Neonatal sepsis remains a leading cause of newborn morbidity and mortality across Nigeria. It refers to a systemic infection occurring in the first twenty-eight days of life, presenting with non-specific clinical signs that can rapidly progress to septic shock and death if not aggressively managed. In many Nigerian health facilities, high patient loads, delayed presentation from rural communities, and limited intensive care infrastructure compound the challenge. Midwives frequently serve as the first line of defense, recognizing subtle danger signs before overt collapse occurs. Understanding local epidemiological factors—such as prolonged rupture of membranes in environments with limited sterile supplies—helps shape practical clinical intuition.
The causative organisms of neonatal sepsis are generally divided into bacterial pathogens acquired during the perinatal period or from the postnatal environment. In sub-Saharan Africa, Group B Streptococcus (GBS) and Escherichia coli dominate early-onset infections, while Klebsiella pneumoniae, Staphylococcus aureus, and Pseudomonas species frequently drive late-onset hospital-acquired sepsis.
Classifying neonatal sepsis by its time of onset provides valuable clues regarding the likely source of infection and causative organisms.
| Feature | Early-Onset Sepsis (EOS) | Late-Onset Sepsis (LOS) |
|---|---|---|
| Time of Presentation | Usually within the first 72 hours of life | After 72 hours up to 28 days of life |
| Primary Source | Maternal genital tract flora | Environmental or hospital-acquired sources |
| Common Risk Factors | Prolonged rupture of membranes, maternal fever | Prematurity, prolonged hospitalization, central lines |
| Clinical Picture | Often presents as fulminant respiratory distress or shock | Often presents with poor feeding, lethargy, or focal signs |
Neonates do not present with localized classical signs of infection like adults do. Instead, their immune response triggers vague, multi-system dysfunction. Midwives must remain alert to subtle shifts in baseline behavior. A baby who suddenly stops breastfeeding well, feels slightly cold, or looks pale warrants immediate investigation.
Confirming neonatal sepsis requires a combination of bacteriological cultures and supportive hematological markers. Before starting empirical antibiotics, a blood culture must be drawn to identify the exact organism and its sensitivity pattern.
Once sepsis is clinically suspected, treatment must begin without waiting for laboratory results. Delaying therapy increases mortality exponentially. Empirical therapy usually combines a penicillin derivative (such as Ampicillin) with an aminoglycoside (such as Gentamicin) to cover common early-onset pathogens.
Antimicrobial stewardship ensures that once culture and sensitivity results become available, broad-spectrum drugs are narrowed down to targeted agents. This practice prevents the emergence of multi-drug resistant bacterial strains within the nursery. Supportive organ support, fluid management, and correction of electrolyte imbalances run concurrently with antimicrobial therapy.
Medical treatment alone is insufficient without meticulous nursing care. Maintaining thermal neutrality through incubators or radiant warmers prevents cold stress, which worsens metabolic acidosis. Respiratory support, ranging from humidified oxygen to mechanical ventilation, must be adjusted continuously based on oxygen saturation monitoring.
Nutritional support is another priority. When enteral feeding is contraindicated due to respiratory distress or abdominal distension, total or partial parenteral nutrition keeps the infant stable. Strict aseptic technique during intravenous cannulation and wound care prevents secondary nosocomial infections from complicating the primary illness.
Preventing neonatal sepsis begins long before delivery through antenatal education and proper intrapartum management. Screening pregnant women for sexually transmitted infections and treating urinary tract infections promptly reduces vertical transmission risks.
During labor, minimizing unnecessary vaginal examinations after rupture of membranes limits ascending bacterial spread. Clean delivery practices—the 'six cleans' of birth attendance—protect the newborn in community and facility settings alike. Proper cord care emphasizing dry cord care rather than applying traditional concoctions remains a cornerstone of preventing late-onset infections at home.