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Published on: April 4, 2022
Angina (chronic stable)
1Dept of Cardiology, Royal Hallamshire Hospital, Sheffield, UK.
Insights
Long-term drug treatments for stable angina, including beta-blockers and calcium channel blockers, were reviewed for effectiveness and safety. This systematic review provides evidence on various anti-anginal therapies.
Area of Science:
- Cardiology
- Pharmacology
Background:
- Stable angina, often caused by coronary atherosclerosis, affects a significant percentage of older adults.
- Key risk factors include hypertension, high cholesterol, smoking, inactivity, and obesity.
- Angina patients face elevated risks of cardiovascular events and mortality.
Purpose of the Study:
- To systematically review the long-term effects of drug treatments for stable angina.
- To evaluate the effectiveness and safety of various anti-anginal interventions.
Main Methods:
- A systematic review was conducted, searching major medical databases up to June 2007.
- Included studies were systematic reviews, randomized controlled trials (RCTs), and observational studies.
- Evidence quality was assessed using the GRADE system, incorporating safety alerts from regulatory agencies.
Main Results:
- Nine studies met the inclusion criteria for the review.
- The review analyzed data on beta-blockers, calcium channel blockers, long-acting nitrates, and potassium channel openers.
- Effectiveness and safety data for combination therapies and adjunct treatments were also examined.
Conclusions:
- The review provides comprehensive information on the long-term effectiveness and safety of multiple anti-anginal drug classes.
- Evidence supports the use of beta-blockers, calcium channel blockers, and other agents in managing stable angina.
- Findings guide clinical decisions regarding anti-anginal drug therapy and adjunct treatments.
Introduction:
Stable angina is usually caused by coronary atherosclerosis, and affects up to 16% of men and 10% of women aged 65-74 years in the UK. Risk factors include hypertension, elevated serum cholesterol levels, smoking, physical inactivity, and overweight. People with angina are at increased risk of other cardiovascular events and mortality compared with people without angina. Among people not thought to need coronary artery revascularisation, annual mortality is 1-2% and the annual non-fatal myocardial infarction (MI) rate is 2-3%.
Methods And Outcomes:
We conducted a systematic review and aimed to answer the following clinical question: What are effects of long-term drug treatment for stable angina? We searched: Medline, Embase, The Cochrane Library, and other important databases up to June 2007 (BMJ Clinical Evidence reviews are updated periodically, please check our website for the most up-to-date version of this review). We included harms alerts from relevant organisations such as the US Food and Drug Administration (FDA) and the UK Medicines and Healthcare products Regulatory Agency (MHRA).
Results:
We found nine systematic reviews, RCTs, or observational studies that met our inclusion criteria. We performed a GRADE evaluation of the quality of evidence for interventions.
Conclusions:
In this systematic review we present information relating to the long-term effectiveness and safety of the following interventions: beta-blockers, calcium channel blockers, long-acting nitrates, potassium channel openers, combinations of these anti-anginal drug treatments and the use of these anti-anginal drug treatment as an adjunct to existing therapies.
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Organic nitrates, such as nitroglycerin, play a pivotal role. Once metabolized, they liberate nitric oxide, a molecular marvel. Nitric oxide triggers guanylyl cyclase and augments cGMP production. This biochemical cascade orchestrates the relaxation of vascular smooth muscles, ushering in vasodilation and enhancing coronary blood flow. Administered...

