What are the pharmacokinetics of digoxin?

What are the pharmacokinetics of digoxin?

What are the pharmacokinetics of digoxin?

The main route of elimination is renal excretion of digoxin, which is closely correlated with the glomerular filtration rate. In addition, some tubular secretion and perhaps tubular reabsorption occurs. Nearly all of the digoxin in the urine is excreted unchanged, with a small part as active metabolites.

How does digoxin work physiology?

Digoxin increases the force of contraction of the muscle of the heart by inhibiting the activity of an enzyme (ATPase) that controls movement of calcium, sodium, and potassium into heart muscle. Calcium controls the force of contraction.

What is the pharmacological class of digoxin?

Digoxin belongs to the class of medicines called digitalis glycosides. It is used to improve the strength and efficiency of the heart, or to control the rate and rhythm of the heartbeat.

What is the mechanism of action of digoxin in heart failure?

Mechanism of Action Digoxin induces an increase in intracellular sodium that will drive an influx of calcium in the heart and cause an increase in contractility. Cardiac output increases with a subsequent decrease in ventricular filling pressures.

What is action of digoxin?

Digoxin belongs to a class of medications called cardiac glycosides. It works by affecting certain minerals (sodium and potassium) inside heart cells. This reduces strain on the heart and helps it maintain a normal, steady, and strong heartbeat.

What are the therapeutic effects of digoxin?

Uses. Digoxin is used to treat heart failure,usually along with other medications.

  • Side Effects. Nausea,vomiting,headache,dizziness,loss of appetite,and diarrhea may occur.
  • Precautions.
  • Interactions.

    • What should the heart rate be before giving digoxin?

    Nausea,vomiting,fatigue

  • Irregularities in heart rate and rhythm
  • Decreased BP,pallor
  • Neurological changes – confusion,lethargic,visual disturbances,seizures
  • Anorexia,diarrhea

    • How does digoxin work on the heart?

    Dizziness.

  • Changes in mood and mental alertness,including confusion,depression and lost interest in usual activities.
  • Anxiety.
  • Nausea,vomiting and diarrhea.
  • Headache.
  • Rash.
  • Growth or enlargement of breast tissue in men (gynecomastia)
  • Weakness.

    • What drug class is digoxin?

    Digoxin may be taken with or without food.

  • Digoxin primarily is eliminated by the kidneys; therefore,the dose of digoxin should be reduced in patients with kidney dysfunction.
  • Digoxin blood levels are used for adjusting doses in order to avoid toxicity.
  • The usual starting dose is 0.0625-0.25 mg daily depending on age and kidney function.