Test your knowledge on atrial fibrillation and the risk of stroke * Atrial fibrillation is a condition that affects: the digestive system the knee the heart * Atrial fibrillation patients: all feel symptoms feel symptoms in 80% of the cases are all symptom-less * Atrial fibrillation can cause: a stroke skin cancer changes to the pupil's color * Atrial fibrillation can cause a stroke when: a clot formed in the heart reaches the brain a clot formed in the heart reaches the lungs a clot formed in the heart reaches a kindey * In atrial fibrillation a blood clot can form: in the heart because the blood is not flowing well in the stomach in the liver * Atrial fibrillation's treatment goals are: make the heart recover a regular beat avoid blood clots to prevent stroke make the heart recover a regular beat and avoid blood clots to prevent stroke * A blood clot is: an air bubble that forms in the blood formed by platelets, fibrin and red blood cells a build up of cholesterol * In a normal heart beat: atria and ventricles contract with a regular rhythm only the atria contract only the ventricles contract * During atrial fibrillation: the atria and the ventricles contract too slowly the ventricles don’t contract the atria quiver while the ventricles contract with an irregular rhythm * Atrial fibrillation is an important threat for: the legs the brain the teeth