Endotracheal intubation and its relationship to bacterial colonization and systemic infection of newborn infants
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Antibiotics given at intubation significantly reduced bacterial colonization and systemic infections in newborn infants. This preventive strategy is crucial for improving outcomes in critically ill neonates requiring respiratory support.
Area of Science:
- Neonatal Medicine
- Infectious Disease Prevention
- Critical Care Pediatrics
Background:
- Neonates undergoing orotracheal intubation are at high risk for respiratory tract bacterial colonization and subsequent systemic infections.
- Early bacterial colonization can lead to severe complications, impacting infant mortality and morbidity.
Purpose of the Study:
- To prospectively evaluate the efficacy of antibiotic prophylaxis in preventing bacterial colonization and systemic infections in newborn infants following orotracheal intubation.
- To compare infection rates between neonates receiving antibiotics and a control group.
Main Methods:
- A prospective study involving 54 newborn infants requiring orotracheal intubation.
- Cultures of nasopharyngeal, tracheal aspirates, blood, cerebrospinal fluid, and urine were collected at intubation, daily, and at extubation/death.
- Infants were divided into a study group (antibiotics at intubation) and a control group.
Main Results:
- Antibiotic administration at intubation was associated with a significant reduction in respiratory tract colonization and systemic infections.
- Systemic infections occurred exclusively in colonized infants and were three times more frequent in the control group.
- Factors like delayed intubation (>12 hours) and prolonged intubation (>72 hours) or reintubation increased colonization risk.
Conclusions:
- Antibiotic prophylaxis initiated at the time of orotracheal intubation is an effective strategy for preventing bacterial colonization and systemic infections in neonates.
- This intervention can decrease the incidence of serious infections, potentially improving outcomes for intubated infants.
Abstract:
The role of antibiotics in preventing respiratory tract bacterial colonization and systemic infection after orotracheal intubation was prospectively studied in 54 newborn infants. Respiratory tract colonization was assessed from nasopharyngeal and tracheal aspirate cultures obtained at intubation and daily thereafter, while systemic infection was monitored by blood, cerebrospinal fluid, and suprapubic urine cultures performed initially and every three days thereafter while intubated. Colonization and systemic cultures were also obtained at extubation or death. The study group, provided with antibiotics at intubation, and the control group were similar in birthweight and gestational age, as well as race, sex, hospital or origin, and indication for intubation. Colonization at intubation was five times more common in infants intubated 12 or more hours after birth than in infants intubated earlier. Subsequent colonization was twice as frequent in infants intubated longer than 72 hours as well as in those requiring two or more reintubations. Systemic infection occurred only in those infants who were initially or subsequently colonized and was three times more frequent in the control group than in the study group.