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Ivabradine use in refractory unstable angina: a case report
International Journal of Immunopathology and Pharmacology
|October 14, 2009
Summary
Ivabradine effectively managed severe unstable angina in a patient unresponsive to other treatments. This heart rate-lowering medication provided a new therapeutic option when all else failed, leading to symptom resolution.
Area of Science:
- Cardiology
- Pharmacology
Background:
- Unstable angina is a serious cardiac condition often requiring aggressive management.
- Standard treatments for unstable angina include nitrates, beta-blockers, antiplatelets, and statins.
Observation:
- A 75-year-old woman with type II diabetes and diabetic macro-angiopathy presented with severe unstable angina.
- Coronary angiography revealed severe multi-vessel coronary artery disease unsuitable for revascularization.
- Despite maximal medical therapy, including beta-blockers and diltiazem, the patient's heart rate remained elevated (80-100 bpm), driving anginal symptoms.
Findings:
- Off-label use of ivabradine was initiated at 2.5 mg b.i.d. and titrated to 5 mg b.i.d.
- Ivabradine treatment led to a gradual reduction in heart rate.
- The patient experienced significant clinical improvement, becoming asymptomatic within a week and remaining so at three months.
Implications:
- Ivabradine can be a valuable therapeutic option for severe unstable angina refractory to conventional treatments.
- This case highlights the potential of heart rate-lowering therapy in managing complex ischemic heart disease.
- Further research may explore the role of ivabradine in similar patient populations with limited treatment alternatives.
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