Management of Stable Angina

Pharmacological Management Algorithm

The European Society of Cardiology recommends beta-blockers as the first-line therapy for stable angina, followed by calcium channel blockers or long-acting nitrates if beta-blockers are ineffective or contraindicated, with short-acting nitroglycerin prescribed to all patients for immediate symptom relief 1, 2
Beta-blockers are superior to calcium channel blockers in reducing exercise-induced ischemia as demonstrated in the TIBBS study 3, 4
The American College of Cardiology recommends providing short-acting nitroglycerin for immediate symptom relief and situational prophylaxis, with proper instructions on usage 1
Start with a beta-blocker (e.g., metoprolol, atenolol, bisoprolol) titrated to full dose, considering 24-hour protection against ischemia 1, 3

Aspirin 75-150 mg daily (unless contraindicated) should be prescribed to improve prognosis 2, 5
Statin therapy should be prescribed for all patients with coronary disease 2, 5
ACE inhibitor therapy should be considered in patients with hypertension, heart failure, left ventricular dysfunction, prior myocardial infarction with LV dysfunction, or diabetes 5, 6

High-dose calcium channel blockers are the mainstay of treatment for vasospastic angina management (up to 480 mg/day verapamil, up to 260 mg/day diltiazem, up to 120 mg/day nifedipine) 7
All patients should be prescribed sublingual nitroglycerin for immediate relief 1, 2
If angina does not respond to nitroglycerin, patients should seek emergency care as this may indicate myocardial infarction 5

Revascularization should be considered when symptoms are not adequately controlled with optimal medical therapy (two or more anti-anginal drugs at optimal doses) 8, 6
Revascularization should be considered for high-risk patients with left ventricular dysfunction 6

Using three anti-anginal drugs simultaneously may provide less symptomatic protection than two drugs; optimize dosing of one drug before adding another 1, 6
Immediate-release or short-acting dihydropyridine calcium antagonists should be avoided as they can increase adverse cardiac events 2
Poor medication adherence is a common cause of treatment failure and should always be assessed 1
Nitrate tolerance can develop with continuous therapy; ensure proper dosing schedule with nitrate-free intervals 5