Digoxin, also known as Lanoxin, is a cardiac glycoside that is used to treat mild to moderate heart failure and abnormal heart rythyms such as atrial fibrillation and atrial flutter. According to the University of Maryland Medical Center website, digoxin is a dangerous drug which can easily become toxic when there is low potassium in the body.
Effects of Low Potassium on Digoxin
Accordng to the University of Maryland Medical Center, potassium is an electrolyte that is important in the normal functioning of the heart, muscular and the digestive system. The risk of digoxin toxicity is increased by hypokalemia. Hypokalemia means low potassium in the body. Low levels of potassium increase the likelihood of toxic effects from digoxin.
Signs of Digoxin Toxicity
According to Drugs.com, signs of digoxin toxicity caused by hypokalemia include visual disturbances such as blurred vision, double vision and yellow-green vision, seeing halos around objects and seeing flickering lights. Patients may also experience irregular heart beat, headache, confusion, stomach upset, convulsions, diarrhea and vomiting.
Causes of Low Potassium
The University of Maryland Medical Center states that keeping potassium balance is important in preventing digoxin toxicity. Low potassium is common in patients taking loop diuretics and patients experiencing vomiting and diarrhea. Low potassium may also be caused by excess sodium, excessive sweating and malabsorption syndrome.
Sings of Low Potassium in the Body
According to the University of Maryland Medical Center, patients with low potassium may experience weakness, lack of energy, muscle cramps, stomach upset, irregular heartbeat and abnormal electrocardiogram. Patients taking digoxin should be aware of symptoms of low potassium in order to avoid complications.
Treatment of Low Potassium
According to the University of Maryland Medical Center, low potassium levels are treated using potassium supplements especially in patients taking diuretics. Patients taking digoxin should increase intake of fruits and vegetables containing potassium.
