According to the nurse instructing the client, which foods contain high amounts of omega-3 fatty acids? (Select all that apply.)

A. Placing three tablets under the tongue at once is not the recommended initial dosing for nitroglycerin.

B. Nitroglycerin tablets should not be swallowed; they are meant to be taken sublingually (under the tongue) for quick absorption.

C. This is the correct instruction, reflecting the standard protocol for acute angina treatment with nitroglycerin: one tablet under the tongue every 5 minutes as needed, with no more than three tablets in 15 minutes. If pain persists, it is advised to call emergency services.

D. This instruction is inappropriate as it delays immediate treatment for chest pain, which can be critical in the event of acute angina or a heart attack.

Explanation:

A. Beta blockers are used to manage blood pressure and heart rate but are a different class.

B. Isosorbide is a nitrate, which is used primarily to treat and prevent episodes of angina by relaxing and widening blood vessels.

C. Calcium channel blockers also manage blood pressure and chest pain but act through a different mechanism.

D. Glycoprotein IIb/IIIa receptor antagonists are used to prevent platelet aggregation and are typically used in acute coronary syndrome, not as a long-term treatment for angina.