A female client is discharged from the hospital after having an episode of heart failure. She’s prescribed daily oral doses of digoxin (Lanoxin) and furosemide (Lasix). Two days later, she tells her community health nurse that she feels weak and frequently feels her heart "flutter. " What action should the nurse take
A. Tell the client to rest more often.
B. Tell the client to stop taking the digoxin, and call the physiciarn.
C. Call the physician, report the symptoms, and request to draw a blood sample to determine the client’s potassium level.
D. Tell the client to avoid foods that contain caffein
参考答案：C
解析：Furosemide is a potassium-wasting diuretic. A low potassium level may cause weakness and palpitations. Telling the client to rest more often won’t help the client if she’s hypokalemic. Digoxin isn’t causing the client’s symptoms, so she doesn’t need to stop taking it. The client should probably avoid caffeine, but this wouldn’t resolve potassium depletion.