of life? Aim 3: Does the SALSA method help reduce the overall time babies need breathing support and lower the cost of their care in the NICU?

Many premature babies have breathing difficulty after birth and receive help with a breathing machine (nasal continuous positive airway pressure, NCPAP). Some of the babies whose breathing gets worse despite NCPAP are treated with surfactant, a medication that is given directly into their windpipe (trachea). Some of the babies who are given surfactant get it through a ventilation tube (endotracheal tube, ETT), while others get it through a thin catheter that is too small for ventilation. When doctors insert a tube or a thin catheter into the windpipe of a baby, they use an instrument called a laryngoscope, which has a light at its tip, to identify the entrance. Most often doctors look directly into the baby's mouth with a standard laryngoscope to identify the entrance to the windpipe. However, newer video laryngoscopes have a camera along with the light at their tip, which displays a picture of the entrance to the windpipe on a screen. In a study performed at one hospital, doctors inserted an ETT first time more often when they used a video laryngoscope. The investigators are doing a study at many hospitals where doctors usually use a standard laryngoscope to insert tubes and thin catheters into a baby's trachea by looking directly into the mouth. Each hospital will switch one-by-one to using a video laryngoscope when inserting a tube. The investigators will compare the information we collect to see if more babies who have a tube inserted first time without falls in their oxygen levels or heart rate with a video laryngoscope. The investigators will also collect information on babies who have a thin catheter inserted to compare whether doctors use fewer attempts when they use a video laryngoscope.