Final answer:
The client should monitor for and report nausea and vomiting, muscle weakness, and blurred vision when starting therapy with digoxin, as these may indicate digoxin toxicity. Increased heart rate is not commonly associated with digoxin use.
Step-by-step explanation:
The nurse should instruct the client to monitor and report certain adverse effects that may occur while starting therapy with digoxin. Digoxin is a medication commonly used to treat various heart conditions, including atrial fibrillation and heart failure. However, it comes with potential side effects that the client must be aware of. The nurse should indicate that the client should monitor for and report any instances of nausea and vomiting, muscle weakness, and blurred vision. These symptoms can indicate digoxin toxicity, which is a potentially serious condition requiring medical attention. It is important to note that an increased heart rate is not typically associated with digoxin therapy, as digoxin usually lowers the heart rate. Instead, symptoms of digoxin toxicity often involve gastrointestinal, ocular, and muscular effects.