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Published on: July 6, 2013
Iatrogenic risk factors for cytomegalovirus retinitis
William G Hodge1, Jean-François Boivin, Stanley H Shapiro
1University of Ottawa Eye Institute, Ottawa, Ontario. whodge@ottawahospital.on.ca
Background:
To determine the iatrogenic risk factors for cytomegalovirus (CMV) retinitis in patients with the acquired immunodeficiency syndrome (AIDS).
Methods:
The case-control study included 120 patients with CMV retinitis and 159 patients without CMV retinitis, all of whom had AIDS and CD4 counts less than 50 cells/microL at the time of diagnosis of retinitis or at the defined corresponding date in the controls. Iatrogenic risk factors studied were corticosteroid use, treatment with chemotherapy, treatment with radiotherapy, and blood transfusions.
Results:
Among the risk factors studied, only steroid use was predictive of CMV retinitis (odds ratio 6.41, 95% confidence interval 2.35-17.51). Based on this study, the use of steroids systemically elevated the risk of CMV retinitis.
Insights
Systemic corticosteroid use significantly increases the risk of cytomegalovirus (CMV) retinitis in patients with acquired immunodeficiency syndrome (AIDS). This finding highlights a critical iatrogenic risk factor for CMV retinitis in immunocompromised individuals.
Area of Science:
- Ophthalmology
- Infectious Diseases
- Immunology
Background:
- Cytomegalovirus (CMV) retinitis is a serious opportunistic infection in patients with acquired immunodeficiency syndrome (AIDS).
- Identifying iatrogenic risk factors is crucial for preventing CMV retinitis in this vulnerable population.
Purpose of the Study:
- To investigate iatrogenic risk factors associated with the development of CMV retinitis in patients diagnosed with AIDS.
Main Methods:
- A case-control study was conducted involving 120 AIDS patients with CMV retinitis and 159 AIDS patients without CMV retinitis.
- Patients had CD4 counts below 50 cells/microL.
- Iatrogenic factors examined included corticosteroid use, chemotherapy, radiotherapy, and blood transfusions.
Main Results:
- Systemic corticosteroid use was identified as the sole significant predictive factor for CMV retinitis.
- Patients using steroids had an odds ratio of 6.41 (95% CI: 2.35-17.51) for developing CMV retinitis.
Conclusions:
- Systemic steroid administration is a significant iatrogenic risk factor for CMV retinitis in AIDS patients.
- Clinical management should consider the heightened risk of CMV retinitis associated with corticosteroid therapy in immunocompromised individuals.
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