A Comprehensive Evaluation of Rapid Diagnostic Methods in Neonatal Sepsis: Evaluating Their Accuracy, Turnaround Time, and Impact on Antibiotic Stewardship and Clinical Outcomes.

Background: Neonatal sepsis is a leading cause of morbidity and mortality among births in newborns in the global community. The current diagnostic approaches, especially blood culture, are insensitive and take a long time to give results, thus delaying treatment and increasing dependence on empirical broader spectrum antibiotics. Challenges posed by slow pathogen detection continue to be a norm in diagnostic platforms. Innovations like polymerase chain reaction (PCR), microfluidics, and procalcitonin (PCT) present probable solutions that can enhance pathogen detection. Methodology: This prospective observational study was conducted over 6 months from February 2024 to July 2024 at the neonatal intensive care unit (NICU) of Maheshwara Medical College, Hyderabad, India. We randomized the newborns to receive rapid diagnostic methods or standard blood cultures in 200 patients with suspected sepsis. This research assessed diagnostic concordance, time to result, antibiotic prescriptions, and clinical performance indicators such as mortality, NICU length of stay, and readmission. Results: Rapid diagnostic methods significantly outperformed conventional blood cultures in diagnostic accuracy, with PCR assays showing 92% sensitivity and 89% specificity. Turnaround times for PCR, microfluidics, and PCT tests were 6, 4, and 2 h, respectively, compared to 48-72 h for blood cultures. The implementation of rapid diagnostics led to a reduction in empirical antibiotic initiation from 95% to 70%, increased antibiotic de-escalation from 20% to 50%, and shortened antibiotic therapy duration from 8 to 6 days. Clinically, mortality rates decreased from 15% to 10%, NICU stay reduced from 14 to 11 days, and readmission rates dropped from 8% to 5%. Conclusion: This is because rapid diagnostic methods enhance the diagnosis of neonatal sepsis by increasing accuracy and also shortening the duration taken in its diagnosis. This helps in the efficient use of antibiotics, and hence good clinical results were observed. Of these, some can improve care, limit the use of antibiotics, and hence prevent the development of resistance and improve management of neonatal sepsis, especially in limited resource regions.