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Impact of Neonatal Intensive Care Services on Survival of Preterm Infants in Nigeria

Abstract

Preterm birth remains a major public health concern in Nigeria and is an important contributor to neonatal morbidity and mortality. Preterm infants are particularly vulnerable to respiratory distress, infections, hypothermia, feeding difficulties, birth complications, and other conditions that may require specialized neonatal care. Neonatal Intensive Care Units (NICUs) provide specialized services designed to support the survival and recovery of critically ill and preterm newborns through continuous monitoring, respiratory support, thermal care, nutritional support, infection prevention and treatment, management of neonatal complications, and specialized nursing and medical care. However, access to effective neonatal intensive care services in Nigeria may be constrained by inadequate numbers of specialized healthcare personnel, limited availability of functional equipment, shortages of essential medicines and supplies, high treatment costs, inadequate referral systems, and unequal distribution of neonatal intensive care facilities. Survival of preterm infants refers to the proportion of preterm newborns who remain alive during a specified period following birth or admission to a neonatal care facility. Against this background, this study investigates the impact of neonatal intensive care services on the survival of preterm infants in Nigeria. The study will be anchored on the Health Systems Framework, Andersen's Behavioral Model of Health Services Use, and the Continuum of Care Model. The Health Systems Framework emphasizes service delivery, health workforce, health information, medical technologies, essential medicines, financing, and accessibility as important components of effective healthcare delivery. Andersen's Behavioral Model explains healthcare utilization through predisposing, enabling, and need-related factors and provides a framework for understanding access to neonatal intensive care services. The Continuum of Care Model emphasizes the interconnectedness of maternal, newborn, and child health services and highlights the importance of timely and continuous care from pregnancy through childbirth and the neonatal period. Collectively, these theoretical perspectives provide a suitable framework for explaining how neonatal intensive care services may influence the survival of preterm infants in Nigeria. The study will adopt a quantitative retrospective cohort or hospital-based analytical research design. Data will be obtained from selected tertiary and secondary healthcare facilities with neonatal intensive care units across selected locations in Nigeria. A multistage sampling technique will be used to select states, hospitals, neonatal units, and eligible preterm infants. Neonatal intensive care services will be assessed using indicators such as availability of functional neonatal intensive care units, availability of incubators and radiant warmers, respiratory support services, neonatal monitoring equipment, availability of trained neonatologists and neonatal nurses, infection prevention and control services, nutritional support, availability of essential medicines, blood transfusion services, staffing levels, referral arrangements, and continuity of neonatal care. Survival of preterm infants will be assessed using indicators such as survival to hospital discharge, neonatal mortality, duration of survival following admission, and survival at specified follow-up periods where follow-up data are available. Data will be obtained from neonatal admission registers, medical records, intensive care unit records, discharge records, laboratory reports, and relevant hospital documents. Descriptive statistics will be used to summarize the characteristics of preterm infants, availability of neonatal intensive care services, and survival patterns. Inferential statistical techniques, including chi-square tests, survival analysis, correlation analysis, and logistic or Cox regression analysis where appropriate, will be used to determine the impact of neonatal intensive care services on preterm infant survival. Diagnostic tests will also be conducted to assess the reliability, validity, and robustness of the findings. The study is expected to find that adequate and accessible neonatal intensive care services have a significant positive impact on the survival of preterm infants in Nigeria. Preterm infants managed in facilities with adequate neonatal equipment, trained healthcare personnel, respiratory support, thermal care, nutritional support, infection prevention services, and appropriate monitoring are expected to have higher survival rates than infants receiving care in settings with limited neonatal intensive care capacity. Early access to specialized care may facilitate prompt recognition and management of life-threatening complications, thereby improving survival outcomes. Availability of functional incubators, respiratory support equipment, essential medicines, and trained neonatal healthcare personnel may further improve the quality of care provided to vulnerable newborns. Conversely, equipment shortages, inadequate staffing, high patient-to-nurse ratios, infection risks, interruptions in essential supplies, delayed referrals, and financial barriers may negatively affect survival. The study may also demonstrate that the benefits of neonatal intensive care are influenced by the timeliness and quality of care provided from admission through discharge. The study is expected to contribute to the literature on neonatal intensive care services, preterm infant survival, neonatal mortality, newborn health, maternal and child health, paediatrics, epidemiology, and public health in Nigeria. The findings will provide useful information to the Federal Ministry of Health and Social Welfare, National Primary Health Care Development Agency, state ministries of health, hospital administrators, neonatologists, paediatricians, neonatal nurses, maternal and child health programme managers, development partners, and policymakers regarding strategies for improving newborn survival. The study will also provide evidence-based recommendations for expanding neonatal intensive care capacity, improving the availability and maintenance of neonatal equipment, increasing the number of trained neonatal healthcare professionals, strengthening infection prevention and control, ensuring uninterrupted availability of essential medicines and supplies, improving neonatal referral systems, reducing financial barriers to neonatal care, and strengthening quality improvement programmes for preterm infant care across Nigerian hospitals.

Keywords: Neonatal intensive care services, preterm infants, infant survival, Nigeria, neonatal mortality, newborn health, neonatal intensive care unit, premature birth, neonatal care, paediatrics, maternal and child health, epidemiology, public health.