Keola Akana is a 70-year-old male with a history of heart failure. He was admitted to the medical-surgical unit early on Monday morning for medication adjustment, monitoring, and cardiac rehabilitation. The scenario takes place on Monday at 0900, at which time morning medications are due. 

1. What are the nutritional implications, key assessment findings, and nursing interventions for a patient with hypokalemia? 

2. What are the signs and symptoms of digoxin toxicity and how would the nurse assess for these symptoms? In your response, be sure to include specific body systems. 

3. How would the nurse provide family-centered care?