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Ability of bacteria isolated from the hospital environment to proliferate in infusion fluids
1Department of Pharmaceutics, University of Ife, Ile-Ife, Nigeria.
Abstract:
The ability of some bacteria isolated from environmental sources to grow in commonly administered infusion fluids was investigated. Infusion fluids may become contaminated with bacteria present in the environment in which they are being administered and the ability of such bacteria to proliferate within commonly used infusion fluids is therefore clinically significant. Bacteria present in the air and sink drains in wards at the Ife State Hospital were isolated, identified, and comprised fifteen Gram-positive and five Gram-negative organisms. Fourteen of the organisms obtained were introduced into sterile distilled water and five different infusion fluid preparations and were monitored over a 48 h period. It was found that, in general, Gram-positive organisms did not grow in the fluids used, while Gram-negative organisms were able to proliferate in the same fluids. Some Gram-positive organisms showed remarkable ability to remain viable in infusion fluids for more than 48 h.
Insights
Environmental bacteria can contaminate infusion fluids. Gram-negative bacteria proliferate in these fluids, posing a clinical risk, while Gram-positive bacteria mostly remain viable but do not grow.
Area of Science:
- Microbiology
- Clinical Pharmacy
- Infection Control
Background:
- Infusion fluids are susceptible to environmental bacterial contamination.
- Bacterial proliferation in infusion fluids presents a significant clinical concern for patient safety.
- Understanding bacterial growth dynamics in intravenous fluids is crucial for healthcare settings.
Purpose of the Study:
- To investigate the growth potential of environmental bacteria in common infusion fluids.
- To identify specific bacterial types capable of proliferating in intravenous preparations.
- To assess the clinical significance of bacterial contamination in hospital environments.
Main Methods:
- Isolation and identification of bacteria from hospital air and sink drains.
- Introduction of selected bacterial isolates into sterile water and five infusion fluid types.
- Monitoring bacterial viability and proliferation over a 48-hour period.
Main Results:
- Gram-negative bacteria demonstrated proliferation in the tested infusion fluids.
- Gram-positive bacteria generally did not grow in the infusion fluids.
- Certain Gram-positive bacteria exhibited prolonged viability (over 48 hours) in the fluids.
Conclusions:
- Environmental Gram-negative bacteria pose a risk of proliferation in infusion fluids.
- Infusion fluid contamination control measures are critical to prevent bacterial growth.
- Further research into bacterial viability and potential pathogenicity in intravenous fluids is warranted.