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Bacterial contamination of pressurized inhalers
Abstract:
The objective of this project was to determine the incidence, location, and potential transmission of bacteria from pressurized inhalers contaminated during normal use by pediatric patients. Patients' inhaler usage and cleaning patterns also were evaluated. Fifteen inhalers from 12 children were cultured at three separate sites: the mouthpiece, spray portal, and the spray itself. The patient and/or parent were interviewed to determine usage and cleaning patterns. No bacterial growth was found from any of the cultured sites or aerosol of the control inhalers. All of the mouthpieces and portals of the patient-used inhalers were positive for growth, which is significant (p less than 0.01). One patient-used inhaler was positive for bacterial growth from the aerosol, which is not significant (p greater than 0.05). These results demonstrate that despite inhaler contamination, bacteria are not significantly transmitted by the aerosol. Routine cleaning of inhalers to remove accumulated debris is recommended to prevent disruption of drug delivery.
Insights
Pediatric patients
Area of Science:
- Microbiology
- Pediatric Medicine
- Respiratory Therapy
Background:
- Pressurized inhalers are crucial for pediatric respiratory disease management.
- Inhaler contamination is a concern due to potential bacterial transmission.
- Understanding bacterial presence and transmission is vital for patient safety.
Purpose of the Study:
- To determine the incidence and location of bacterial contamination in pediatric inhalers.
- To assess the potential for bacterial transmission via inhaler aerosol.
- To evaluate pediatric patients' inhaler usage and cleaning habits.
Main Methods:
- Cultured 15 inhalers from 12 pediatric patients at mouthpiece, spray portal, and aerosol sites.
- Interviewed patients/parents regarding inhaler usage and cleaning patterns.
- Compared bacterial growth in patient-used inhalers versus control inhalers.
Main Results:
- Significant bacterial growth (p < 0.01) was found on mouthpieces and portals of all patient-used inhalers.
- No significant bacterial growth was detected in the aerosol of patient-used inhalers (p > 0.05).
- Control inhalers showed no bacterial growth.
Conclusions:
- Pediatric inhaler mouthpieces and portals are consistently contaminated with bacteria.
- Bacterial transmission via inhaler aerosol is not significant despite contamination.
- Routine inhaler cleaning is recommended to prevent drug delivery disruption.