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Reduction of nosocomial infection in a neonatal intensive care unit (NICU)
1Department of Neonatology I, KK Women's and Children's Hospital, Singapore.
Unlabelled:
New measures aimed at reducing nosocomial infection in our neonatal intensive care unit (NICU) were introduced over a 3-month period from 1 July to 30 September 1994.
Objective:
The aim of this study was to evaluate the impact of these measures on the incidence of nosocomial infection in our NICU.
Methods:
The new measures introduced were: 1. grouping of all blood investigations to allow for fewer blood samplings per baby per day; 2. reduction of routine blood investigations after the acute illness has stabilised, and 3. a system of aseptic delivery of drugs through a central venous catheter, thereby reducing the need for peripheral intravenous lines. Nosocomial infections were defined according to the criteria spelt out in the Centres for Disease Control (CDC) guidelines. Data for the study was obtained from the ongoing surveillance carried out by the hospital's infection control team. Period 1 (1 year duration) was prior to the implementation of the new measures. Period 2 (1 year duration) was after implementation of the new measures.
Results:
The overall nosocomial infection patient rates (expressed as number of infections per 100 intensive care unit patients) were 17.6 for Period 1 and 7.5 for Period 2. The overall nosocomial infection patient-day rates (expressed as number of infections per 1000 patient-days) were 13.5 and 6.1 respectively (p < 0.01). When the infants' birth weights were stratified as < 1500 g, 1500-2500 g, and > 2500 g, the greatest decline in both the overall nosocomial infection patient rate and nosocomial infection patient-day rate was seen in infants weighing < 1500 g. There was also a significant decline in the rates of blood-stream infections in infants weighing < 1500 g (from 7.5 to 2.8 per 1000 patient-days) (p < 0.05). Ventilator associated pneumonias also showed a decline from 3.3 to 1.0 pneumonia per 1000 ventilator days. The organisms responsible for the majority of blood stream infections in Period 1 were methicillin-resistant Staphylococci Aureus (MRSA), coagulase-negative staphylococci, gram-negative bacilli and candida. In Period 2, coagulase-negative staphylococci was the predominant organism.
Conclusion:
We conclude that there was a reduction in nosocomial infection rates. The new measures introduced may have contributed to this reduction.
Insights
New infection control measures significantly reduced nosocomial infections in a neonatal intensive care unit (NICU). Rates dropped substantially, particularly in low birth weight infants, indicating improved patient safety.
Area of Science:
- Neonatal Intensive Care Unit (NICU) infection control
- Healthcare-associated infection (HAI) reduction strategies
- Pediatric patient safety
Background:
- Nosocomial infections pose a significant risk in Neonatal Intensive Care Units (NICUs).
- Effective infection control measures are crucial for improving outcomes in vulnerable infant populations.
- Previous surveillance data highlighted the need for enhanced infection prevention protocols.
Purpose of the Study:
- To evaluate the impact of newly implemented infection control measures on nosocomial infection rates within a NICU.
- To assess the effectiveness of strategies aimed at reducing invasive procedures and optimizing drug administration.
- To determine if the new protocols led to a measurable decrease in healthcare-associated infections.
Main Methods:
- Implementation of three key measures: consolidated blood sampling, reduced routine investigations, and aseptic central venous catheter drug delivery.
- Utilized Centers for Disease Control (CDC) guidelines for defining nosocomial infections.
- Compared infection rates from a 1-year period before (Period 1) and a 1-year period after (Period 2) measure implementation.
Main Results:
- Overall nosocomial infection patient rates decreased from 17.6 to 7.5 per 100 patients (p < 0.01).
- Patient-day infection rates fell from 13.5 to 6.1 per 1000 patient-days (p < 0.01).
- Significant reductions observed in infants < 1500g, including bloodstream infections (7.5 to 2.8 per 1000 patient-days) and ventilator-associated pneumonias (3.3 to 1.0 per 1000 ventilator days).
Conclusions:
- The implemented infection control measures were associated with a significant reduction in nosocomial infection rates in the NICU.
- These findings suggest that the new protocols, including optimized blood sampling and aseptic drug delivery, are effective in enhancing patient safety.
- Further research may explore the specific contribution of each measure to the overall observed decline in infections.