Optimising treatment of respiratory tract infections in nursing homes: nurse-initiated PCR testing
Leslie Dowson, Caroline Marshall, Kirsty Buising, N. Deborah Friedman, David C.M. Kong, Rhonda L. Stuart
Abstract
Highlights:
- Nurse-initiated polymerase chain reaction testing is feasible in nursing homes.
- Viruses are common among nursing home residents.
- Nurse-initiated respiratory specimen testing is useful for infection prevention.
- Further resources are required to impact antibiotic prescribing.
Background: Diagnostic testing using polymerase chain reaction (PCR) is infrequently initiated for diagnosis of respiratory tract infections (RTIs) in nursing homes. The objectives of this study were to determine the feasibility of implementing nurse-initiated PCR testing of respiratory specimens in nursing home settings and to compare antibiotic prescribing prior to and during the implementation.
Methods: This was a pragmatic, historically controlled study in 3 nursing homes (181 total beds) in Melbourne, Australia.
Results: The number of PCR tests of respiratory specimens (over 12 months) increased from 5 to 67 when nurses could initiate the tests. Residents with RTI symptoms had a virus identified by PCR in 50.7% of tests, including 14 positive for influenza. Six outbreaks were identified. When clustering was taken into consideration, incidence rates of antibiotic days of therapy did not change (incidence rate ratio = 0.94, 95% confidence interval, 0.25-3.35, P = .92) despite identification of more viral pathogens.
Conclusions: In nursing homes, nurse-initiated PCR testing of respiratory specimens is feasible and useful in terms of identifying the cause of many RTIs and outbreaks, and viruses are common in this context. However, the current study suggests the availability of these test results alone does not impact antibiotic prescribing.
Key words: Nursing home, pneumonia, PCR, antibiotics, antimicrobial stewardship.
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Citation: Dowson L., Marshall C., Buising K., Friedman N. D., Kong D. C. M., Stuart R. L. (2019). Optimising treatment of respiratory tract infections in nursing homes: Nurse-initiated PCR testing. American Journal of Infection Control, 47(8), 911-915. DOI: https://doi.org/10.1016/j.ajic.2019.02.001.








