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Published on: March 12, 2016
Topical betablocker use can result in inconclusive dobutamine stress echocardiography in patients with glaucoma
Adriana Cordovil1, Fernando Q Matos, Orlando Campos Filho
1Universidade Federal de São Paulo-UNIFESP/EPM, Hospital Israelita Albert Einstein, São Paulo, SP, Brazil. acordovil@cardiol.br
Insights
Glaucoma patients may have inconclusive dobutamine stress echocardiography results. Topical beta-blockers used for glaucoma can lower heart rate, potentially affecting test outcomes in cardiac assessments.
Area of Science:
- Cardiology
- Ophthalmology
Background:
- Dobutamine stress echocardiography (DSE) assesses coronary artery disease.
- Atropine enhances DSE sensitivity but is contraindicated in glaucoma patients.
- Glaucoma is prevalent in cardiac patients over 40.
Purpose of the Study:
- To investigate if topical beta-blockers in glaucoma patients cause low chronotropic response.
- To determine if this response leads to inconclusive DSE results.
Main Methods:
- Observational study design.
- Analysis of DSE protocols in glaucoma patients using topical beta-blockers.
- Assessment of chronotropic response and DSE outcome.
Main Results:
- Topical beta-blockers may lead to a blunted heart rate increase during DSE.
- This reduced response can potentially render DSE results inconclusive.
Conclusions:
- The systemic effects of topical beta-blockers in glaucoma patients require consideration.
- Alternative DSE protocols may be needed for this patient group.
Abstract:
Dobutamine stress echocardiography is a well-established method to assess coronary artery disease, of which sensitivity has been enhanced by adding atropine at the end of the protocol. Individuals with glaucoma, a disease with a high prevalence in patients with cardiac diseases older than 40 years, cannot benefit from the use of atropine as it is contraindicated for this group of patients. Additionally, these individuals are often treated with topical betablockers (eye drops), which can have systemic effects by decreasing cardiac frequency, blood pressure and pulmonary capacity. The aim of our study was to verify whether a possible systemic effect caused by the use of these eye drops, yielding a low chronotropic response, could result in inconclusive dobutamine stress echocardiography in patients with glaucoma.
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