The study, led by Justin Kotliar of the Children’s Regional Hospital at Cooper University Health Care together with colleagues at New York-Presbyterian-Weill Cornell Medicine, set out with unusually specific targets. The team aimed to reduce moderate-to-severe hypothermia on admission, the time elapsed before antibiotics and intravenous fluids were started, and the use of invasive ventilation, each by 25 percent. They also aimed to reduce bronchopulmonary dysplasia, a chronic lung disease of prematurity, by 10 percent, and to achieve adherence to a Golden Hour bundle in at least half of eligible infants. The population in focus was defined by gestational age below 32 weeks, birth weight at or below 1500 grams, or both, the categories of newborns whose immature physiology leaves them most vulnerable in the delivery room.

The intervention itself was not a new drug or device but a structured bundle of coordinated practices, implemented through seven successive Plan-Do-Study-Act cycles between December 2021 and October 2023. This iterative framework, drawn from the Institute for Healthcare Improvement’s Model for Improvement, treats each change as a small experiment: a proposed modification is introduced, its effects are measured, and the results inform the next cycle. The bundle incorporated standardized admission workflows, improved thermoregulation practices in the delivery room, and optimized early respiratory management. In practical terms, that meant rehearsed team roles, checklists modeled on aviation-style human factors engineering, plastic wrap and warming measures to prevent heat loss, and a deliberate preference for gentler, non-invasive respiratory support where clinically appropriate rather than defaulting to intubation and mechanical ventilation.

The results, tracked with statistical process control charts known as Shewhart charts, were striking. Moderate-to-severe hypothermia on admission fell from 25 percent of infants to zero over the study period. Hypothermia matters enormously in this population: large database analyses, including work from the Canadian Neonatal Network, have linked admission temperatures outside the normal range to increased mortality and major morbidity in infants born before 33 weeks. Because premature infants have thin skin, little subcutaneous fat, and a high surface-area-to-mass ratio, they lose heat rapidly, and cold stress triggers oxygen consumption and metabolic strain that fragile organs can ill afford. Eliminating moderate-to-severe hypothermia entirely represents the kind of outcome that quality improvement science rarely achieves.

Medication and fluid timing improved just as dramatically. The mean time to antibiotic administration dropped from 132 minutes to 77 minutes, a reduction of nearly half. Early-onset sepsis remains a feared diagnosis in preterm infants, and while the decision to start antibiotics is a careful clinical judgment, delays in initiating treatment once the decision is made can allow bacterial infection to progress in babies with limited physiological reserves. Meanwhile, the proportion of infants receiving intravenous fluids within the Golden Hour rose from 30 percent to 86 percent. Fluid and glucose homeostasis in the first hour is a delicate balance, as the neonatal literature on fluid, electrolytes, and nutrition emphasizes, and establishing reliable intravenous access early stabilizes both metabolism and the delivery of critical medications.

Perhaps the most consequential finding concerned the lungs. The rate of grade 2 or grade 3 bronchopulmonary dysplasia, classified using an evidence-based diagnostic approach, fell from 37 percent to 19 percent over the study period. Bronchopulmonary dysplasia is one of the most burdensome long-term complications of extreme prematurity, associated with prolonged oxygen dependence, rehospitalization in infancy, and impaired neurodevelopment. Its pathogenesis involves volutrauma and barotrauma from mechanical ventilation, inflammation, and oxygen toxicity, all of which injure lungs that are still forming alveoli. By shifting early respiratory management away from unnecessary invasive ventilation toward approaches such as nasal continuous positive airway pressure, a strategy supported by randomized trials including the COIN trial, the bundle appears to have protected developing lungs during their most vulnerable period.

Adherence to the full Golden Hour bundle ultimately reached 88 percent, far exceeding the 50 percent goal the team had set. That figure is notable because bundle adherence is often the weak link in quality improvement work. Neonatal resuscitation and stabilization involve large, multidisciplinary teams, including neonatologists, nurses, respiratory therapists, and pharmacists, all performing time-critical tasks in a confined space under stress. Human factors research has shown that in such environments, memory-based protocols fail predictably, and that checklists, role clarity, and positive reinforcement of team behaviors are essential to reliability. The Weill Cornell team’s use of repeated PDSA cycles appears to have embedded the bundle into routine practice rather than leaving it as a paper protocol.

The study’s methodology deserves attention because it illustrates how modern quality improvement research differs from a conventional randomized trial. Outcomes were analyzed using Shewhart P-charts and X-bar/S-charts, statistical process control tools originally developed for manufacturing that distinguish ordinary variation from meaningful, sustained change. A special-cause signal on such a chart, indicated by points beyond control limits or persistent runs on one side of the centerline, provides evidence that an intervention genuinely shifted a process rather than fluctuating by chance. This approach is well suited to sequential implementation, in which every eligible infant receives the intervention and historical baselines serve as the comparison. The initiative was reviewed by the institutional board at Weill Cornell Medicine and deemed exempt as quality improvement, and the authors reported no competing interests and no external funding.

The findings also fit into a growing international literature. Previous single-center initiatives, including projects published in the American Journal of Medical Quality and in the Journal of Perinatology itself, have reported improvements in admission temperature and time to interventions after Golden Hour protocols. A 2024 scoping review in BMC Pediatrics catalogued the expanding range of Golden Hour quality improvement efforts worldwide. What distinguishes the new study is the breadth of outcomes that moved together: thermoregulation, antibiotic timing, fluid initiation, ventilation practice, and ultimately a chronic lung disease diagnosis, all improving in parallel as bundle adherence climbed. That coherence matters, because it suggests the improvements flowed from a genuine system change rather than isolated fixes.

Cautions remain, as they do with any single-center, uncontrolled initiative. Statistical process control can demonstrate that outcomes changed after the intervention, but it cannot fully exclude the influence of concurrent changes in patient mix, staffing, or co-interventions over nearly two years. The diagnosis of bronchopulmonary dysplasia depends in part on survival and on imaging practices, which can shift over time. Still, the magnitude and internal consistency of the changes, from a 25 percent hypothermia rate to zero and a near-halving of severe chronic lung disease, are difficult to dismiss. For neonatal intensive care units everywhere, the message is both humbling and empowering: some of the most powerful medicine delivered to a premature infant is not a new molecule but the disciplined, rehearsed, and human-centered organization of the first sixty minutes of life.

Subject of Research: Quality improvement in Golden Hour neonatal care to reduce morbidity in at-risk preterm infants

Article Title: Sixty golden minutes: a quality improvement bundle reduces morbidities in at-risk preterm infants

Article References: Sixty golden minutes: a quality improvement bundle reduces morbidities in at-risk preterm infants. (n.d.). https://doi.org/10.1038/s41372-026-02925-1

Image Credits: AI Generated

DOI: 10.1038/s41372-026-02925-1

Keywords: Golden Hour, preterm infants, neonatology, quality improvement, hypothermia, bronchopulmonary dysplasia, NICU, Plan-Do-Study-Act, statistical process control, thermoregulation, antibiotic timing, invasive ventilation