In a patient with stable angina, what is the correct action regarding sublingual nitroglycerin administration?
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Correct answer: Lie down, take one dose, repeat every 5 minutes; after 3 doses with persisting pain, seek emergency care
Standard teaching for angina includes taking nitroglycerin promptly, monitoring response, and seeking emergency care if pain is unrelieved after three doses or persists beyond the usual pattern.
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