Neonatal sepsis

Neonatal sepsis is a severe infectious disease occurring in newborns, characterized by a systemic infection caused by pathogenic microorganisms, followed by the development of the Septis index. Its clinical picture can vary from minor non-specific symptoms to severe conditions that threaten the life of the newborn. Neonatal sepsis can develop both in the first days of life (early sepsis) and after the first month (late sepsis). This condition primarily affects children with low and very low birth weight, as well as those who were exposed to various risk factors during intrauterine development or during childbirth. Mortality from neonatal sepsis remains high, which emphasizes the importance of early diagnosis and adequate treatment.

History of the disease and interesting historical facts

The history of neonatal sepsis research dates back to the late 19th century, when specific pathogens such as staphylococci and streptococci were identified. A significant role in understanding this condition belongs to the work of scientists such as Louis Pasteur and Robert Koch, who laid the foundations of microbiology and identified how bacteria can cause infectious diseases. In the 1970s, with the development of diagnostic and therapeutic technologies, the survival rate of newborns with neonatal sepsis improved. Modern treatment includes not only antibiotic therapy, but also support of vital body functions, which has significantly reduced the mortality rate.

Epidemiology

Neonatal sepsis remains one of the most dangerous neonatal diseases. According to the World Health Organization, the epidemiology of neonatal sepsis has regional differences. In developing countries, the incidence rate can be 20-30 per 1000 newborns, while in highly developed countries this figure is significantly lower - about 1-5 per 1000 newborns. About half of the cases of sepsis in newborns occur during periods when children were born prematurely or had low birth weight. It is also worth noting that the risk of developing the disease increases in neonatal intensive care units.

Genetic predisposition to this disease

There is evidence of genetic predisposition to neonatal sepsis. Studies have identified some genes associated with the immune response that may increase the risk of sepsis in neonates. These genes include genes encoding cytokines and adhesion molecules, such as IL-1, IL-6, and ICAM-1. Some mutations in these genes may lead to impaired response to infection. However, these mechanisms are not fully understood and require additional clinical and laboratory studies.

Risk factors for the development of this disease

Risk factors for neonatal sepsis can be divided into several categories:

• Physical factors: prematurity, low and very low birth weight, birth asphyxia.
• Chemical factors: presence of maternal infection (eg, chlamydial or streptococcal infection), use of invasive procedures during delivery.
• Conditions of care: long-term use of catheters, insufficient sterility in neonatal wards.
• Socioeconomic factors: low level of medical care, lack of antenatal examinations of the mother.

Diagnosis of this disease

Diagnosis of neonatal sepsis includes the following aspects:

• Main symptoms: fever, hypothermia, lethargy, malnutrition, changes in respiratory function, loss of reflexes.
• Laboratory tests: blood test for pathogens (cultures), determination of C-reactive protein (CRP) levels, electroimmunology (enzyme-linked immunosorbent assay).
• Radiological examinations: chest X-ray to detect pneumonia or other signs of infection.
• Other types of diagnostics: urine analysis, cerebrospinal fluid analysis (if meningitis is suspected).
• Differential diagnosis: other causative factors such as mechanical trauma, allergic reactions and metabolic disorders must be considered.

Treatment

Treatment of neonatal sepsis involves a comprehensive approach:

• General treatment: isolation of the patient, ensuring proper hygiene, correction of hydration and nutrition.
• Pharmacological treatment: administration of broad-spectrum antibiotics such as ampicillin or gentamicin, with monitoring of the susceptibility of microorganisms.
• Surgical treatment: in rare cases when the cause of sepsis is related to a surgical condition (eg, perforations, abscesses).
• Other treatments may include acid-base balance correction, oxygen therapy, and immunotherapy.

List of medications used to treat this disease

The most widely used groups of drugs are:

• Beta-lactam antibiotics: ampicillin, penicillin.
• Aminoglycosides: gentamicin, tobramycin.
• Clindamycin.
• Glycopeptides: vancomycin.
• Antibiotics active against anaerobic bacteria: metronidazole.

Disease monitoring

Monitoring of patients with neonatal sepsis includes:

• Monitoring of vital functions: respiratory rate, heart rate, oxygen saturation level.
• Conducting repeated laboratory tests to monitor the dynamics of the condition.
• Evaluation of the effectiveness of antibiotic therapy and other treatment methods.
• Prognosis: With timely diagnosis and treatment, survival exceeds 70-80%.
• Complications: May include organ damage, long-term neurological effects, and development of chronic diseases.

Age-related features of the disease

Neonatal sepsis manifests itself differently depending on the patient's age:

• In premature babies: symptoms are often more severe, with a high risk of developing meningitis.
• In full-term newborns: more subtle manifestations may be observed, which are difficult to diagnose.
• In adults: Rarely, septicemia may develop due to acute infections.

Questions and Answers

• What causes neonatal sepsis? Neonatal sepsis occurs due to infections caused by bacteria, viruses or fungi, usually in conditions of insufficient sterility or weakened immunity of the baby.
• What are the main symptoms of neonatal sepsis? Major symptoms include fever, hypothermia, lethargy, poor feeding and respiratory distress.
• How is neonatal sepsis diagnosed? Diagnosis is made using clinical signs, laboratory tests, radiological studies and sometimes cerebrospinal fluid analysis.
• What is the chance of recovery from neonatal sepsis? With adequate and timely treatment, survival is 70-80%, but depends on the initial health conditions of the newborn.
• What are the main treatments for neonatal sepsis? Treatment includes antibiotic therapy, supportive care and, in some cases, surgery.